关键词: 迟滞非线性, 动力学模型, 金属橡胶, 非线性阻尼, 参数识别

Abstract: Three practical nonlinear model of dyanamic behavior of metal rubber is presented, the two specific forms of the trace model and the memory-based model is mathimatically derived with details, and the method of parameter separated identification is presented. Parameters of the model are identified with the experimental data of metal rubber, and the theoretical hysteresis curves are reconstructed, and the mechanism of the nonlinear damping behavior in the mathematical model of the metal rubber is analysed. The theoretical loops and the experimental one are close to each other with satisfactory performance. With the comparision of the three theoretical models, conclusion can be obtained that with the simple metathmatical form and the satistifactory precision, the mixed damping model should be the first-line choice in practical engineering. This study provides a prctical and effective method in modeling and the parameter identification of the metal rubber isoaltor.