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Analysis of the effects of nonlinear viscous damping on vibration isolator

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Abstract

In this paper, vibration isolator of single degree of freedom systems having a nonlinear viscous damping is studied under force excitation. Stability of the steady state periodic response has been discussed. The influence of damping coefficients on the force transmissibility and displacement transmissibility is investigated. The relationship between amplitude and frequency is derived by using the averaging method. Results reveal that the performance of the nonlinear isolator has some beneficial effects compared with linear isolator in a certain range. Numerical simulations are presented to illustrate the results.

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Acknowledgments

The authors gratefully acknowledge that this work was supported by the Natural Science Foundation of China under Grant No. 51275229 and the National Basic Research Program of China (973 Program) under Grant No. 2011CB707602.

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  1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Qibao Lv & Zhiyuan Yao

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  1. Qibao Lv
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  2. Zhiyuan Yao
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Correspondence to Qibao Lv.

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Lv, Q., Yao, Z. Analysis of the effects of nonlinear viscous damping on vibration isolator. Nonlinear Dyn 79, 2325–2332 (2015). https://doi.org/10.1007/s11071-014-1814-2

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  • DOI: https://doi.org/10.1007/s11071-014-1814-2

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