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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.
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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.
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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.
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