Turbine blades are subjected to nozzle excitation frequencies that can correspond to eigen frequencies during acceleration and deceleration phases so that it is necessary to introduce some form of damping to avoid fatigue and mechanical damage of the blade material. Friction based solut...

Design parameters of fluid film bearings affect the stability of rotor-bearing systems, which can be characterized using so called threshold speed and a threshold curve (depending on a shaft speed and a chosen design parameter). The paper brings a detailed study of the shape o...

The paper deals with the computational model of quasi-static transport of 2-component electrolyte solution transport trough deformable porous medium respecting material microstructure. The multiscale approach is used to derive effective tensors describing macroscopic homogenized body. Numerical simulation are&#...

Challenges in modern engineering require implementation of more and more complex computational models. The computational models are often non-linear and even a slight modification of a design parameter can cause qualitative changes in a predicted response. Several visualisation methods which impr...

This paper deals with the investigation of driving properties such as rolling resistance of the chassis during the cornering and the effect of anti-roll bars on this phenomenon. This variable has a significant influence on the change of loading forces at tire contact patches, ...

The paper informs on some problems solved during approximately past twenty years in Pilsen using multibody simulations. Naturally, the list of activities is not comprehensive, it concerns activities of the authors in Výzkumný a zkušební ústav Plzeň s.r.o. and in the Department of M...

Muscles on a molecular level are created by actin and myosin filaments. In this scale, it is necessary to take into an account thermal fluctuations – describe in terms of Brownian motion. Due to the motion, it is impossible to predict exact position of a single myosi...

The main scope of the paper are shear and torsion tests of cork-composite Amorim ACM87. The material is a particle composite with viscoelastic properties. In order to investigate the behaviour of viscoelastic materials, performance of specific mechanical experiments is important. Some materi...

This paper deals with a suitable approach to the computational modelling of rolling element bearings in the framework of rotating systems dynamics. Various alternative approaches are briefly summarized and a chosen moderately complex approach is described in more detail. The presented bearin...

The contribution deals with analysis of dynamical properties of 1 DOF bistable mechanical oscillators. These systems appear in many technical applications which advantageously use their both static and dynamic properties. First, a mechanical mode based on von Mises truss is introduced and&#x...

A mathematical description of multibody mechanical systems containing flexible bodies often leads to a nonlinear set of differential–algebraic equations of motion which can be solved using various numerical integration schemes. In this paper, the possibilities of the commonly known Newmark integr...

This papper deals with modelling of blood perfusion in the liver tissue and focuses on the identification of the model parameters. For a description of perfusion a multi-compartment Darcy model is used. This model describes a hierarchical flow in the tree structure of the live...

This work is focused on the modelling of car to pedestrian crash scenario. Virtual hybrid human body model VIRTHUMAN as well as a simplified model of car chassis is modelled under Virtual Performance Solution software. The main idea of the work is the investigation and se...

Behavior of various, even hypothetical, materials can be predicted via ab-initio electronic structure calculations providing all the necessary information: the total energy of the sys- tem and its derivatives. In case of non-periodic structures, the existing well-established methods for electronic...