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Impact system with the hertz contact
Půst, Ladislav ; Peterka, František
Analytical model of dynamic impact based on Hertz theory and connected with nonlinear damping is presented for different values of contact stiffness. Hysteresis loops are shown. The Hertz constact model is applied for investigation of properties of 1 impact system excited by harmonic force. After introducing dimensionless parameters, the domains of different periodic and chaotic impact oscillators are ascertained for the Hertz coefficient kH=3;10;30;100.
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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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