橡胶隔振器非线性动力学模型理论与实验研究

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振动与冲击 ›› 2010, Vol. 29 ›› Issue (1) : 173-177.

论文

橡胶隔振器非线性动力学模型理论与实验研究

赵广1;刘健2;刘占生3

作者信息 +

Theoretical and experimental research on nonlinear model of rubber isolator

Zhao Guang1;Liu jian2;liu Zhansheng3

Author information +

文章历史 +

摘要

基于静态压缩实验、广义胡克定律和应变能密度推导了描述橡胶超弹性的本构关系，进而获得了橡胶隔振器静态刚度模型；在此基础上，提出基于动态激振实验的动态刚度模型，该模型由橡胶隔振器静态刚度、位移系数和频率系数组成。在此基础上，对单自由度质量-隔振器系统进行数值仿真和实验测试，二者获得的系统的固有频率基本吻合，验证了本文提出的橡胶隔振器动力学模型的正确性。研究结果为获得橡胶隔振器静、动态刚度模型提供了简洁、实用的思路，并为研究含有隔振器的动力系统的动力学特性提供了理论基础。

Abstract

A new constitutive relation describing the rubber hyperelastic was derived based on static stiffness testing, generalized Hooke law and strain-energy density, and the static stiffness model of rubber isolator. Dynamic stiffness model with considering of rubber visco-hyperelastic was also proposed with dynamic excitation experiment, this model consists of static stiffness, displacement coefficient and frequency coefficient. Numerical simulation is employed to obtain the resonance frequency of single degree of freedom of mass- isolator system, the result is closely to experiment test which verifies the reasonability and effectiveness of this dynamic model. Research results provide compact and valid method for identifying the static and dynamic models of rubber isolator, and also provide theoretical foundation for studying the dynamics of power machinery with isolators.

导出引用

赵广;刘健;刘占生. 橡胶隔振器非线性动力学模型理论与实验研究[J]. 振动与冲击, 2010, 29(1): 173-177

Zhao Guang;Liu jian;liu Zhansheng. Theoretical and experimental research on nonlinear model of rubber isolator[J]. Journal of Vibration and Shock, 2010, 29(1): 173-177