橡胶减震器材料时变蠕变力学行为研究  

Research on time-depending creep mechanical behavior of rubber shock absorber material

作　　者：马永 赵世平 卢丙举 冷鼎鑫[3] MA Yong;ZHAO Shi-ping;LU Bing-ju;LENG Ding-xin(The 713 Research Institute of CSSC,Zhengzhou 450015,China;Henan Key Laboratory of Underwater Intelligence Equipment,Zhengzhou 450015,China;Department of Mechanical and Electrical Engineering,Ocean University of China,Qingdao 266003,China)

机构地区：[1]中国船舶集团有限公司第七一三研究所,河南郑州450015 [2]河南省水下智能装备重点实验室,河南郑州450015 [3]中国海洋大学机械电子工程学院,山东青岛266003

出　　处：《舰船科学技术》2021年第1期95-101,共7页Ship Science and Technology

摘　　要：橡胶减震器在使用过程中呈现时变蠕变特性,影响其工作性能及使用寿命。基于超弹力学及损伤力学理论,建立橡胶材料考虑损伤效应的唯象蠕变本构模型;根据试验结果,识别模型关键参数,开展材料本构模型与有限元模拟的相容性研究,构建橡胶减震器非线性时变蠕变数值模拟方法。采用Von Mises屈服准则来评估橡胶材料的蠕变残余变形,发展一种考虑永久变形的修正蠕变本构模型。研究成果可为橡胶减震器的时变性能分析及寿命预测提供理论基础。The rubber shock absorber presents time-depending creep characteristics in the use process,which affects its working performance and service life.Based on the theory of hyperelasticity and damage mechanics,the phenomenological creep constitutive model of rubber material considering damage effect is established;based on the test results,the key parameters of the model are identified;the compatibility between material constitutive model and finite element simulation is studied,and the nonlinear time-depending creep numerical simulation method of rubber shock absorber is constructed.Von Mises yield criterion is used to evaluate the residual creep deformation of rubber materials.A modified creep constitutive model considering permanent deformation is developed.The research results can provide theoretical basis for time-depending performance analysis and life prediction of rubber shock absorbers.

关 键 词：减震器 本构模型 蠕变 超弹 非线性数值模拟 

分 类 号：TG15[金属学及工艺—热处理]