A synergistic damage-mechanics analysis of transverse cracking in [±θ/904]s laminates

被引：60

作者：

Varna, J

Joffe, R

Talreja, R ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Aerosp Engn, Atlanta, GA 30332 USA

[2] Lulea Univ Technol, Div Polymer Engn, SE-97187 Lulea, Sweden

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2001年 / 61卷 / 05期

关键词：

composite materials; damage mechanics; transverse cracking; damage evolution; stiffness degradation;

D O I：

10.1016/S0266-3538(01)00005-7

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The deformational response of [+/- theta /90(4)](s) laminates under longitudinal tensile loading is treated by a synergistic approach that combines continuum damage mechanics (CDM) and micromechanics. The constraint of theta degrees plies on transverse cracks in 90 degrees plies is represented by a crack-opening displacement (COD) parameter in the CDM model and is expressed in terms of the ply properties and ply thickness ratios on the basis of a finite-element calculation. A methodology is proposed for predicting the laminate stiffness variations with crack density and applied strain (or stress) for various values of ply orientation B and is found to give good results. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：657 / 665

页数：9

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