遗传算法在橡胶超弹性材料参数反求中的应用  

Applying Genetic Algorithm to Inversion of Parameters for Rubber's Hyperelastic Material

作　　者：周兵[1] 袁昆明 刘阳毅 沈川 ZHOU Bing;YUAN Kunming;LIU Yangyi;SHEN Chuan(State Key Laboratory of Advanced Design and Manufacture for Vehicle Body,Hunan University,Changsha 410082,China;SANY Car Hoisting Machinery Co.,Ltd.,Changsha 410600,China)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]三一汽车起重机械有限公司,长沙410600

出　　处：《机械科学与技术》2024年第4期553-558,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金面上项目(51875184);湖南省自然科学基金面上项目(2019JJ40025)。

摘　　要：将优化算法与有限元仿真分析相结合可以对橡胶的材料参数进行反求,该方法基于一款叠层橡胶弹簧的试验数据,并选用Mooney-Rivlin超弹性本构模型。在参数反求的过程中,为解决传统遗传算法出现的早熟、稳定性差以及收敛速度慢的问题,将编码方式改为实数编码,并在算法中引入精英保留策略和自适应的交叉与变异概率。将根据改进遗传算法反求得到的刚度特性曲线与试验结果进行对比,发现二者具有很好的一致性,表明通过反求得到的材料参数能准确地对橡胶材料的力学性能进行描述。The combination of optimization algorithm with the finite element simulation analysis can reverse the parameters of rubber materials.This method is based on the experimental data of a laminated rubber spring,and the Mooney-Rivlin hyperelastic constitutive model is selected.In the process of parameter inversion,in order to solve the problem of prematurity,poor stability and slow convergence of the traditional genetic algorithm,the coding method is changed into real number coding,and the elite retention strategy,adaptive crossover,mutation probability are also introduced into the algorithm.The stiffness characteristic curve obtained with the improved genetic algorithm is compared with the experimental results,which are in good agreement with the stiffness characteristic curve,indicating that the inversed parameters can accurately describe the mechanical properties of rubber materials.

关 键 词：叠层橡胶弹簧 超弹性本构模型 参数反求 遗传算法 

分 类 号：U463.334.5[机械工程—车辆工程]