基于试验数据识别的金属橡胶有限元仿真方法  

Finite Element Simulation Method of Metal Rubber Based on Tested Parameter Identification

作　　者：罗玛 张大义[2] 朱海雄[2] 马艳红[2,3] 洪杰[2,3] 

机构地区：[1]中国航发湖南动力机械研究所,湖南株洲412002 [2]北京航空航天大学能源与动力工程学院,北京100191 [3]先进航空发动机协同创新中心,北京100191

出　　处：《航空发动机》2017年第3期56-61,共6页Aeroengine

基　　金：国家自然科学基金(51475021;51475023)资助

摘　　要：金属橡胶工程应用分析常需要1种可以与商用有限元软件相结合,适用于复杂结构设计的快捷数值仿真方法。针对金属橡胶的有限元仿真问题,基于ANSYS软件,发展了基于试验数据识别的横向各向同性材料参数确定方法,并采用循环加载、模型更新的方法,实现了金属橡胶材料受压过程非线性力学特性的仿真计算。结果表明:该方法对立方体件在无约束状态下受压过程进行模拟时,相对误差在10%之内;安装约束使其刚度增大,仿真与试验结果相比规律吻合,刚度的误差在30%之内;环形金属橡胶件在径向受压时,仿真与试验测得刚度的相对误差在25%之内。During the metal rubber＇s （MR） engineering application, a numerical method with fast solving speed that is suitable for complex configurations is required. It is also hoped that the method could be combined with the commercial finite element software considering the engineers＂ requireme~. Aiming at solving the finite element simulation problems of MR, the paper developed a parameter identification method for the transverse isotropy materials based on the tested data. The nonlinear mechanical characteristics of MR during compression process were calculated through the looping loading and model updating method. The results reveal that the relative error between predicted and tested result of cubic MR model without constraint is less than 10% and less than 30% for cubic MR uuder constraint. The eonstraint also leads to larger stiffness of MR. The relative error of ring MR model under radial loading is holded within 25%.

关 键 词：金属橡胶 力学性能 有限元 仿真计算 复杂受力状态 

分 类 号：V257[一般工业技术—材料科学与工程]