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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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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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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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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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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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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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Křiváková, Jarmila
Abstrakt: Článek je zaměřen na počítačové modelování stability válcových skořepin řešených dynamickou nelineární analýzou programovým souborem COSMOS/ [...]
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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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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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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: 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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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Programming robot PLC controller through voice recognition system has been presented. The purpose of this project is a development of a robot control voice protocol allow [...]
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The occurrence of deformation twins in the ductile-to-brittle transition (DBT) temperature region were observed under different testing conditions. Mechanical twinning c [...]
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The subject of this work is experimental observation of the development of internal damage and its evolution in aluminium alloy flat specimens with different configuratio [...]
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The Pulse Width Modulation is always accompanied by an output voltage distortion. This is caused by voltage drops on real switching elements and also by using of the nece [...]
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This paper describes the nonlinear analysis of the reinforced concrete wall of the bubbler tower (BT) due to extreme pressure and temperature loading. The behaviour of th [...]
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In this study ultrasonic computer tomography and sonography are compared in the investigation of a cored marble column. The marble column presents a complex stratigraphy [...]
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Qian mausoleum is the only tomb that a couple buried together, who both were emperors of Tang dynasty, the only empress in Chinese history, Wu Zetian and her husband Gaoz [...]
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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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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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78.
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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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79.
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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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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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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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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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84.
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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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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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86.
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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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87.
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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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88.
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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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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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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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91.
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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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92.
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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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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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Subtask number 3 of the project number 6 of the Research Centre for the Production Technique and Technology (co-operative project of VUT – BUT and SST) is to design, de [...]
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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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The possible method of walking policy obtaining of four-legged robot through Q-learning is discussed in the contribution. Q-learning is implemented using architecture rep [...]
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100.
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The Pierre Auger Observatory is designed for study of the universe´s highest energy showers, witch evolve in high layers of atmosphere, where an elementary particle stri [...]
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101.
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Temperature evolution in concrete constructions due to hydration heat presents a formidable problem causing early age cracking and from the chemical point of view changin [...]
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102.
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Presented paper deals with computational fatigue strength prediction of high pressure level steam turbine blade pin joints. Quazi-static FE analysis of one turbine disk s [...]
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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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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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146.
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The modelling of reinforced concrete slabs is a topic of this paper. The main attention is paid to the cracks propagation, the increase and localization of the damage and [...]
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147.
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Three point bending test of central notched specimen is used for determination of fracture properties of concrete, mortar and hardened cement paste. The properties – e. [...]
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148.
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Zelenka, J.
The paper deals with the running properties of the working Diesel rail car MPV 22, reconstructed from the former machine of the DGKU-5 type, by the Track Machine Station [...]
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149.
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The concept of $J_R$ curves is well established in structure assessment. However, the shape of $J_R$ curves is influenced by constraint e ects significantly. Such phenome [...]
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This contribution is consider with computational modelling of oil film flow stability in long lemon, offset and lemon-offset uncavitated bearings. In this contribution is [...]
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151.
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Crack problem for an array of collinear cracks in composite matrix, where the cracks tips may terminate at the interfaces of inclusions with the different elastic propert [...]
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152.
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Concrete is represented as a two-phase material in this paper. Behaviour of a crack with its tip on the interface between two different materials - hardened cement paste [...]
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153.
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The stability criteria of V-notched bodies under combination of loading modes I and II are suggested and compared in the article. Methodology of stability criterion sugge [...]
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154.
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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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155.
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A workpiece manipulation assembly includes two main parts. A base is permanently connected to a spindle. A pallet is manipulated of a rotary manipulation table from worki [...]
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156.
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V příspěvku jsou uvedeny některé výsledky výzkumu MKP modelování šíření únavových trhliny v podmínkách smíšeného módu namáhání. Pro simulování r [...]
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157.
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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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158.
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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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159.
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This paper is focused on fracture energy which belongs to the basic fracture-mechanical characteristics of quasi-brittle materials. This parameter is explored here from t [...]
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160.
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The present world development of mobile machines leads to a highpowered high-speed constructions with minimum dimensions and masses. By such light high-speed systems as a [...]
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161.
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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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162.
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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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163.
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For numerical modelling particle saltation in channel with rough bed is important to define a bed configuration. The paper deals with the bed consisting of spherical part [...]
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This paper compares two approaches to the analysis of deflections of reinforced concrete beam structures with consideration of creep. The first is based on simplified met [...]
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Abstrakt: Článek se zaměřuje na řešení torzního testu pro krátký ocelový vzorek. V průběhu řešení bylo respektováno uchycení v čelistech zkušebního s [...]
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197.
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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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198.
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The calibration of the potential method DC/PD is calculated for the side-grooved CT-sample with point current inputs. The grooves are modelled by a line transition resist [...]
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199.
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Fracture behaviour of concrete is studied using two-phase material model. Propagation of a single macrocrack in hardened cement paste (matrix) and aggregate (particle) is [...]
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200.
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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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201.
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The paper deals with application of the FETI (Finite Element Tearing and Interconnecting) method to finite element solution of contact problems while taking into account [...]
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202.
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Structures operating at high temperatures are damaged by creep processes. If the structure is also subjected to cyclic loading, the fatigue damage is usually significant. [...]
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203.
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The crack growth prediction techniques in the critical area of the small transport aircraft undercarriage bracket has been describe in this paper. Stress-state was determ [...]
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204.
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Bubák, A. jun.
This paper deals with an axially compliant suspension for the secondary part of a linear motor. There are described its properties and discussed the possibilities of appl [...]
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205.
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Mrázek, P.
Mechanical control of the modern small-diameter circular knitting machines is substituted electromechanical control systems in this time. This contribution deals in proje [...]
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206.
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The objective of this paper is present the development and application of FEM software (ICS FEM) for effective numerical simulation of load-bearing capacity of structures [...]
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207.
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This contribution deals with problem of solids weakened by cracks or joints. The rock containing crack is the model example of such a problem. Determination of properties [...]
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209.
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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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210.
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Petríková, I.
This paper proposes one of the approaches to cam curve design and adverts to cam curve description using polynomial function. Serious properties of the polynomial curves [...]
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211.
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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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212.
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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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213.
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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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214.
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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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215.
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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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216.
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Dynamic fragmentation (disintegration of continuous body into smaller pieces under dynamic loading) is a physical phenomenon observed in many fields of engineering and sc [...]
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217.
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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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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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244.
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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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245.
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The contribution deals with the arrangement of coordination mechanism of gait controllers of four legged robot. Robot system is modeled as discrete events dynamic system [...]
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246.
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There are several randomized methods for problem of path planning. Rapidly exploring random trees (RRT) is a method which can deal with constraints typical for legged wal [...]
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247.
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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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248.
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Smazal, V.
ŠKODA TS a.s. has developed a new generation of curing presses for curing tires for trucks, tractors, and heavy building machines. New presses have many original technic [...]
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249.
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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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250.
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In this paper is solved a 3D analysis of growing crack of the chevron notched three-point-bending specimen. On macroscale the specimen body is modeled as an elastic homog [...]
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251.
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In 2004, ŽĆAS, a. s. produced three manipulators to centre and transfer hot railway wheel forgings intended for the forging line with the new CKZW 65/56 forging press. [...]
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252.
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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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253.
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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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254.
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The present technological trends in area of microelectronics and sensorics allow a rapid research and develop in many application regions. One of the regions is the resea [...]
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255.
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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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256.
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A 3D elastic-plastic FEM model with small strains was used for simulation of the deformation mechanics at the curved front of the planar fatigue crack growing in the thic [...]
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257.
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Paper is focused on comprehensive solution of probabilistic integrity assessment of pressure vessels. Engineering criteria was fully respected during solution, however fr [...]
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258.
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The contribution deals with the 3D analysis of the chevron notched three point bending specimen which is used to determine the fracture toughness of brittle matrix compos [...]
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259.
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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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260.
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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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261.
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Gajdoš, Ľ.
The paper deals with derivation of relations between the half-length of a longitudinal through crack in a pressure linepipe and outflow parameters of water as followed fr [...]
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262.
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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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263.
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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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264.
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This paper describes mathematic model of C-axis over mentioned machine. C-axis is controlled with position feedback and its mathematic model is determined for observation [...]
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265.
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The aim of this paper is to investigate the beginnings of crack propagation from sharp V-notches. Stress distribution around the tip of a V-notch is described on the basi [...]
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266.
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Corrosion of reinforcing steel in concrete is one of the most influencing factors causing the degradation of reinforced concrete structures, conducting to concrete crack [...]
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267.
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The contribution discusses possible approach for the formulation of fracture criteria for the general stress concentrators – especially a surface crack terminating at t [...]
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268.
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Koudelka, P.
The paper presents the results of physical experiment (E3/0+2) both with the passive pressure and the pressure at rest of the ideally noncohesive sand on a retaining wall [...]
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269.
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The fatigue crack growth rate in the Eurofer 97 steel was measured by two different methodologies. Small crack growth data were obtained using cylindrical specimens with [...]
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270.
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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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271.
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This paper presents a simulation of 3D curved crack propagation in a steam turbine blade lock. These fatigue cracks are often initiated near a blade root contact zone. Tw [...]
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272.
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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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273.
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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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274.
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Motion planning is essential for mobile robot successful navigation. There are many algorithms for motion planning under various constraints. However, in some cases the h [...]
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275.
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Seven ductile fracture criteria are applied to simulation of cold forward extrusion and their performance in prediction of chevron cracks is presented. The criteria are i [...]
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276.
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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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277.
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Specific feature of the nuclear power plants is in comparison with coal fired plants the break postulation of each high energy piping. Fluid system is considered as high- [...]
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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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296.
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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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297.
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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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298.
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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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299.
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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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300.
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Presented paper deals with fracture behaviour of carbon fibre reinforced composites on the basis of Portland (PC) and alumina (HC) cement. Carbon fibres can be used for [...]
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301.
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In case of two-parameter linear fracture mechanics a study of inhomogeneity influence on behaviour of short cracks is performed. The values of stress intensity factor (KI [...]
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302.
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The influence of corner singularity on crack behaviour for a threedimensional structure is described in this paper. The distribution of stress singularity through the thi [...]
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303.
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Presented paper is concerned with the numerical modeling of quasibrittle materials such as concrete. Brancherie and Ibrahimbegovic are authors of a simple model capable o [...]
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304.
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A substantial number of experimentally based works indicate the changes in crack propagation direction on bi-material interface in composite laminate materials. The paper [...]
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305.
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This article deal with problems of cracks in bodies with bimaterial interface. The stress and displacement near the front of crack located at the interface between two or [...]
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306.
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This contribution presents a simple numerical model for crack growth under mode-I compressive fatigue loading. Residual tensile stress at the crack tip, which is responsi [...]
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307.
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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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308.
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Podešva, J.
The modeling of the mechanical structures with large number of degrees of freedom (DOF) was in the past the problem of the machine time and disk space. On the today’s h [...]
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309.
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310.
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311.
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312.
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313.
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314.
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315.
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316.
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317.
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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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318.
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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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319.
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Abstrakt: Possible discretization technique oj the continuous state space oj Jour-Iegged robot using simultaneous compositions oj behaviors is described in this contribut [...]
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320.
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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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321.
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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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322.
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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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323.
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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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324.
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Cyclic strain of tyres leads to hysteresis loses. Long-term and repeated deformation damages tenacity of composite structure of tyre, which causes destruction of tyre. Ra [...]
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325.
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Barborák, O.
Needle mechanism is directly participating on creation of stitch. Needle stick, together with needle, creates rectilinear movement in the most of sewing machines. Howeve [...]
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326.
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To the interpretation of crack growth, it is substantial to estimate the plastic region geometry in front of a crack. Performed here is a study for predicting crack growt [...]
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327.
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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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328.
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A two-parameter fracture mechanics method is applied to small cracks near a stress concentrator. The small crack in the present contribution is considered as crack influe [...]
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329.
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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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330.
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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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331.
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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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332.
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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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333.
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334.
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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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335.
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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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336.
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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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337.
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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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338.
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339.
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340.
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341.
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342.
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343.
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344.
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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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345.
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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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346.
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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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347.
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348.
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Paper considers the task of forecasting of individual remaining resource of metal wares of bridge cranes when their life time corresponding to norm is elapsed. Decision o [...]
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349.
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Under the assumptions of linear elastic fracture mechanics the behaviour of cracks and general singular stress concentrators is studied and compared. The stress distribu [...]
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350.
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This article shows: 1. Some studies of a low-cycle material fatigue caused by cyclical contact between two spheres with the same diameters. The spheres are made up from m [...]
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351.
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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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352.
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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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353.
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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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354.
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Linear guiding of machine tools is a very important design element. It can be made as a straight linear guiding or as a curved type, either with the limited stroke length [...]
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355.
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Pečínka, L.
Pipe break probabilities calculated in nuclear industry for purposes of PSA studies are based either on the in sights from the operating experience or on the fracture mec [...]
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356.
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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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357.
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This paper deals with alternative techniques how to get the velocity signal that is needed for the velocity feedback loop. Common implementation of obtaining the velocity [...]
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358.
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Control design of rotating shaft levitated by active magnetic bearing is described in this contribution. Genetic algorithm is used to design controller parameters. Depend [...]
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359.
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The flow structures inside a cylindrical cavity are studied experimentally using time-resolved PIV. The flow is excited using rotating lid controlled by step motor. POD a [...]
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360.
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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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361.
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The manufacturing program of ZDAS, a.s. includes the straightening machine of XRK type. The XRK 2-180 straightening machine is an energy-intensive one. Within the framewo [...]
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362.
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The paper describes a modelling technique of tool rest of modern machining centre with focus at damping of dovetail groove slideway. Damping of tool rest structure strong [...]
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363.
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364.
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365.
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366.
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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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367.
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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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368.
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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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369.
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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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370.
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The paper deals with a static and fatigue strength criterion based on the theory of the reference normal and shear stresses – see Fuxa, J. (2003) and Fuxa, J. (2004). T [...]
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371.
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The paper presents the results of physical experiment E3/0+2 both with the passive pressure and the pressure at rest of the ideally non-cohesive sand on a retaining wall [...]
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372.
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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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373.
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Novotný, J.
More than thirty-seven years ago the Permanent Commission for Standardization of Terminology in Mechanism and Machine Science (Commission A IFToMM) was founded. Since the [...]
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374.
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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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375.
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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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376.
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377.
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378.
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379.
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380.
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Vlach, R.
The paper is concerned with computational simulation of stator winding heating of synchronous machine. A parametric model where is possible change design of machine. Soft [...]
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381.
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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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382.
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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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383.
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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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384.
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Morávka, Š.
The methods, how to do in-service inspections of ageing reinforced concrete of nuclear power plants more quickly, cheaply and reliably, are still looking for. Advanced Im [...]
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385.
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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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386.
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In the paper, two methods for modelling machine tool drives with ball screws are shown and compared. There are common equation formulation and the multi-pole modelling. T [...]
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387.
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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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388.
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In this paper, we will present a robust and fast motion detection approach, which can localize and keeps track an object in motion under hard real-time constraints. To el [...]
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389.
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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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390.
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Ventilation-control design was applied to a synchronous machine with a single exterior ventilation source. Control of this machine's ventilation, and thus its cooling as [...]
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391.
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392.
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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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393.
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The article gives the general view to the detection of defects (rather the cracks) of mechanical structures through initializing and receiving so-called Rayleigh waves, w [...]
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394.
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395.
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396.
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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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397.
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398.
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399.
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