Research on Passive Control Dynamics of Micro-vibration Based on Harmonic Balance Method

doi:10.3780/j.issn.1000-758X.2015.05.007

Abstract

Abstract: For investigating the effects of passive vibration isolator parameters on the vibration transmissibility, nonlinear stiffness characteristics of the vibration isolating material was described by the cubic polynomial function of its deformation, and the nonlinear damping was characterized by viscoelastic fractional derivative operator. The nonlinear dynamic model in microgravity environment of passive vibration isolator system was developed．The dynamic response characteristics were analyzed by the harmonic balance method, and the vibration transmissibility was obtained. Then the influence of stiffness, damping and mass of the isolator and isolated body on vibration isolation effect were analyzed．The results provide theoretic reference for design of spacecraft isolators．The results show that the effects of vibration isolator nonlinear damping coefficient on vibration transmissibility were obvious and the effects of vibration isolation object mass on resonance vibration peak value have a great deal to do with the vibration isolator nonlinear damping coefficient.

Key words: Isolation, Dynamicmodel, Harmonicbalancemethod, Vibrationtransmissibility, Nonlinear, Spacecraft

ZHU En-Yong, WEI Chuan-Feng. Research on Passive Control Dynamics of Micro-vibration Based on Harmonic Balance Method[J]. , 2015, 35(5): 50-55，63.

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URL: http://journal26.magtechjournal.com/kjkxjs/EN/10.3780/j.issn.1000-758X.2015.05.007

http://journal26.magtechjournal.com/kjkxjs/EN/Y2015/V35/I5/50

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Research on Passive Control Dynamics of Micro-vibration Based on Harmonic Balance Method

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