弹性体材料应变率相关力学行为模型  

Strain Rate-related Mechanical Behavior Model of Elastomer Material

作　　者：段宇星[1] 杨强[1] 赵苗苗[1] 苏渤[1] DUAN Yuxing;YANG Qiang;ZHAO Miaomiao;SU Bo(Aircraft Strength Research Institute of China,Xi’an 710065,China)

机构地区：[1]中国飞机强度研究所,陕西西安710065

出　　处：《橡胶工业》2020年第12期899-903,共5页China Rubber Industry

基　　金：航空科学基金资助项目(2017ZF23)。

摘　　要：研究弹性体材料应变率相关力学行为模型。对弹性体材料在单轴拉伸情况下进行受力分析,得到应力与应变能之间的关系,并在热力学分析的基础上研究材料的内禀时间变量。将内禀时间变量与广义maxwell模型相结合得到表达弹性体材料粘性的模型,并将此模型与Mooney-Rivlin超弹性模型结合建立弹性体材料应变率相关力学行为模型。分析表明,模型中的各项参数与物理事实相符,该模型在减震和缓冲领域具有工程应用价值。The strain rate-related mechanical behavior model of elastomer materials was studied.The force analysis of elastomer materials under uniaxial tension was carried out to obtain the relationship between stress and strain energy,and the intrinsic time variable of the material was studied on the basis of thermodynamic analysis. The intrinsic time variable was combined with the generalized maxwell model to obtain a model that expressed the viscosity of elastomeric materials,and this model was combined with the Mooney-Rivlin hyperelastic model to establish the strain rate-related mechanical behavior model of elastomeric materials. The analysis showed that the parameters in the model were consistent with the physical facts,and this model had engineering application value in the field of shock absorption and cushioning.

关 键 词：弹性体材料 广义Maxwell模型 应变率 内禀时间 超弹性 

分 类 号：TQ330.12[化学工程—橡胶工业]