Volume 11, number 1 (2017) Domovská stránka kolekce Zobrazit statistiky

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Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 8 z 8
Čečrdle, Jiří
Whirl flutter optimisation-based solution of twin turboprop aircraft using a full-span model

parts as a propeller or a gas-turbine engine rotor. The proposed optimisation-based analytical procedure is used to determine the critical values of the engine attachment stiffness parameters for the preselected flutter speed. For the half-span model, two design variables are used.&#x...

Lašová, Zuzana , Zemčík, Robert
Determination of group velocity of propagation of Lamb waves in aluminium plate using piezoelectric transducers

A prior knowledge of group velocities of Lamb wave modes is a key for analysis of time signals in guidedwave based structural health monitoring. The identification of multiple wave modes may be complicated due to dependency of group velocity on frequency (dispersion). These&...

Madasu, Krishna Prasad , Gurdatta, Manpreet Kaur
Rotary oscillations of a micropolar fluid sphere in a bounded medium

The present study examines the axisymmetric rotary oscillation of a micropolar fluid sphere in concentric spherical cavity filled with Newtonian viscous fluid. A continuity of velocity components and stress together with the spin vorticity relation are used at the interface between&#x...

Maity, Narottam , Sakti, Barik Pada , Chaudhuri, Pranay Kumar
Propagation of plane waves in a rotating magneto-thermoelastic fiber-reinforced medium under G-N theory

The article is concernedwith the possibility of plane wave propagation in a rotating elastic medium under the action of magnetic and thermal fields. The material is assumed to be fibre-reinforced with increased stiffness, strength and load bearing capacity. Green and Nagdhi’s con...

Rypl, Rostislav , Vořechovský, Miroslav
Multiscale probabilistic modeling of a crack bridge in glass fiber reinforced concrete

The present paper introduces a probabilistic approach to simulating the crack bridging effects of chopped glass strands in cement-based matrices and compares it to a discrete rigid body spring network model with semi-discrete representation of the chopped strands. The glass strands&#x...

Voltr, Petr
Calculation of locomotive traction force in transient rolling contact

To represent thewheel-rail contact in numerical simulations of rail vehicles, simplified models (Fastsim, Pola´ch etc.) are usually employed. These models are designed for steady rolling only, which is perfectly suitable in many cases. However, it is shown to be limiting for simu...

Wei, Dongming , Kadyrov, Shirali , Kazbek, Zhassulan
Periodic solutions of a graphene based model in micro-electro-mechanical pull-in device

Phase plane analysis of the nonlinear spring-mass equation arising in modeling vibrations of a lumped mass attached to a graphene sheet with a fixed end is presented. The nonlinear lumped-mass model takes into account the nonlinear behavior of the graphene by including the&#...

Yakhlef, Othman , Murea, Cornel Marius
Numerical procedure for fluid-structure interaction with structure displacements limited by a rigid obstacle

A fixed point algorithmis proposed to solve a fluid-structure interaction problem with the supplementary constraint that the structure displacements are limited by a rigid obstacle. Fictitious domain approach with penalization is used for the fluid equations. The surface forces from t...

Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 8 z 8