具有迟滞非线性的金属橡胶隔振器参数识别研究

金属橡胶隔振器具有非线性的动力学特性，对这种迟滞阻尼隔振器进行建模研究，建立了参数有物理意义的动力学模型.根据单自由度性能试验，进行了有关参数的试验识别方法研究，应用能量法及最小二乘法将非线性方程组转化为关于参数的线性方程组，从而对金属橡胶隔振器参数进行识别.识别结果与实验结果有较好的一致性，识别结果也说明了结构参数对隔振器性能的影响. 关键词： 金属橡胶隔振器 动力学模型 迟滞非线性 参数识别

Identification of parameters for metal rubber isolator with hysteretic nonlinearity characteristics

The nonlinear dynamic characteristics of metal rubber isolator are studied and a dynamic model with parameters with physical meaning is developed in this paper. According to the experimental results from a setup with single degree of freedom, the identification method for related parameters is researched. The nonlinear function that describes the dynamic behavior of the system is converted to the series of linear functions by using energy method and least square method. The identification results show good agreement with the experimental results and explain the effect of parameters on the performance of isolators.