硅橡胶高应变率本构模型研究  

Study on High Strain Rate Constitutive Model of Silicone Rubber

作　　者：李占龙[1] 张正 宋勇[1] 秦园[1] 周俊贤 LI Zhan-long;ZHANG Zheng;SONG Yong;QIN Yuan;ZHOU Jun-xian(School of Vehicle and Traffic Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学车辆与交通工程学院,太原030024 [2]太原科技大学机械工程学院,太原030024

出　　处：《太原科技大学学报》2023年第5期389-395,共7页Journal of Taiyuan University of Science and Technology

基　　金：国家自然科学基金(52272401);山西省基础研究计划项目(202203021211185;20210302124444);贵州省科技计划项目(XTD[2022]015)。

摘　　要：针对原始ZWT本构模型在描述硅橡胶高应变率下的动态力学行为时参数难以恒定的问题,将对数律与幂函数律结合对原始ZWT本构模型进行修正,使用修正的ZWT-率相关本构模型描述硅橡胶在高应变率下的动态力学响应。结果表明,使用修正的ZWT-率相关本构模型能够精确快捷地描述硅橡胶在高应变率下的动态力学响应,得到的应力应变曲线和实验应力应变曲线高度吻合,其R-square值均在0.95以上。Aiming at the problem that the parameters of the original ZWT constitutive model were difficult to be constant when describing the dynamic mechanical behavior of silicone rubber at high strain rate,the logarithmic law and power function law were combined to modify the original ZWT constitutive model,and the modified ZWT-rate-dependent constitutive model was used to describe the dynamic mechanical response of silicone rubber at high strain rate.The results show that the modified ZWT-rate-dependent constitutive model can accurately and quickly describe the dynamic mechanical response of silicone rubber at high strain rates,and the obtained stress-strain curves are in good agreement with the experimental stress-strain curves,with R 2 values above 0.95.

关 键 词：硅橡胶 高应变率 修正本构模型 

分 类 号：O347.3[理学—固体力学]