金属橡胶消极减振系统复杂响应特性研究

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (4) : 87-92.

论文

金属橡胶消极减振系统复杂响应特性研究

李玉龙,白鸿柏,何忠波,路纯红

作者信息 +

Complex Response characteristic Research of Passive Metal-Rubber Vibration Isolation System

LI Yulong, BAI Hongbai, HE Zhongbo, LU Chunhong

Author information +

文章历史 +

摘要

对金属橡胶非线性消极减振系统的复杂响应特性进行了研究，基于减振器的双折线本构关系对隔振器的迟滞恢复力进行了线性等效，推导了减振系统的状态方程；对减振器进行了动态加载实验，利用实验数据识别得到了减振器的实际物理参数；利用辨识得到的有量纲的物理参数对系统进行数值仿真，绘制了系统随激励幅值和频率变化的分岔图，确定了系统产生混沌振动的参数区间，分析了金属橡胶减振系统的单频输入多频甚至宽频输出的复杂响应特性，并通过振动实验进行了验证。

Abstract

The complex response of metal rubber vibration isolation system was studied. The hysteretic restoring force was simplified by linear equivalent based on double broken line constitutive relation of the shock absorber. The mathematical model of the system was built, and the state equation was derived. The dynamic test of the shock absorber was done, and the physical parameters of the shock absorber were identified by using the test data. The numerical simulation of the system was done by using the physical parameters, the bifurcation diagrams in terms of excitation force and frequency were obtained, and the parameters value range of the system was determined. The characteristic of single frequency input caused multiple or broadband frequency domain of the Metal-Rubber vibration isolation system was analyzed. Finally, the analysis results were verified by experiment.

导出引用

李玉龙,白鸿柏,何忠波,路纯红. 金属橡胶消极减振系统复杂响应特性研究[J]. 振动与冲击, 2016, 35(4): 87-92

LI Yulong, BAI Hongbai, HE Zhongbo, LU Chunhong. Complex Response characteristic Research of Passive Metal-Rubber Vibration Isolation System[J]. Journal of Vibration and Shock, 2016, 35(4): 87-92

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