隔振器橡胶材料本构模型参数获取及冲击性能仿真  

Parameters acquisition of the constitutive model of rubber material used in isolators and the impact performance simulation

作　　者：王遥遥 罗竹辉 汪涵 周熙盛 王虎 陈诗璐 WANG Yaoyao;LUO Zhuhui;WANG Han;ZHOU Xisheng;WANG Hu;CHEN Shilu(College of Mechanical Engineering,Hunan University of Technology,Zhuzhou 412007,China;Hunan Honghui Technology Corporation,Zhuzhou 412007,China)

机构地区：[1]湖南工业大学机械工程学院,湖南株洲412007 [2]湖南弘辉科技有限公司,湖南株洲412007

出　　处：《振动与冲击》2025年第6期130-136,共7页Journal of Vibration and Shock

基　　金：湖南省教育厅科学研究项目重点项目(22A0417)。

摘　　要：由于橡胶隔振器样件制备和冲击性能测试周期长、费用高,需要在样件制备前进行仿真分析以评估结构和材料设计或选型的可行性。参照隔振器跌落式冲击测试方法,在LS-DYNA软件中建立隔振器冲击性能仿真分析有限元模型,选择Mooney-Rivlin-Maxwell模型作为橡胶黏超弹性本构模型。为了获取冲击工况下橡胶材料的本构模型参数,将隔振器用橡胶材料制成球体,开展橡胶球体与钢板冲击试验与有限元仿真分析。建立广义回归神经网络(generalized regression neural network,GRNN),使用优化后的GRNN模型和试验数据对橡胶材料本构模型参数进行预测。开展橡胶隔振器冲击仿真分析计算,仿真计算与测试结果较为接近,建立的有限元仿真分析模型可以用来评估隔振器的冲击性能,为开展橡胶隔振器冲击性能仿真分析和冲击工况下橡胶材料本构模型参数的获取提供一种参考的方法。Due to the long lead time and high cost for the preparation of rubber isolator prototypes and impact performance testing,the simulation analysis is needed to evaluate the feasibility of the design or the selection of structure and material before the preparation of prototypes.Referring to the drop impact test method for isolators,a finite element model for the impact performance simulation analysis of vibration isolators was established in LS-DYNA,and the Mooney-Rivlin-Maxwell model was chosen as the rubber visco-hyperelastic constitutive model.In order to obtain the parameters of the constitutive model of the rubber material under the impact condition,the rubber material used in the isolator was made into a sphere,and the impact test and finite element simulation analysis of the rubber sphere and steel plate were carried out.A generalized regression neural network(GRNN)was established,and the optimized GRNN model and test data were used to predict the parameters of the constitutive model of rubber material.The simulation results are close to the test results,and the established finite element simulation and analysis model can be used to evaluate the impact performance of the isolator,which provides a reference method to carry out the simulation and analysis of the impact performance of rubber isolators and the acquisition of parameters of the constitutive model of rubber material under impact conditions.

关 键 词：广义回归神经网络 有限元法 本构模型 黏超弹性 橡胶隔振器 冲击特性 

分 类 号：TB122[理学—工程力学]