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.
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页码：657 / 665
页数：9
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