A cell model study of crazing and matrix plasticity in rubber-toughened glassy polymers

被引：13

作者：

Seelig, Th. ^{[1
]}

Van der Giessen, E. ^{[2
]}

机构：

[1] Fraunhofer Inst Mech Mat, D-79108 Freiburg, Germany

[2] Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2009年 / 45卷 / 03期

关键词：

Glassy polymers; Rubber-toughening; Shear yielding; Crazing; Cohesive surface; Cell model; DEFORMATION; MICROMECHANICS; CRACK; ZONE;

D O I：

10.1016/j.commatsci.2008.05.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The competition between crazing and matrix shear yielding in rubber-toughened glassy polymers is investigated by detailed finite element simulations. To this end the microstructure is represented by an axisymmetric unit cell of glassy matrix containing a single cavitated rubber particle which is modeled as a void. The behavior of the matrix material is described in the framework of finite strain viscoplasticity, while a cohesive surface model is employed for crazing. The influence of the matrix yield behavior, the craze response, the rubber content, and the overall loading state are analyzed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：725 / 728

页数：4

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