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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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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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7.
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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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8.
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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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9.
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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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10.
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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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11.
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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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12.
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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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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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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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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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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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17.
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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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18.
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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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19.
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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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20.
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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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21.
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Soldát, Jaroslav
Abstrakt: This work aims to reduce the thermal errors of the machining centres by indirect compensation methods. Thermal effects can form more than 70% to the overall dis [...]
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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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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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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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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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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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27.
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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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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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33.
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Instable behaviour both of the road and tram bridge at the Prague “Chotkova road” up to Klárov and the rock mass around has been monitored long time yet. The movemen [...]
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34.
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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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35.
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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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The paper deals with practical experience with measurement of acoustic power of the model - annular plate – while using plate absorptive dampers of the same area dimens [...]
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37.
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In this paper, an approach to dynamic analysis based on the fuzzy set theory is presented as a alternative to the classical stochastic dynamic analysis. The material para [...]
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38.
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The measurement of lateral deformation of solidifying concrete founds its application in many concrete technology fields. In this article, we present a method of using a [...]
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39.
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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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40.
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The paper is concerned with the verification analysis of the wind and technical seismicity response of a power plant stack structure. During two weeks the actual history [...]
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41.
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Socha, J.
The contribution deals with the mathematical modelling in the field of vehicle directional behaviour. The complex model of the bus has been created to analyse its directi [...]
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42.
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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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43.
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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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44.
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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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45.
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This contribution deals with proposal of the method for strain gauge measurements of rubber patterns under dynamic loading. As deform elements the silicon strain gauges w [...]
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46.
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The endeavour to use the changes of dynamic characteristics for the determination of damage or other imperfections of structures is not new. The rudimentary application o [...]
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47.
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Hole drilling method is a total numerical simulation of tension or bending loading of two types of beam specimens. The FEM model of the special drilling strain gauge rose [...]
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48.
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Long bone fractures can be healed using external fixators - devices that stiffly fix fracture fragments using parallel to the bone, attached with pins frame. This method [...]
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49.
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At the loudspeaker system designing, especially for bass zone, many things have be taken to account. First it is loudspeaker, secondary loudspeaker’s baffle board. For [...]
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50.
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Král, J.
Repeated cold front transitions in January 2007 in the Czech Republic were accompanied by occurrences of strong winds. Before the strongest one, accelerometers and a reco [...]
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51.
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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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52.
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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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53.
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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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54.
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Rozehnal, D.
This paper describes nonstacionary measurement of the airfoil aerodynamic characteristics at low speed wind tunnel on the University of Defence Brno. First part introduce [...]
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55.
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Experimental investigation of profile and secondary losses is presented here. The loss coefficients of different types of blade cascades are evaluated, the efficiency of [...]
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56.
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At the present time mainly FEM is used for numerical modelling of composite layered solids and structures. Using FEM, a significant amount of research has been devoted t [...]
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57.
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Engineering structures subjected to dynamic loading are often equipped with special devices proposed to suppress adverse motion. However, these installations are often d [...]
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58.
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The paper is focused on definition and application of the simple bending fracture model suitable for precision approximation of measured load–deflection diagrams from [...]
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59.
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The paper deals with mathematical modelling of vibration and modal analysis of a four-axle locomotive with two bogie. Each bogie has two individual wheelset drives. The m [...]
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60.
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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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61.
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This paper deals with energy harvesting principles, current and future applications of these devices. The paper critically evaluates opportunity of such power supplies fo [...]
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62.
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This paper briefly summarizes basic facts about fretting fatigue phenomena. It discusses the method of fretting fatigue measurement and partial slip estimation. It furthe [...]
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63.
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The paper is focused on comparison of numerical solution and experimental work of the flow field near model of hump. The hump is located in closed measurement area of Eif [...]
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64.
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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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65.
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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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66.
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The article describes results of durability test of a magnetorheological fluid (MRF) which was carried out in a custom design rheometer. The rheometer design allows measu [...]
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67.
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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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68.
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Presented paper deals with Concurrent Mapping and Localization as a method to build the local map for the autonomous mobile robot. Building accurate local map is necessar [...]
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69.
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Vítek, K.
The idea of the presented numerical simulation technique corresponds to the E 837 standard concepts but is more universal. It transforms the strains, arising during the h [...]
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70.
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The vibration amplitude of rotors excited by imbalance can be significantly reduced if damping devices are inserted between the rotor and its stationary part. To achieve [...]
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Salt crystallization induces deterioration phenomena to masonry materials especially under favorable conditions which depend on a triple-fold system of factors: the salts [...]
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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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92.
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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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93.
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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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94.
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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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95.
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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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96.
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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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97.
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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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98.
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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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99.
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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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100.
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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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101.
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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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102.
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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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103.
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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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104.
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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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105.
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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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106.
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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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107.
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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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108.
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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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109.
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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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110.
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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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111.
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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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112.
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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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113.
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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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114.
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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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115.
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116.
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Current active vibration suppression systems usually consist of piezoelectric actuators bonded to the surface or embedded within the structure. In most of these structure [...]
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117.
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One of the possibility, how to reduce amplitude of transversal vibration of rotors is to put together their rotating and no-rotating part by the squeeze film damper. This [...]
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118.
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Tůma, J.
The paper deals with the problem of angular vibration measurements. The source of information about angular vibrations is an incremental rotary encoder producing a string [...]
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119.
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As in case of previous papers published on conference IM 2000, 2003 the influence of asymmetry at oscillating three-dimensional resiliently beared body, rigid plate, forc [...]
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120.
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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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121.
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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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122.
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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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123.
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The paper describes the method of acoustical emissions measurement and evaluation on one of the typical machinery equipment - on gearboxes. Acoustical measurements were [...]
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124.
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One of the possibility , how to reduce amplitude of transversal vibration of rotors is to put together their rotating and no-rotating part by the squeeze film dampers. In [...]
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125.
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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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126.
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The dynamic properties of rotor supported on passive magnetic bearings is investigated by means of numerical solution and by measurement on the prototype of experimental [...]
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127.
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Kalous, J.
The 3rd generation mobile power sets operate at variable speed of the primary injection engine - generator aggregate dependent on their current loading. It results in rel [...]
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128.
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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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129.
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This paper presents the optical Digital Image Correlation method for in-plane displacement field measurements. This method is based on tracing random structures, which ar [...]
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130.
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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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131.
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An analytical solution is derived from an approximation of the 2D thin plate model. At first approach the model is described by Kirchhoff and Rayleigh model, then by Timo [...]
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132.
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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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133.
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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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134.
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The paper describes effects of end wall shaping in guide blades on steam turbine stage efficiency. CFD and measurement of straight blade cascades in a wind tunnel were pe [...]
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135.
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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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136.
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This article deals with three different factors which can influence the accuracy of the stress-strain data of elastomers measured with a biaxial testing rig. In terms of [...]
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137.
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The paper presents experimental results of the optical measurements of flow field around a fluttering NACA0015 profile elastically supported with two degrees of freedom i [...]
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138.
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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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139.
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This paper deals with the development of process for finding the optimal number and location of piezoceramic actuators and sensors to suppress the vibration of 2D systems [...]
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140.
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Kadlec, M.
Polymer composite panels are widely used in aeronautic and aerospace structures due to their high strength vs. weight ratio. The objective of this study is to determine m [...]
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141.
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The following article presents the results of analysis of slender bridge structure to dynamic loads induced by movement of people. Further is emphasized the importance of [...]
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142.
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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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143.
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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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144.
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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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145.
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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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146.
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Valášek, R.
The article deals with the tuning of shock absorbers for trucks on a vehicle, and with data collection for later laboratory testing. The used measuring technology is desc [...]
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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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180.
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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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181.
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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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182.
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183.
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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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184.
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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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185.
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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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186.
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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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187.
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188.
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The contents of the paper is a comparison models of vibration of the cantilever beam with the backstop. The beam model is solved by analytical method and also by using fi [...]
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189.
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Frequency modal and damping characteristics of an aeroelastic model designed for experiments in the wind tunnel are studied. Based on the experimental modal analysis the [...]
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190.
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In this paper transfer of vibration from motor to the bottom group of rotary drier is analyzed in the ADAMS/Vibration module environment. Excitation from unbalanced motor [...]
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191.
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Experimental equipment for simultaneous dynamic and optical measurements on a vibrating profile with two degrees of freedom was designed and realized. One degree of freed [...]
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192.
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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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193.
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The "Sněžka" Reconnaissance and Observation System is the special military design of the elevating platform truck. The authors of this paper took part in the experiment [...]
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194.
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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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195.
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Švancara, P.
Statistical Energy Analysis (SEA) is suitable method for analysis of sound and vibration in high-frequency range, but to build a reliable SEA model is necessary correctly [...]
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196.
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The paper the synthesis of the receptance by using the block diagrams. This method has some advantages. Each sub-system is described by its receptance and occurs in the [...]
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197.
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During the past decade, there has been a tremendous interest in the use of piezoelectric sensors and actuators for structural control applications. Some of the attributes [...]
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198.
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To a basic one-mass self-excited system a tuned absorber is attached the motion of which is influenced by soft impacts. The self-excitation is considered as of van der Po [...]
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199.
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The gable wall standing over the entrance into a neo-gothic church and fixed on both sides of its base into towers, swayed with well-visible amplitudes out of its plane i [...]
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200.
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The energy conjugate measures of stress and strain enter any constitutive relation for the material behaviour description. There are many strain measures in common use, s [...]
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201.
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The contribution presents numerical as well as experimental investigations of laminar and turbulent pulsating flow in an initial part of a rigid pipe. The simulations wer [...]
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202.
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The paper describes the way how the method of redundant measurements used for calibration of redundant parallel kinematical structures within the machine tool operation i [...]
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203.
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Král, J.
A long-term measurement of the wind response of the first building started in 2007and of the second building in 2009. The response monitoring is automatic and continues. [...]
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204.
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Now a day, many types of seat used in working machines are constructed for vibroizolation in vertical direction. Seat vibrations in longitudinal and lateral directions ar [...]
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205.
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206.
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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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207.
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There are several measures which can be used to predict, prevent and resolve the problems of liveliness in footbridges. The Frequency tuning means avoiding the critical f [...]
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208.
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The paper describes the influence of water/gypsum ratio to the dynamic modulus of elasticity of dental gypsum. Commercially available dental gypsum Interdent® (with comp [...]
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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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245.
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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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246.
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Abstrakt: Vibrations of VVER 1000 pipeline. This contribution explains the causes of highfrequency pipeline vibrations between regulation valves and 1000 MW turbine body [...]
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247.
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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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248.
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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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249.
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Abstrakt: This contribution deals with the functional description and initial setting of the Reactor Vibration Monitoring System (RVMS) that is supplied as a part of the [...]
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250.
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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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251.
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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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252.
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The paper deals with the comparison and assessment different conception of a vibration microgenerator construction. The vibration microgenerator is device that generates [...]
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253.
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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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254.
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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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255.
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The paper describes a new method of analysis of the non-stationary response of a bridge model subjected to the wind load. The analysis is based on the decomposition of th [...]
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256.
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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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257.
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The article reports on development of experimental procedures used for evaluation of mechanical properties of cancellous bone using small samples of cylindrical shape. Bo [...]
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258.
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To be able to influence the vibration of real structure it is necessary to identify its dynamic behaviour. Identification of modal parameters can be done by means of comp [...]
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259.
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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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260.
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Building structures in the vicinity of above-ground or underground transport lines are loaded by vibrations excited by the passage of motor vehicles or trains. These vibr [...]
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261.
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Naď, M.
The existence of a crack in a structural member introduces local modification of flexibility and consequently affects the dynamic behaviour of the cracked member. In this [...]
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262.
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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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263.
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The main purpose of this paper is to introduce mechanical properties of Engineered Cementitious Composites (ECC) and to describe the tensile testing method used at the Fa [...]
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264.
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A linear four degree-of-freedom (DOF) lumped model with 15 parameters of the human body sitting on a hard seat without a back-rest is developed in the sagittal plane (x-z [...]
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265.
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The paper deals with a working prototype of a system for the active vibration control of journal bearings to prevent rotor instability due to the oil film. The controllab [...]
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266.
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In order to simulate a launch, all space instruments undergo a vibration tests. Due to the fixing points in vibrating machines being different, adapters are used for each [...]
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267.
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This article is concerned with capabilities of bifurcation and chaos analysis methods used for analysis of the automotive differential operation and noise. The purpose of [...]
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268.
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The solution of vibration transfer from the subsoil to the structure is demonstrated using the example of a multi-storey reinforced concrete building, founded on a dual f [...]
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269.
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The presented paper documents the concept and some major results of the heat transfer and stress analyses performed on a cylinder and a cylinder head of an aircraft pisto [...]
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Large amplitude vibrations of cylindrical structural elements are observed when under the simultaneous action of wind and rain. Due to the action of wind and rain a trans [...]
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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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297.
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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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298.
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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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299.
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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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300.
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Moving load is such a load, which vary both in time and space. As the result the stress state of piping increase and frequency spectrum decrease. If the flow velocity is [...]
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301.
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The paper deals with the measurement of mechanical properties of bio-materials and with the design proposition of special experimental devices for such measurements in In [...]
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302.
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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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303.
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The paper is devoted to the analytical and experimental stress analysis in aluminum tube of car air – conditioner at static and dynamic loading at test equipment. After [...]
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305.
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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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306.
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Tůma, J.
The paper deals with angular vibration measurements using incremental rotation encoders. The main topic is focused at errors due to the impulse non-uniform distribution v [...]
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307.
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The paper presents an analysis of vibration of electromechanics system consisting of a 1DOF vibrating mechanical subsystem connected by means of spring and crank mechanis [...]
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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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330.
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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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331.
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332.
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The paper deals with the modelling of balancing machine vibration and the identification of the stiffness and damping coefficients of oil-film bearings. The real balancin [...]
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333.
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Holka, H.
The aim of the present research was to investigate the method of identifying the function of rotary vibration of the object in plane motion. The body motion was defined i [...]
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334.
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The aim of this study was to compare the approximate finite element model of acoustic spaces corresponding to the human adult male vocal tract and nasal cavity with the i [...]
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335.
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Půst, L.
Majority of publications on mechanical vibrations are based on the assumption that the external excitations is produced by an ideal source of power with prescribed freque [...]
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336.
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The paper deals with simulation of an electromagnetic vibration power generator. The vibration power generator harvests electrical energy from ambient energy of the mecha [...]
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337.
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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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In this paper the authors presents the use of global optimization techniques as a viable tool for parametric model-based damage detection especially the application of ge [...]
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This paper deals with the influence of moisture in determining the mechanical properties (dynamic modulus of elasticity) of porous building materials using nondestructive [...]
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Velopharyngeal insufficiency is modeled in frequency domain by the transfer matrix method in connection with conical acoustical elements. The vocal tract is considered as [...]
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Čech, V. jun.
This paper deals with introduction to problems of measurement of mechanical vibration with six degrees of freedom by optic sensors. Short description of method for improv [...]
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The paper deals with optimization process finding such geometrical form of acoustical cavities of the human supraglottal spaces which leads to excitation of predefined ac [...]
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378.
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Inverse method was used for numerical simulation of acoustic characteristics of a professional musical actor before and after vocal exercises. The geometrical data for a [...]
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379.
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1D and 3D finite element models of supraglottal tract designed for Czech vowel / a / are analyzed. Performed modal analysis is focused on investigation of the influence o [...]
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380.
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Results of a voice numerical simulation using finite element (FE) model of acoustic spaces corresponding to the human vocal tract for English vowel / a / are presented. T [...]
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383.
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The Source-filter theory does not take into account many important circumstances for generating of vowels, e.g. the effects of source on filter. One of these effects is i [...]
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384.
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Acoustic speech output in humans is commonly considered to results from a combination of a source of sound energy (e.g. the larynx) modulated by a transfer (filter) funct [...]
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385.
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The radiated sound pressure level (SPL) during phonation is known to be mainly regulated by lung pressure and glottal resistance (adduction), at the glottal level. Few re [...]
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386.
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Hrůza, V.
During fonation the vocal folds are excited by air flow. This air is portioned by vocal folds into separated air bubbles. These are the cause of the source voice. It is o [...]
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387.
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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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388.
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The model of the human vocal fold is created with transfer matrix method. The model is made from 32 cylindric or conic elements for Czech vowel /u/. The calculation is ca [...]
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389.
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The study presents three-dimensional finite element (FE) model of flow induced oscillations of the human vocal folds in interaction with acoustic processes in the simplif [...]
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391.
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A 3D finite element model of the human larynx including the vocal folds was developed. The model enables to take into account phonation position (tension and adduction) o [...]
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