Prediction of the failure locus of C/PEEK composites under transverse compression and longitudinal shear through computational micromechanics

被引：119

作者：

Totry, Essam ^{[1
]}

Gonzalez, Carlos ^{[1
,2
]}

LLorca, Javier ^{[1
,2
]}

机构：

[1] Univ Politecn Madrid, Dept Ciencia Mat, ETS Ingenieros Caminos, E-28040 Madrid, Spain

[2] Inst Madrileno Estudios Avanzados Mat IMDEA Mat, ETS Ingenieros Caminos, Madrid 28040, Spain

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2008年 / 68卷 / 15-16期

关键词：

Polymer-matrix composites; Mechanical properties; Modeling; Failure criterion;

D O I：

10.1016/j.compscitech.2008.07.011

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The potential of computational micromechanics to predict the failure locus of a unidirectional C/PEEK composite subjected to transverse compression and longitudinal shear was established. Numerical simulations were compared with the experimental results of Vogler and Kyriakides [Vogler TJ, Kyriakides S. Inelastic behavior of an AS4/PEEK composite under combined transverse compression and shear. Part 1: Experiments. Int J Plasticity 1999:15:783-806], which contain detailed information of the matrix and fiber properties as well as the failure micromechanisms during multiaxial loading. Analyses were based in the finite element analysis of a three-dimensional representative volume element of the lamina microstructure and included the main deformation and failure mechanisms observed experimentally, namely matrix shear yielding and interface decohesion. In addition, the numerical predictions of the failure locus for composites with strong and weak interfaces were compared with those obtained by current phenomenological failure models to establish the accuracy and range of validity of these criteria. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3128 / 3136

页数：9

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