999C1a:GA101/97/0670 - Výsledky hledání - Digitální repozitář

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	Most important results of the investigation of the impact oscillator dynamics obtained during finished projects GA CR and COST Peterka, František The investigation of the dynamics of oscillator with soft impacts explained the development of non-linear phenomena, when the oscillator transits from the linear one into the oscillator with rigid impacts,described by the Newton elementary theory. Two symmetrically arranged oscillators was studied theoretically and using the numerical simulation with the aim of their application in the forming. Úplný záznam
	Application of two appropriate analytical approaches to the piecewise linear system stability analysis of periodic motion based on eigenvalue and small difference methods Kocanda, Lubomír Stability analysis of piecewise linear systems could be solved either by numerical simulation or by analytical methods. This paper contribution is to introduce several ways of the system stability investigation by means of methods using linearisation in perturbation. Several approaches are counted in. Their results are compared and discussed. Úplný záznam
	Global view on dynamics of impact oscillator Peterka, František Impact oscillator is the simplest mechanical system with one degree of freedom, the periodically excited mass of which can impact on the stop. The aim of this paper is to explain the dynamics of the system, when the stiffness of the stop changes from** to infinity. It corresponds to the transition from the linear system into strongly nonlinear system with rigid impact. Úplný záznam
	Dynamics of oscillator with piecewise linear model of soft impacts Peterka, František ; Tondl, Aleš The aim of this contribution is to present a more detail explanation of different types of motion of the oscillator with soft impacts using regions of existence and stability, phase trajectories and time series of impact motions. The explanation is exteded into lower and negative values of static clearance. Negative clearance corresponds to a static prestress of vibrating mass to the stop. Úplný záznam
	Chaos typu intermitence u oscilátoru s rázy Peterka, František ; Čipera, Stanislav ; Kotera, T. Chaotický pohyb typu intermitence se vyskytuje u oscilátoru s rázy v okolí hranic stability typu sedlo-uzel subharmonických pohybů se dvěma rázy v periodě pohybu. Chaos vzniká v důsledku výskytu dodatečných rázů v procesu rozvoje nestability. Úplný záznam
	Experiments with double oscillator with soft impacts Kocanda, Lubomír ; Peterka, František Results of the experimental investigation of a double-impact oscillator model and comparison of differences in measurement approaches of systems with rigid and soft impact are presented. The sensitivity of initial conditions for the particular motion of these systems is high, especially when soft impacts are included. Several points worth mentioning and having in mind during the measurement. Úplný záznam
	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. Úplný záznam
	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. Úplný záznam
	Dynamics of double impact oscillator Peterka, František ; Szöllös, Ondřej ; Formánek, Pavel ; Veselý, Jan Úplný záznam
	Interaction of active magnetic bearing with fluidoelastic effects Půst, Ladislav Úplný záznam

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