摘要
基于曲线分解的思想,将动态恢复力-位移曲线分解为非线性弹性力-位移曲线和椭圆曲线,建立描述金属橡胶迟滞力学性能的非线性弹簧-粘性阻尼单元模型,利用阻尼耗能相等的原理进行参数识别.对圆环形金属橡胶进行动态实验测试,以验证理论模型的正确性.结果表明,理论曲线与实验曲线的变化趋势较为一致,理论模型可以较好地描述金属橡胶的迟滞力学特性.此外,将金属橡胶分解为非线性弹簧单元和粘性阻尼单元,仿真金属橡胶的迟滞力学特性.仿真结果表明,该方法具有较好的仿真精度.
Based on the idea of curve decomposition,the dynamic restoring force-displacement curve was decomposed into nonlinear elastic force-displacement curve and elliptic curve.A nonlinear spring viscous damping element model to describe the hysteretic mechanical properties of metal rubber was established.The principle of equal damping energy was used to parameter identification.In order to verify the accuracy of the theoretical model,the dynamic test of ring-shaped metal rubber was carried out.The results showed that the change trend of the theoretical curve and the experimental curve was consistent.This indicated that theoretical model could describe the hysteretic properties of metal rubber better.In addition,the metal rubber was decomposed into nonlinear spring element and viscous damping element to simulate the hysteresis characteristics of metal rubber.The simulation results showed that the simulation accuracy was great.
作者
吴瑞先
阮仕鑫
吴芳
薛新
陈小超
WU Ruixian;RUAN Shixin;WU Fang;XUE Xin;CHEN Xiaochao(Institute of Metal Rubber&Vibration Noise,School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou,Fujian 350108,China;School of Mechanical Engineering,Anhui Institute of Information Technology,Wuhu,Anhui 241000,China)
出处
《福州大学学报（自然科学版）》
CAS
北大核心
2023年第1期83-88,共6页
Journal of Fuzhou University(Natural Science Edition)
基金
国家自然科学基金资助项目(12002088,52175162)
福建省自然科学基金资助项目(2020J05103)。
关键词
金属橡胶
力学模型
参数识别
有限元仿真
metal rubber
mechanical model
parameter identification
finite element simulation
