1.
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Vítek, Karel
Abstrakt: Computational approach to structural or limit state assessment needs better knowledge of material qualities as one of the basic inputs. The methodology of deter [...]
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2.
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Abstrakt: A great intention is lately focused on Reinforcement Learning (RL) methods. The article is focused on improving model free RL method known as Q-Iearning algorit [...]
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3.
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Abstrakt: Příspěvek se zabývá napjatostně deformační analýzou degenerovaného páteřního prvku, přičemž degenerace může být způsobena jak v důsledku ú [...]
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4.
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Křen, J.
Abstrakt: The problem of the interaction between a liquid and flexible continuum occurs very often in practice. In the male urinary tract the interaction between urine an [...]
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5.
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Abstrakt: Článek prezentuje výsledky experimentálního výzkumu chování vlnovcové dvouvlnové pneumatické pružiny při kvazistatickém osovém a mimoosovém zat [...]
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6.
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Abstrakt: The small aerodynamic facility with variable gas density, concentration of the airhelium mixture and flow velocity is described. Next the procedure of mixing th [...]
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7.
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Abstrakt: Long-term observation of bridges supported by bearings made of synthetic materials reveals a steady horizontal deformation increase of these elements. This proc [...]
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8.
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Abstrakt: Dynamic effects of seismic excitation and of the steam line break in the weld of the steam pipe and the steam collector during an earthquake are analyzed. Gener [...]
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9.
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Abstrakt: Paper presents mathematical model of two-dimensional electrolyte flow in interelectrode gap and calculation results for form electrodes with development geometr [...]
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10.
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Pešek, Luděk
Abstrakt: Pro identifikace parametru slabych nelinearit disipacnich vrstev byly rozsireny stavajici numericke metody a odladeny numericke programy pro pripad nelinearniho [...]
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11.
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Polach, Pavel
Abstrakt: A front impact against a concrete wall at the driving speed of 5 kmlh is one of the tests which are used for the verification of properties of public transport [...]
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12.
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Polanský, Jiří
Abstrakt: Besides chemical factors, those of a physical nature are considered today as also being capable of influencing negatively the progress of arteriosclerosis, for [...]
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13.
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Abstrakt: Existence of the interface between regions with different elastic properties have a pronounced influence on the behaviour of cracks The aim of the present contr [...]
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14.
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Zapoměl, Jaroslav
Abstrakt: Rotors belong to the most frequently used components of machine devices. In a number of cases they are coupled with the stationary part through hydrodynamical b [...]
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15.
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This paper follows-up our paper which was published in IM 2004 proceedings. The problem of the target tracking by the rangefinder is complicated when the rangefinder – [...]
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16.
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This paper deals with investigation of contact pressure development in contact area between titanium cervical implant (Tibon) and cervical vertebrae. Material of bone tis [...]
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17.
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The article deals with development and validation of Finite Element model of bicycle protective helmet with static load. Static load of the model of bicycle protective he [...]
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18.
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Novotný, R.
The article deals with the presentation aspects of the stress and deformations invariants in the three dimensional space. It deduces the stress invariants and their chara [...]
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19.
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The paper deals with problems of buckling in resistors of electric rail vehicles. The resistors are objects in that the electric power is expended during dynamic braking [...]
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20.
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Equation of motion of non exciting suspended ambulance couch are shown in this paper. We can state the conditions of equilibrium location and the conditions of its stabil [...]
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21.
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For detection of mechanical properties of MACSTL-TWIN SCREW implant will be use a computational modelling and an experimental modelling. The computational modelling will [...]
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22.
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Linear two degrees of freedom aero-elastic system for modelling vibrations of human vocal folds was originally developed by which the physiological conditions for so-call [...]
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23.
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Abstrakt: In this paper the authors propose the use of generic elements as a viable tool for parametric model-based damage detection. The parameters gained by use of gene [...]
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24.
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Ferfecki, P.
For the purpose of efficient diagnostics of fault conditions the influence of transverse fatigue crack on dynamical behaviour of a rotor system supported by active magnet [...]
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25.
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Koudelka, P.
Now, the translation in Czech and National Annex of EC7-1 (EUROCODE 7 - Geotechnical design, Part 1: General rules) are made. The principal difference exists between inpu [...]
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26.
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The paper is devoted to fatigue crack propagation in layered materials. The influence of plasticity induced crack closure on threshold values for fatigue crack propagatio [...]
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27.
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The aim of this contribution is to investigate aggregation efficiencies when high (G= 260 s-1) and low (G= 60 s-1) intensity agitation is applied for a treatment of surfa [...]
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28.
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Blood – aortic wall interaction was investigated in a current work using the uncoupled method. The method is based on alternating, relatively independent solutions of t [...]
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29.
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Abstrakt: The paper describes methods of hard cutting spiral bevel and hypoid gears. From the G leason system TAN -TR U method and conventional generating methods using c [...]
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30.
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Stodola, J.
Monitoring of technical condition of machines (e.g. engines) based on used oil analysis is an urgent practice to optimize control and maintenance. Both perfect wear produ [...]
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31.
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According to recent publications, from 2005 to 2008 there were more than 13000 terrorist attacks around the world which took more than 73000 human lives. The attacks were [...]
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32.
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Squirrel cage induction motors are employed in various machines and means of transport mostly as traction motors. The usage of this type of motors in vehicles can be conn [...]
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33.
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Hubová, O.
The wind action on structures may be represented by peak velocity pressures, in conditions of strong wind, or by the basic stochastic descriptors of the velocity fluctuat [...]
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34.
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Under the consideration of the bi-material notch composed of two orthotropic materials the potential direction of the crack initiated from the notch tip is determined fro [...]
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35.
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Dehiscence of median sternotomy wounds due to excessive forces caused by high pressure within the chest during coughing can lead to breaking closures sternotomy. This rem [...]
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36.
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This work contains the study of turbulent particle-laden channel flow, in which the particles experience a drag force. The method used for simulation of the liquid phase [...]
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37.
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This paper is focused on creation of an algorithm for calculating an envelope boundary condition obtained from experimental measurements performed for calculation of surf [...]
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45.
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Jeebori, A.
Tube banks are widely used in crossflow heat exchangers. Usually, the methods for its design are the NTU or LMTD methods, while in this research the Entropy Generation Me [...]
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46.
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Kriváček, J.
The plates of thin-walled steel structures to be in nature imperfect may exhibit out-of-plane displacements (deflections) under in-plane compressive load. Such type of st [...]
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47.
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Abstrakt: This paper presents development oj polyuretan foam simulating model. The combination of pneumatic cylinders filled by ideal gass with polytropic change of stat [...]
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48.
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Abstrakt: Two relatively independent areas of the gearing science have been distinctively outlined and considerably progressed in the last decade. The "Theory of gearing" [...]
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49.
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Dobiáš, Ivan
Abstrakt: The S4P programme (Science for Practice) of the Engineering Academy of the Czech Republic (EACR) concentrates on new research knowledge transfer into industry a [...]
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50.
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Abstrakt: The control of motion a robot manipulator gripper and a mobile (locomotion) robot behaviour requires the solution of the direct and inverse kinematics and dynam [...]
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51.
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Holub, Rudolf
Abstrakt: Frequently, a manufacturer will have to demonstrate that a certain product has met a goal of certain reliability at a given time with a specific confidence. Oft [...]
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52.
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Abstrakt: The contribution is focused on design of multi-legged robot leg as an autonomous system. Leg is composed of the leg mechanism, 3 leg drives, sensor and control [...]
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53.
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Jirouš, F.
Abstrakt: It is shown that only a system with counter-current in- and outflow (U-type flow) can lead to an even distribution in branched systems. Calculations prove that [...]
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54.
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Kafka, Vratislav
Abstrakt: Inelastic macroscopic behavior of technical as well as biological materials is strongly related to their structures. Therefore, constitutive modeling of the res [...]
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55.
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Křiváková, Jarmila
Abstrakt: Článek je zaměřen na počítačové modelování stability válcových skořepin řešených dynamickou nelineární analýzou programovým souborem COSMOS/ [...]
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56.
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Abstrakt: The paper presents a determining of the real power characteristics of non axial loaded pneumatic spring, hydraulic damper, spring rubber stop-members and two-po [...]
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57.
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Abstrakt: The transverse-axial tubular system (TAT-system) of cardiac muscle is a structure that allows rapid propagation of excitation into the cell interior. As suggest [...]
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58.
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Abstrakt: The traditional method of motion description of heavy machines are differential equations. In this paper for the description of tractor motion was used the meth [...]
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59.
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Říman, Pavel
Abstrakt: The primary mechanism for traffic noise reduction in existing highways is trough the use of noise barriers. The most of present used methods calculating noise b [...]
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60.
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Rohan, E.
Abstrakt: The paper deals with the homogenization method in the context of modelling biological tissues which undergo large deformation. The updated Lagrangian scheme is [...]
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61.
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Abstrakt: The paper deals with the bone tissue modelling as a micropolar continuum. Isotropic and orthotropic constitutive relations were used for the description of the [...]
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62.
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Šklíba, Jan
Abstrakt: This paper presents a summary of the research, focused to the dynamic problems of the driver seat, performed at the Technical university of Liberec during the l [...]
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63.
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Abstrakt: EUCOR, a corundo-badelleyit material, which is not only resistant to wear but also to extremely high temperatures, is seldom discussed in literature. The solidi [...]
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64.
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Abstrakt: Finite element analysis was attempted to modeling microcracks and overall response of solid composites (two-dimensional problem) under compression. As a mathema [...]
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65.
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Kocanda, Lubomír
Abstrakt: Soft impact oscillator with one degree of freedom containing soft stop is considered. Ways of the system to a chaotic motion are dealt with. Various ways to thi [...]
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66.
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This paper presents some results of the thermal deformation analysis of screwed toothed rim. The loading was determined by thermal gradients and by prestressing of connec [...]
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67.
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Abstrakt: The long-term behaviour of a crystalline rock has been modelled as a viscoplastic problem. The Perzyna type of material models, which is based on socalled overs [...]
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68.
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This contribution deals with computational modelling of static and dynamic analysis of journal bearings. In this contribution a new theoretical approach to the modelling [...]
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69.
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The paper presents the latest results of modeling of the erosion effects of cavitation bubbles on the blades of a water pump. Cavitation erosion is caused by the collapse [...]
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70.
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Authors considered the possibility of FEA application realized in software ANSYS for durability estimation of parts of wedge gate valve. Use of ANSYS allows to carry out [...]
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71.
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The paper deals with the experimental investigation of operating parameters of solar air collectors, installed in an experimental building in Podoli u Brna. The collector [...]
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72.
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These problems were solved in past by Reynolds equation, which assumed a thin and a circular gap. A modification of Reynolds equation, a presumption of its derivation and [...]
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73.
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As in case of previous papers published on conference IM 2000, 2001, 2002 the influence of asymmetry at oscillating three-dimensional resiliently borne body, rigid plate, [...]
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74.
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A new proposition of a simulations methodology applicable to grain grinding is discussed in this article. This methodology represents a unified approach in which the esse [...]
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75.
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Bach, P.
The paper deals with stability conditions of milling machine tools. As instability a self-excited vibration development, called chatter, under certain cutting conditions [...]
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76.
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Trucks moving around the roads and bridges cause their wear and damage. The mechatronical solution can help by the usage of controlled variable suspension damper that lea [...]
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77.
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Cyclic tests with the maximum force in a cycle Fmax = 5,5 kN and the cycle asymmetry ratio R = F min / F max = 0, 1 were carried out on fiat specimens of 5mm in thickness [...]
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78.
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Abstrakt: The procedure based on a traditional genetic algorithm (GA) is demonstrated on the price optimization of a vibrating block foundation. Unbalanced rotating mass [...]
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79.
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Abstrakt: V přispěvku jsou předneseny nové poznatky o matematickém modelu nestacionárního proudění v rozvětvení tvaru T. Je zde naznačeno jeho odvození a jso [...]
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80.
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This paper deals with analytical formulation of dispersion curves for stress waves in a free (001)-cut cubic and orthotropic plate. The direction of wave propagation is a [...]
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81.
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Foundation of buildings in deep ditches under the ground water level highly elevated during floods is a serious problem. Cracking arising due to the combination of hydrat [...]
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82.
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Slender structures exposed to wind influences are subjected to a random component of the pressure generated by a fluctuation part of the wind velocity. The structure it [...]
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83.
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This contribution deals with computation of stiffness and damping coefficients of aerostatic bearings. Model of bearings is based on Reynolds equation for compressible m [...]
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84.
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The paper deals with development of a computational model describing oil expression from oil-containing seeds. The principles of compression in the rotating screw pressin [...]
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85.
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The paper is devoted to dynamical analysis of a railway vehicle motion along a direct waved railway. A mathematical model of this discrete multibody system that consists [...]
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86.
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Analysis of laminated plates under static and transient dynamic loading is presented by the meshless local Petrov-Galerkin (MLPG) method. ReissnerMindlin theory is used t [...]
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87.
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Outcomes of a numerical simulation of flow through an unbalanced control valve during the turbine's operational modes. A 2D as well as a 3D calculation study is considere [...]
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88.
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Donát, M.
The electromechanical interaction in rotating electric machines induces additional forces between the rotor and the stator. A simple electromechanical computational model [...]
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89.
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Gottvald, J.
In case of bucket wheel excavators (BWE) the digging forces are dominant sources of vibrations. The influence of digging forces on steel structures of upper part of BWE d [...]
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90.
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The main point of this research was to determine the practical and theoretical level of possibilities of the recycling gypsum binder and to characterize the recycling gyp [...]
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91.
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This contribution deals with reliability of railway wheels as influenced by the occurrence of impaired limiting material strength. Results are presented of material inves [...]
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92.
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This paper is focused on evaluation and comparison of air-air heat exchangers of plate type used for retrieving the heat from the waste air. The first part of this paper [...]
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93.
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In this paper is surveyed the influence of the perturbation using model RK4. The perturbation was induced by centrifugal force. The measurement was made to evaluate influ [...]
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94.
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A new method of blade design based on the previously determined meridional velocity field is introduced in this contribution. The aim of calculation is the spatial shape [...]
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95.
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Weirs belong to one of most common water structures. Various shapes of weirs are used at various conditions (e.g. emergency spillway, river weir, volumetric weir, etc.). [...]
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96.
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This paper is concerned with mathematical modeling of the imperfect bladed disk with friction elements, which are used to suppress blade vibration. These kinds of systems [...]
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116.
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117.
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Burša, Jiří
Abstrakt: The paper compares various types of cohesion tests used in testing of adhesive connection of two materials. The computational modelling using FEM confirms that [...]
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118.
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Čulík, Jan
Abstrakt: The topic of this paper is a computer simulation of treatment of children spine deformities with braces (orthosis). Orthopaedists in the Czech Republic use corr [...]
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119.
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Abstrakt: The aim of this contribution is to propose a new phenomenological model enabling description of non-monotonicity of shear-viscosity function for rheologically c [...]
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120.
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Dobiáš, Štěpán
Abstrakt: In this paper, the utilization of information systems in industrial practice will be discussed. Several kinds of information systems are used in works, but we f [...]
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121.
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Abstrakt: The integral concepts for calculation of the generalized stress intensity factor and elastic T stress are presented. Both the integrals are based on a validity [...]
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122.
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Abstrakt: Relations between crack opening displacement (CTOD) and other fracture mechanics parameters are of a great importance in fracture mechanics. The basic aim of t [...]
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123.
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Hynek, Pavel
Abstrakt: This paper describes three modelling technique for rub related phenomena in rotor systems and compares their suitability for numerical simulation. Numerical tes [...]
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124.
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Abstrakt: Two medium-term experiments with lateral pressure of flowing loose sand acting on a retaining wall were performed. The experiments showed some rather unexpected [...]
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125.
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Abstrakt: The dimensioning of the metal-diaphragm depends on the maximum measured pressure and on necessary preload. Classic methods of elasticity were used to get some p [...]
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126.
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127.
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Abstrakt: A stability criterion based on generalized strain energy density factor for a crack terminating at the bi-material inteiface is suggested. The strain energy den [...]
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128.
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Abstrakt: Method and results of numerical simulation of the elastohydrodynamic (EHD) lubrication of the profiled roller of finite length are presented. Peculiarities of t [...]
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129.
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Abstrakt: In all power plants (classical and nuclear) are used safety relief valves. After opening of this ones the mass of fluid (gas or steam) begin to move with very h [...]
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130.
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Abstrakt: The excited one degree of freedom mechanical system with soft impacts, characterised by triangle hysteresis loop, is investigated using numerical simulation. Sm [...]
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131.
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Abstrakt: The internal combustion engine development process requires CAE models which deliver results for the concept phase at very early stage and which can be further [...]
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132.
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Abstrakt: To determine heat transfer coefficients on a surface, an inverse task is used that requires either measured surface temperature history or, more often, measured [...]
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133.
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Abstrakt: Having new, very powerful tool for stress analysis in form of modem simulation methods as FEM we are able to determine stress and strain state in the examind st [...]
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134.
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Ballo, I.
In the paper the properties of active and semi -active suspensions of heavy goods vehicle are compared. The criteria of comparison were the RMS sprung mass vertical accel [...]
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135.
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An important phase of the bolt production is a bolt head trimming. It is a very fast, complicated process including material failure. For this reasons explicit solver LS- [...]
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136.
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Krejčí, P.
This paper presents design of intelligent sensor for robotic leg of quadruped experimental robot. Information about contact load as well as direction and magnitude of con [...]
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137.
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The hypothesis was stated, that the relaxation oscillation emerge in the surface layers of wheel and rail, by the accelerating and braking period of the rail vehicles. Th [...]
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138.
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Singular cases - singularities of the robot are defined as positions in which the robot loses kinematic definiteness. The loss appears in both direct and inverse kinemati [...]
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139.
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The contribution deals with a complicated problem of fatigue damage of structure parts, which are loaded by a combination of random forces in tension-pressure and moments [...]
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140.
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One of the main modes of bed load transport is saltation when particles hop up from the bed and follow ballistic-like trajectories. Mathematical models of saltation are m [...]
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141.
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The condition of stability of steady flow in rotationally symmetrical area is presented in the paper. The governing equation is Navier-Stokes and the continuity equation [...]
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142.
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This article describes performing of the stress - strain analysis of the physiological hip joint with the effect of uncertain input material characteristics which are ent [...]
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143.
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Semi-solid or mushy state processing permits a material to partially solidify before shape making operations. The understanding of material behaviour in the mushy state i [...]
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144.
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In relation to previous solution of non-stationary state of stress in elastic plate excited by singular force, the solution of transversal impact an elastic thin rod on t [...]
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145.
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The conditional analysis of the skin-friction was applied on time records made in transitional boundary layers originating under boundary conditions prescribed for the ER [...]
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146.
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Červ, J.
In the paper are studied some conditions which are necessary for the existence of Rayleigh (edge) waves in an orthotropic elastic half-plane. A non-zero angle ween body a [...]
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147.
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This paper describes a sensitivity analysis and spectral tuning method of selected design parameters of the large rotating systems. The method is based on the system deco [...]
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148.
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Recently, several collapses of assembled floors with large clay units took place in the Czech Republic. The failures are occurring in certain period after finishing of co [...]
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149.
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Procházka, P.
Certain numerical methods are direct impact of classical variational principles. The finite element method is a typical example of such approaches. Some problems, particu [...]
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150.
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Poživilová, A.
Hyperelastic material model based on the logarithmic description is implemented in the finite element code. Procedure for the calculation of all the necessary quantities [...]
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151.
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Nánási, T.
The list of all possible boundary conditions corresponding to particular differential operator is much greater than usually presented in open literature. Gallery of vario [...]
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152.
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Sandwich construction elements, i.e. elements formed by two skins and core, excel in high ratio of bending stiffness to weight of construction. This complex is designed i [...]
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153.
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The tilting pad bearings are very often applied in high speed rotating machines. The exact solution of bearing characteristics, including the motion of tilting pads, is v [...]
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154.
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The basic fracture properties of cement-based composite are ascertained on the basis of test evaluations of the specimens in suitable test configurations. Three-point ben [...]
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155.
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Friction influence in analysis of a single degree of freedom oscillatory system (SDOF) is either neglected or accounted for by analytical methods, assuming steady state h [...]
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156.
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The authors are engaged in development of adaptive analysis of RC frames using the microplane model. The utilised finite element mesh is compound of 1D and 3D elements. [...]
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157.
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The article deals with contact stress analysis of pelvic bone after implantation of cemented acetabular component with imperfections of cemented layer. 3D high resolution [...]
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158.
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Zapoměl, J.
The rotor systems consit of two principal components, of a rotor and of a stationary part, and the fluid film bearings are often used as coupling elements. As the clearan [...]
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159.
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This paper is concentrated on modelling of friction effects in bladed disk of steam turbine, which are realized by means of friction elements placed between blades shroud [...]
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160.
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Total knee and hip implants are usually designed for the static load of standing man, but the static load is not extreme. The top of research is to search extreme values [...]
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161.
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Čečrdle, J.
The paper deals with the aircraft landing shock aeroelastic response analysis. The analysis was performed as a part of the aircraft certification in order to fulfill the [...]
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162.
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163.
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This article is concerned with comparison of velocity field size depending on size of the eccentricity in leakage joints of centrifugal pumps. Eccentricity is created by [...]
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164.
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The presented paper describes the process of determination of eigen shapes and eigen frequencies of the structure with non-linear joint. The presented method uses three d [...]
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165.
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Flexural vibrations of rotating disk contain forward and backward traveling waves can be excited at certain speed of rotating disk also by a standing constant single poin [...]
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166.
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The paper deals with the modeling and evaluation of stability conditions of the balanced rotating system with rigid discs supported on two anisotropic hydrodynamic bearin [...]
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167.
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Sobotka, J.
The mathematical model of a thin cylindrical shell according to Timoshenko and Love bending theory contains derivatives of generalized internal forces and deformation com [...]
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168.
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The presented paper is focused on the stress – strain analysis of the restored tooth. From the reason of general geometry, complex material properties and boundary cond [...]
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169.
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197.
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Abstrakt: The paper deals with an open channel flow around model of a bridge when the water depth is higher than height of the bridge opening. Both the pressured flow thr [...]
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198.
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Iwaszko, Jerzy
Abstrakt: The formulas for calculating the air flow rate in pneumatic components given in [1 , 2, 3 J were compared. Flow rating parameters, sonic conductance C and criti [...]
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199.
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Abstrakt: The main goal of this paper is to study how non-linearities of components and subjective ride comfort perception quantity assessment influence the ride comfort, [...]
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200.
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Švancara, Pavel
Abstrakt: Correct determination of individual SEA parameters is necessary to build a reliable SEA model. Especially for subsystems with complex geometry and material may [...]
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201.
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Abstrakt: After mixing kaolin with water attractive and repulsive forces between kaolin particles initiate process of coagulation and peptisation, respectively. The coagu [...]
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202.
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Abstrakt: The stepping stone in evaluating effective elastic properties of woven composite tubes is an accurate geometrical description of the composite tube on meso-scal [...]
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203.
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Brož, P.
Stochastic theory for fracture of concrete materials is applied. The fracture process can be described not only under monotonically increasing load but also under time-de [...]
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204.
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Gajdošík, J.
This work is concerned with the description of the process of retrieving color images from real composite systems together with their transformation into binary images. T [...]
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205.
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The contribution deals with an application of discontinuous Galerkin method to free surface flow calculation. Both the super- and sub-critical flows are studied for stead [...]
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206.
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207.
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Štyl, P.
The paper describes development and design of slitting shear of wide plate mill. For good understanding of shear behavior, distribution of forces and torques, mathematica [...]
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208.
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Failure of a high ductile specimen usually precedes a decrease of the loading force (material softening) under the condition of displacement control in the monotonic load [...]
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209.
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210.
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The leg design is described in the contribution. Some possibilities of leg control and requirements related to both sensor system of the leg and complete robot are assign [...]
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211.
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It has been found there is a probability of a sudden break of all 20 bolts fastening primary header cover. This cover separates the medium of the primary circuit header f [...]
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212.
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213.
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The possibility of localising and quantifying a damage in a vibrating structure based on measured vibration amplitudes of the first harmonic in some locations of the stru [...]
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214.
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Votrubec, R.
This Paper deals with an identification of a damper with magnetoreological fluid. A global characteristic is used for description of damping force, that depends on veloci [...]
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215.
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The paper presents the description of behavior of selected soils subjected to relatively high hydraulic gradients based on experimental results. The influences of all maj [...]
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216.
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Drobný, V.
Reference model means simplified mathematical vehicle model which describes vehicle lateral dynamics. The output of the reference model produces the most optimal trajecto [...]
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217.
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The beam with an axial force is coupled by an elastic layer of Winkler type with the pretensiled string. It is subjected to a row of moving forces. The theoretical model [...]
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218.
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The paper describes results of experiments with rotating spherical particles moving quasi-steadily in the calm water. The motion of the particles was recorded by a digita [...]
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219.
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This paper describes some practical results achieved with the usage of the floating principle in machine tools design. It is linked to works presented at the IM2004 confe [...]
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220.
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This paper summarises the preliminary results concerning an influence of the agitation conditions on the aggregation processes. The properties of formed aggregates affect [...]
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221.
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The paper deals with mathematical modelling of vibration and modal analysis of an individual wheelset drive with a hollow graduated shaft. The method is based on the syst [...]
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222.
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The principle of a steam turbine balanced control system is presented here. The dynamic stress measurement method in parts of valves on its models in the aerodynamic wind [...]
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223.
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ŠKODA VÝZKUM s.r.o. cooperated at the development of the NEOPLAN RQ low-floor bus intended for the Boston city (the United States). Multibody models and finite element [...]
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224.
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The physical model of two cylinder hydraulic damper is composed from several groups of equations, which describe: a) the dynamic equilibrium of the forces loading the val [...]
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225.
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226.
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The article describes design of vehicle track computation model and basic testing step of dynamic loading simulation of the track. The model is built for computational si [...]
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227.
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Changes of mechanical properties, namely of modulus of elasticity, often play a role of damage accumulation indicators in the framework of fatigue behaviour of composite [...]
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228.
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The contribution deals with the experimental and numerical modelling of supercritical turbulent flow in an open channel with an inclined backward-facing step on its botto [...]
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229.
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230.
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This article deals with the stress analysis of the Burch-Schneider (BS) cage as applied to a hip joint. Due to the complex geometry of the solved problem, material proper [...]
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231.
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There are mechatronic applications, where a slender beam or plate is subjected to static magnetic force generated by an electromagnetic actuator consisting of a solenoid [...]
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232.
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Selected approximation curves of mechanical-fracture parameter values − modulus of elasticity, effective fracture toughness, specific fracture energy, compressive cube [...]
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233.
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A stage with impulse blading on a drum rotor is considered. Steam leakage through the shroud and shaft sealing has been determined by means of a numerical simulation. The [...]
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234.
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In our contribution we will show how the Trefftz Radial Basis Functions (TRBF), i.e. RBF satisfying the governing equations can be used to increase the efficiency of mode [...]
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Abstrakt: One of the main requests in engineering practice is to have an effective design procedure of a reinforced concrete continuous beam. This task is a multidimensio [...]
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271.
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Morávka, Štefan
Abstrakt: The paper follows with the preceding works dealing with the research of the tranzient elastic waves propagation in bodies with basic constructional forms (i.e. [...]
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272.
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Abstrakt: This paper describes a part of theoretical and experimental research dealing with the problem of the aeroelastic instability onset of slender rectangular beams [...]
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273.
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Abstrakt: The impact motion of rigid rotor supported on passive magnetic bearings is studied. Impacts on passive magnetic bearings are investigated. Impacts occur in reta [...]
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274.
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Abstrakt: The presented paper deals with procedure created for quality and reliability evaluation of ductile fracture criteria group. The base for criteria verification i [...]
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275.
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Abstrakt: As in case of previous papers published on conference IM 2000, 2001 the influence of asymmetry at oscillating three-dimensional resiliently beared body, rigid p [...]
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276.
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277.
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In the paper, the relationship for the energy of undamped dynamic system forced by general force impulse and its steady response are descibed. The acquired relations need [...]
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278.
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In this work there has been made an attempt to evaluate the influence of the base surface vibrations on the rotor balancing. Tests were made on a laboratory stand where a [...]
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279.
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Pohl, K.
The objective of this paper describe a non-linear analysis of reinforced concrete frame structures and assignment its response to seismic load. We observe the change of n [...]
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280.
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Trávníček, Z.
Vortex shedding from a bluff body is a classical problem as well as an exciting challenge for fluid mechanics. Since the time of Prof. Strouhal at the end of the 19th cen [...]
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281.
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The muscle forces in human beings are difficult to exactly determine, because many muscles act cooperatively. Consequently, the model of a backpropagation neural network [...]
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282.
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One possibility how to decrease lateral vibration of rotors excited by imbalance of the rotating parts is to couple the shaft with the stationary part through squeeze fil [...]
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283.
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284.
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This paper presents the consideration on the change judgement of J integral and Q parameter as the base parameters of two-parameter elastic-plastic fracture mechanics. An [...]
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285.
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The contribution deals with the straight sandwich bar element derived by new nonincremental full geometric nonlinear approach. We assume a twonode straight sandwich compo [...]
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286.
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Composite materials consist of a composite matrix and a reinforcement usually created by fibres. The overall properties of a composite material strongly depend on intera [...]
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287.
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Malášek, J.
State of stress identification consists of these parts – of miniaturised pressure sensors in matrix arrangement and of a special strain-gauge bridge – this is a compl [...]
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288.
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289.
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Sobotka, J.
The classical mathematical model of beam-columns contains derivatives of functions for the bending moment, the shear force, the axial force, the slope, and the deflection [...]
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290.
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291.
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292.
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293.
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Gronát, P.
In this paper, a correlation method for direct vorticity computation of the fluid velocity field is introduced. The correlation method allows an affine transformation of [...]
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294.
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The achievable force at the end of human forearm depends on the forearm position. The actual value of this force is one of the most important variables affecting the desi [...]
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295.
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296.
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The paper is focused on analysis of changes of eigenfrequencies due to local damage in beam buckling problem. The aim is determination of suitable initial parameters for [...]
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297.
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The drag force acting on a spheroid moving perpendicularly to its axis of rotation in water was studied experimentally. Along the spheroid axis, which is normal to its ax [...]
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298.
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Flow behavior of coarse-grained slurry depends generally on particle size, shape, density and concentration. The present paper describes the results of experimental inves [...]
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325.
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Peterka, František
Abstrakt: Dynamic properties of the mechanical system with one degree of freedom containing soft stop are investigated. Dynamical impact model respects the non-linearity [...]
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326.
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Abstrakt: The paper deals with evaluation and analyzing of stresses in rubber cylindrical specimen which was twisted up to large deformation. Ogden hyperelastic nonlinear [...]
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327.
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Abstrakt: In relation to previous solution of non-stationary state of stress in elastic plate excited by singular force, the solution of transversa le impact an elastic t [...]
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328.
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329.
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Pečínka, L.
Analysis of the dynamic response of the beam under moving load and axial periodic force and with constant damping result in well known solution of Mathieu equation. In fa [...]
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330.
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The testing pump with one water-pump impeller is described in this contribution. During rotation it is possible to analyse the forces and moments which impact the runner. [...]
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331.
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Turbulent flow in a curved channel of the squared cross-section was numerically simulated using the CFX-TASCflow software. Besides the standard k-el and Menter´s k- mode [...]
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332.
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This paper deals with the methodology of the modelling of rotating shafts with flexible disks. Rotating shafts are modelled as one dimensional continuum on the basis of [...]
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333.
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334.
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The paper describes the results of experiments with a rotating golf ball moving quasi-steadily in calm water. The motion of the ball was recorded on a digital video camer [...]
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335.
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336.
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The paper deals with the force-torque control for industrial robots for various types of applications such as grinding, drilling, automatic assembly or other applications [...]
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337.
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Checking analyses of large steel tanks with fluid have been carried out within the frame of the project of completion of Units 3 a 4 of the nuclear power plant Mochovce. [...]
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338.
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This paper deals with pore size distribution assessment in trabecular structure of human proximal femur. Two different approaches for estimation of histograms of pore siz [...]
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350.
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Experimental line for measuring velocity of the pulse wave in vessels (aorta) using invasive or noninvasive methods is designed in the Laboratory of human biomechanics, C [...]
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351.
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The Magnus force coefficient was determined from comparison of theoretical and experimental trajectory of rotating spherical particle falling in calm water. Theoretical t [...]
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352.
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353.
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Technique and results of measurement of flow parameters in the channel model of rectangular cross-section with a negative bottom step are presented. The flow was alternat [...]
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354.
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Our recent experiments on filament-wound composite tube showed that unidirectional and cross filament-wound composite tubes had non-linear behaviour even under axial load [...]
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355.
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The paper presents the modal synthesis method for a mathematical modelling of rotating bladed disk vibration. The standard finite element software does not allow to cons [...]
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356.
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Schuster, M.
This paper is a short overview of engineering approach to study rail vehicles aerodynamics and aerodynamic interaction between the trains and vicinity infrastructures. Sh [...]
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357.
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Sobotka, J.
This article presents Ph.D. thesis dealing with applications of generalized functions (distributions) to analytical calculations of thin-walled beams with discontinuities [...]
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358.
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359.
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372.
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Abstrakt: Commutator is an important part of direct-current electromotor, the function of which is to swith single windigs of its rotor. Presented paper is focused on imp [...]
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373.
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Bach, P.
The paper presents firstly a review of the most important method of stability calculation for machining process. Based on this, the evaluation of stable depth limits is p [...]
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374.
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The paper deals with determination of surface roughness influence on spray cooling intensity. The questions of the surface quality on the heat transfer and the Leidenfros [...]
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375.
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The paper presents the results of preliminary studies into thermal properties of controlled axi-symmetric nozzle. Downstream flow impinged on the 3.2 mm thick wall, with [...]
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376.
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The contribution deals with a mathematical model of bending vibrations of a slender flexible rotor, excited by unbalance when passing the critical speed. The analysed rot [...]
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377.
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378.
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The contribution deals with the modelling of the rolling contact between the wheel set of the railway vehicle and the curved railway and subsequently with the lateral mot [...]
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379.
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This paper is aimed at reducing vibrations of bladed disk in particular operating state. The damping element used in this contribution is realized by a strap with isoscel [...]
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380.
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381.
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382.
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383.
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384.
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385.
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386.
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387.
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388.
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Omes, Jiří
Abstrakt: Recently there is a large development and exploitation of hydraulic presses. Development of these presses leads to endeavour after exploitation of pulsating for [...]
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389.
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Abstrakt: Filament winding is an important manufacturing technology of composite. In general, filament wound composite elements can be taken as laminated composite, but d [...]
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390.
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This paper presents discrete optimization of reinforced concrete structures based on an efficient combination of deterministic and stochastic optimization strategies. The [...]
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391.
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392.
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Čulík, J.
The top of article is mechanic model of hand power grip. The algorithm of calculation of tendon and finger joint forces and finger stress state is presented. The results [...]
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393.
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Mudrik, J.
Contribution deals with machine aggregates with locking elements (worm gearings and cross-axis helical gearings). Vibrational processes in aggregates with locking mechani [...]
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394.
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Results of experiments on fully developed turbulent boundary layer are presented. The boundary layer was generated on a smooth flat wall forming one side of the channel o [...]
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395.
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The article is a contribution to numerical simulations of pitting arise phenomena on the gear teeth. The basic assumption of the presented simulations was that pitting (p [...]
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396.
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397.
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398.
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Zapoměl, Jaroslav
Abstrakt: Properties of fluid film bearings are significantly influenced by the shape of the cross section of the holes in the bearing shells. In computational models the [...]
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399.
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Abstrakt: A parametric optimization of the gearbox in steady vibration excited by gear kinematics transmission errors is presented. The process is based on the gearbox de [...]
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400.
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Lepš, M.
This paper presents a discrete optimization of reinforced concrete structures based on an efficient combination of deterministic and stochastic optimization strategies. T [...]
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401.
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Wind excited vibrations of slender structures such as towers, masts or certain types of bridges can be reduced using passive or active vibration absorbers. If there is av [...]
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402.
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Jandora, R.
Problem of wheelset rolling on rails is commonly solved problem of engineering practice. Only ideal geometry of the wheelset is used in majority of studies to simulate it [...]
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403.
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Pohanka, M.
Direct measurements of boundary conditions in application such as descaling or hot rolling in steel industry or in experiments that simulates these processes are impossib [...]
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404.
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Machine parts with non-conformal contact surfaces frequently operate in elastohydrodynamic or mixed regime of lubrication. In surroundings of asperities significant chang [...]
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405.
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406.
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A new experimental set-up and measuring methods for the investigation of a channel flow with a backward-facing step on one wall are described. The rectangular cross secti [...]
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407.
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A qualitative analysis of influence of cross-flow shear on its interaction with a jet emanating perpendicularly from the wall is presented. The linear shear flow was gene [...]
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408.
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Descaling of hot rolled plates is typical application for high pressure flat jet nozzles. Row of nozzles with overlapping area at direction of moving hot plate is usually [...]
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409.
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Wind excited vibrations of slender structures such as towers, masts or certain types of bridges can be reduced using passive or active vibration absorbers. If there is av [...]
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410.
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Bubák, A.
This paper contains the analysis of a grinding machnine‘s feed drives focused on investigation of kinematic conditions required to grinding of workpieces with non-circu [...]
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411.
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The article deals with measurement of flow parameters in defined 90° bend profiles of square constant cross section and it´s linking upstream and downstream straight ax [...]
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412.
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The steel hot rolling process is inseparably connected to the oxidation of a rolled material at increased temperatures. Hydraulic descaling of rolled material is a part o [...]
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413.
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An investigation of the vertical vibration of the 3D vehicle model with asymmetry suspension, under damping and mass distribution at vehicle crossing over a system of the [...]
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414.
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The cable–stayed bridges are usually built for long span and are subjected to dead and moving loads, seismic motions of supports to wind forces, temperature and many ot [...]
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415.
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The paper contains the preliminary results of the grant project "Non-homogeneities of railway track as an aspect of track quality". The special device for measuring the v [...]
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416.
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In several newly built or modernised strip rolling mills in the Czech Republic, defects leading to products of low quality or product wasting have appeared. The article e [...]
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417.
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The cooling intensity of working rolls is very important in industrial applications. The durability of these rolls largely depends on proper cooling. In the case that the [...]
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418.
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Kabeláč, J.
In this paper a method for determination of shear stress distribution over arbitrary cross section is described. Cross section is loaded by any combination of shear and t [...]
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419.
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420.
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421.
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422.
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423.
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The paper is devoted to the analysis of the contact stresses and contact fatigue, especially at the rolls of rolling mils and railway wheels. The experimental and analyti [...]
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424.
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Daněk, V.
The stability of the asymmetric flight regimes, where the couplings between longitudinal and lateral aerodynamic characteristics are significantly influencing each other, [...]
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425.
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Učeň, O.
The contribution deals with problems of the creation of a mathematical model for centring the position of a ring in the course of rolling the ring. Ring centring is ensur [...]
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426.
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The paper deals with the evaluation and surface quality improvement of sheets
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427.
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428.
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The paper is devoted to the practical applications of methods of experimental mechanics to the specific problems at product of steel strips. The use of two methods of exp [...]
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429.
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The paper deals with cooling of grooved roll. The aim is to find optimal spray parameters, specify nozzle type, geometrical configuration and feeding pressure to elongate [...]
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430.
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