Research on Nonlinearity Weakening Method of Quasi-zero-stiffness Vibration Isolator

Han Chao; Liu Guixiang; Shao Xiaolin; Liu Tianyan; Xu Deshui; Zhang Kun; Liu Xueguang

doi:10.13832/j.jnpe.2022.S1.0121

Volume 43 Issue S1

Jul. 2022

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Article Navigation > Nuclear Power Engineering > 2022 > 43(S1): 121-126

Han Chao, Liu Guixiang, Shao Xiaolin, Liu Tianyan, Xu Deshui, Zhang Kun, Liu Xueguang. Research on Nonlinearity Weakening Method of Quasi-zero-stiffness Vibration Isolator[J]. Nuclear Power Engineering, 2022, 43(S1): 121-126. doi: 10.13832/j.jnpe.2022.S1.0121

Citation:

Han Chao, Liu Guixiang, Shao Xiaolin, Liu Tianyan, Xu Deshui, Zhang Kun, Liu Xueguang. Research on Nonlinearity Weakening Method of Quasi-zero-stiffness Vibration Isolator[J]. Nuclear Power Engineering, 2022, 43(S1): 121-126. doi: 10.13832/j.jnpe.2022.S1.0121

Citation:

Han Chao, Liu Guixiang, Shao Xiaolin, Liu Tianyan, Xu Deshui, Zhang Kun, Liu Xueguang. Research on Nonlinearity Weakening Method of Quasi-zero-stiffness Vibration Isolator[J]. Nuclear Power Engineering, 2022, 43(S1): 121-126. doi: 10.13832/j.jnpe.2022.S1.0121

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Research on Nonlinearity Weakening Method of Quasi-zero-stiffness Vibration Isolator

doi: 10.13832/j.jnpe.2022.S1.0121

1.
Nuclear Power Institute of China, Chengdu, 610213, China
2.
College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, China

Received Date: 2022-01-18
Rev Recd Date: 2022-03-07
Publish Date: 2022-06-15

Abstract

Abstract

In order to weaken the nonlinear characteristics of the quasi-zero-stiffness vibration isolator, a nonlinearity weakening method of quasi-zero-stiffness vibration isolator using softening negative stiffness to neutralize hardening negative stiffness is proposed. By adjusting the design parameters, the nonlinear terms of the two negative stiffness cancel each other out, and the system only retains the linear stiffness characteristics. The feasibility of this method is verified by the cases of permanent magnet negative stiffness and three-spring negative stiffness. The results show that the nonlinear stiffness of the quasi-zero-stiffness vibration isolation system designed by this method is greatly weakened and the vibration isolation performance of the system is enhanced.
- Quasi-zero-stiffness (QZS),
- Vibration isolation,
- Nonlinearity,
- Weakening method

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References(10)

References

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