Mullins’ effect in semicrystalline polymers: experiments and modeling

被引：0
作者：
A. D. Drozdov
J. deC. Christiansen
机构：
[1] Danish Technological Institute,Department of Mechanical and Manufacturing Engineering
[2] Aalborg University,undefined
来源：
Meccanica | 2011年 / 46卷
关键词：
Isotactic polypropylene; Cyclic deformation; Mullins’ effect; Viscoplasticity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Experimental data are reported on isotactic polypropylene in uniaxial cyclic tensile tests with various maximum strains at room temperature. It is demonstrated that polypropylene reveals all characteristic features (hysteresis of energy, damage accumulation, and strain-hardening) of the Mullins effect. Constitutive equations are derived for the viscoplastic behavior of semicrystalline polymers at three-dimensional deformations with small strains. Adjustable parameters in the stress–strain relations are found by fitting the observations. Numerical simulation shows that the model adequately predicts the viscoplastic response of polypropylene in uniaxial and biaxial cyclic tests.
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页码：359 / 370
页数：11
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