National Repository of Grey Literature 13 records found  1 - 10next  jump to record: Search took 0.04 seconds. 
A new approach to the modelling of magnetic drive
Houfek, L. ; Král, P. ; Fuis, Vladimír
In paper is describe experimental drive and methodology of experimental verification of dynamic properties of magnetic drive
At analysis of dynamic phenomenon in complicated nonlinear systems with analytical methods
Hortel, Milan
Some problems by the analysis of mechanical systems lead on the solution of nonlinear integrodifferential equations with kernel in the form of Green´s functions. The properties and construkction of this kernels are discussed.
Subharmonic and chaotic motions of the oscillator with soft impacts
Peterka, František ; Kocanda, Lubomír ; Qasmi, M.
This paper shows the behaviour of impact oscillator with soft impacts using numerical simulation of motion. Parameters of the system correspond to parameters of the experimental device.parametrům experimentálního zařízení.
The approximation of correlation dimension of strange attractors of two-masses mechanical system with impacts
Čipera, S. ; Peterka, František
The motion of the pair of bodies with the both-sides impacts and dry friction forces is considered. The Poincaré sections in phase-space of the relative motion are utilized. The correlation dimensions of strange attractors are estimated from numerically generated data with respect to the changes of the drive frequency.
A note to the influence of absorptive areas on dynamic characteristics of cylindrical acoustic space
Dedouch, K. ; Horáček, Jaromír ; Vampola, T.
The subject of the paper is numerical FE modal analysis of cylindrical acoustic space. The absorptive areas are taken into account on the part of the boundary of the acoustic space. The influence of wall impedance on the natural frequencies, damping and modes of vibration of acoustic space is studied.
Modelling of parametric systems with non-linear couplings
Moravec, J. ; Kotek, Vladimír ; Krejsa, Jiří
In the article are presented results of dynamic analysis of one mass model. This model is nonlinear coupled. The behaviour of the model is investigated for intervals of excitation and coupling conditions
Contribution to mathematical modeling of drive parasitic vibration
Kratochvíl, Ctirad ; Kalous, J. ; Kotek, Vladimír
This article deals with the simulation of dynamic responses of electromechanical drive systems using mathematical-numerical methods. We constructed an idealized torsion system of the mechanical part of the real drive to examine the parasitic effects.
Loosening of press - fitted pivots
Dobiáš, Jiří ; Höschl, Cyril
If a press-fitted clamped-free pivot is exposed to alternating loading at its free end while the forces act normal to its central axis, a gradual global displacement of the pivot in the axial direction may occur under some circumstances.
Some results of measured vibration of longitudinal high velocity flow around a cylinder
Vlček, Václav ; Luxa, Martin
A fixed cylinder with a short elastically mounted cylindrical afterbody has been placed in an axisymmetric channel. The relation between different disturbances in oncoming flow and aeroelastic characteristics of the vibrating body has been measured.
Stress waves in thin shells - numerical solution and experiment
Mazúch, T. ; Trnka, Jan
Double pulse holointerferometry was used for studying the elastic wave propagation in a thin steel plate. The experimental results are compared with the finite element solution.

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