A new phenomenological model for stress-softening in elastomers

被引：60
|
作者：
Zúñiga, AE [1 ]
Beatty, MF [1 ]
机构：
[1] Univ Nebraska, Dept Engn Mech, Lincoln, NE 68588 USA
来源：
ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK | 2002年 / 53卷 / 05期
关键词：
Mullins effect; stress-softening; damaged induced inelasticity; finite deformations; constitutive equations; elastomers; non-Gaussian network models; simple tension;
D O I：
10.1007/PL00022513
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A new phenomenological model for stress-softening of isotropic, incompressible hyperelastic rubberlike materials is presented. For any specified virgin material constitutive equation, the stress-softened material response due to microstructural damage is characterized by an exponential softening function that depends on the current magnitude of strain and its maximum previous value in a deformation of the virgin material. The theory is illustrated for a neo-Hookean material; and it is shown that results derived for two non-Gaussian molecular network material models compare most favorably with uniaxial extension data provided by others.
引用
收藏
页码：794 / 814
页数：21
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