Physical mechanism of the influence of the nonlinearity induced by damping on the isolation characteristics of whole-spacecraft vibration isolation platform

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (10) : 173-176.

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Physical mechanism of the influence of the nonlinearity induced by damping on the isolation characteristics of whole-spacecraft vibration isolation platform

ZHANG Ye-wei1; FANG Bo2; LI Song3; TANG Ye4; WANG Long5

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Abstract

Starting from the physical mechanism, the nonlinear equivalent dynamic models of discrete isolation system was set up by the deformation of the cubic polynomial function and fractional derivative operator, and the vibration transmissibility from the bottom of the isolator to the satellite was obtained by harmonic-balance method, also the phenomenon of vibration isolation platform affected by excitation magnitude was explained from the physical mechanism by numerical solutions, providing references for the design and practical application of discrete whole-satellite vibration isolation platform.

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nonlinear vibration / viscoelastic fractional derivative / damp / vibration isolation

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ZHANG Ye-wei; FANG Bo; LI Song;TANG Ye; WANG Long. Physical mechanism of the influence of the nonlinearity induced by damping on the isolation characteristics of whole-spacecraft vibration isolation platform[J]. Journal of Vibration and Shock, 2011, 30(10): 173-176