一种准零刚度隔振器的特性分析与实验研究

徐道临;张月英;周加喜;张 敬

振动与冲击 ›› 2014, Vol. 33 ›› Issue (11) : 208-213.

PDF(1670 KB)
PDF(1670 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (11) : 208-213.
论文

一种准零刚度隔振器的特性分析与实验研究

  • 徐道临,张月英,周加喜,张 敬
作者信息 +

Characteristic analysis and experimental investigation of a Vibration isolator with quasi-zero-stiffness

  • XU Dao-lin , ZHANG Yue-ying , ZHOU Jia-xi , Zhang Jing
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摘要

将五个线性弹簧并联组合,设计出一种具有高静态刚度、低动态刚度的非线性低频隔振器。分析了系统的刚度特性,给出了系统的准零刚度(QZS)条件。利用谐波平衡法分析了系统的动力学特性,得出了系统的力传递率,并分析了阻尼及激励力对系统传递率的影响。为了验证QZS系统的隔振性能,进行了一系列的实验研究。实验结果表明,QZS隔振器的低频隔振性能明显优于相应的线性系统。

Abstract

In this paper, a study of a high-static-low-dynamic-stiffness isolator comprising five linear springs is presented. A unique relationship between the geometry and the stiffness of the springs is derived in order to obtain the critical condition of Quasi-Zero-Stiffness (QZS). Dynamic analysis of the nonlinear QZS system is carried out with the harmonic balance method for the characteristic analysis of the force transmissibility. The effects of damping and excitation force on the system transmissibility are considered. To assess the isolation performance of the QZS system, a series of experiments are carried out. From the experimental results it can be seen that the QZS system more greatly outperforms than a corresponding linear system especially in low frequency range.

关键词

准零刚度 / 隔振器 / 低频隔振 / 力传递率

Key words

Quasi-zero-stiffness / vibration isolator / low-frequency vibration / force transmissibility

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徐道临;张月英;周加喜;张 敬. 一种准零刚度隔振器的特性分析与实验研究[J]. 振动与冲击, 2014, 33(11): 208-213
XU Dao-lin;ZHANG Yue-ying;ZHOU Jia-xi;Zhang Jing. Characteristic analysis and experimental investigation of a Vibration isolator with quasi-zero-stiffness[J]. Journal of Vibration and Shock, 2014, 33(11): 208-213

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