O 型钢丝绳隔振器动态迟滞模型参数识别方法研究

摘要

A modified normalized Bouc-Wen model was adopted to describe the hysteretic behaviour of an O-type wire-cable vibration isolator which exhibits nonlinear elastic stiffness and asymmetric hysteresis dynamic behavior.The parametric identification of the O-type wire-cable vibration isolator was realized based on the modified normalized Bouc-Wen model.A new simple yet effective two-stage identification method was developed.Numerical simulations and periodic loading experiments were carried out to validate the proposed identification method.The results indicate that the proposed identification method is effective and accurate for identifying the model parameters of O-type wire-cable vibration isolator, and the experimental hysteresis loops are close to the identified hysteresis loops.%针对 O 型钢丝绳隔振器具有非线性弹性刚度、非对称迟滞动态特性，采用改进的归一化 Bouc-Wen 模型并基于该模型对钢丝绳隔振器动态特性参数识别方法进行研究。提出新的简单有效的两阶段识别方法进行参数辨识研究。通过数值仿真与周期性加载试验相结合方法对所提方法进行验证。结果表明，参数识别方法可准确有效识别出 O型钢丝绳隔振器模型参数，且试验迟滞曲线与识别模型迟滞曲线吻合较好。