由单阶跃应变试验预测两阶跃应力松弛  

PREDICTION OF THE STRESS-RELAXATION IN DOUBLESTEP STRAIN FROM THAT IN SINGLESTEP STRAIN

作　　者：万传寅[1] 

机构地区：[1]华南理工大学工程力学系

出　　处：《华南理工大学学报（自然科学版）》1995年第4期53-58,共6页Journal of South China University of Technology(Natural Science Edition)

摘　　要：从分析非线性粘弹性体单阶跃应力松弛函数的性质入手，指出内蕴时标对应变历程的依赖关系，从而修正了两阶跃应力松弛的表达式。在八种不同情况下，这些表达式的计算曲线与两阶跃应变试验的实测点都很吻合。An analysis of the properties of the stress--relaxation function in singlestep strain of a nonlinear viscoelastic system is made first,then the dependence of the intrinsic time scale on the strain histories is pointed out and the expression for the stress-relaxation in doublestep strain is modified. The results of the calculations are in good agreement with experiments for eight cases in doublestep strain histories.

关 键 词：粘弹性介质力学 应力松驰 阶跃应变 应变试验 

分 类 号：O345[理学—固体力学]