Nonlinearity Emulation and Numerical Analyses of Pneumatic Vibration Isolation System

ZHONG Yan-chun;YANG Qing-jun;BAO Gang

Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (3) : 258-263.

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PDF(1780 KB)
Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (3) : 258-263.
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Nonlinearity Emulation and Numerical Analyses of Pneumatic Vibration Isolation System

  • ZHONG Yan-chun; YANG Qing-jun; BAO Gang
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Abstract

A nonlinear model of pneumatic vibration isolation system was established. Based on this,
simulation analyses were done using matlab/simulink software and the response curves were got under simple
harmonic excitation. The results show that the system has strong nonlinear characters. Simple harmonic excitation
can induce subharmonic/multiple frequency and offset response at the zero frequency. When frequency near to the
linearized natural frequency the subharmonic and multiple frequency become stronger. Guided by the simulation
results, a possible numerical solution was put forward. This solution which based on harmonic balance method got
the numerical solution by using iteration method. The validity of this method is verified through comparisons withsimulation results, which show good agreements with the numerical solution.

Key words

Pneumatic isolation vibration / Nonlinearity / Harmonic response / Simulation analyses / Numericalsolution

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ZHONG Yan-chun;YANG Qing-jun;BAO Gang. Nonlinearity Emulation and Numerical Analyses of Pneumatic Vibration Isolation System[J]. Journal of Vibration and Shock, 2011, 30(3): 258-263
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