非线性粘弹性材料的一个瞬时弹性本构关系  

An Instantaneous Elastic Constitutive Relation for Nonlinear Viscoelastic Materials

作　　者：赵荣国[1] 张淳源[1] 

机构地区：[1]中国工程物理研究院,北京100088

出　　处：《吉首大学学报》2001年第4期19-22,共4页

基　　金：国家自然科学基金资助项目 (19772 0 45 )

摘　　要：运用非线性粘弹性本构理论中的弹性回复对应原理 ,得到了一个简单的适用于非线性粘弹性材料的瞬时弹性本构关系 .结合实例分析 ,验证了由该瞬时弹性本构所表征的非线性粘弹性本构关系能对非线性粘弹性材料的力学行为进行合理描述的结论 .In this paper, a simple instantaneous elastic constitutive relation for nonlinear viscoelastic materials is obtained by using the elasticity recovery correspondence principle in nonlinear viscoelastic constitutive theory.The result that the nonlinear viscoelastic constitutive relation being marked by the instantaneous elastic constitutive relation can correctly describe the mechanics behaviors of nonlinear viscoelastic materials is verified by comparison between the theoretic calculated results and experimental data about the experiments under different strain rate levels for improved polypropylene.

关 键 词：瞬时弹性本构关系 非线性粘弹性本构关系 弹性回复对应原理 非线性粘弹性材料 粘弹性力学 

分 类 号：TB301[一般工业技术—材料科学与工程] O345[理学—固体力学]