Multi-directional stiffness degradation induced by matrix cracking in composite laminates

被引：15

作者：

Duan, X ^{[1
]}

Yao, WX ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Dept Aircraft Engn, Nanjing 210016, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2002年 / 24卷 / 2-4期

关键词：

matrix crack; stiffness degradation; matrix crack saturation state; fatigue damage;

D O I：

10.1016/S0142-1123(01)00066-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A model was developed for predicting the stiffness degradation of fiber reinforced plastics (FRP), with ply configuration [0(m)/+/-0(n)](s), induced by matrix cracking under in-plane tension. The model assumes that the cracks in off-axis plies are uniformly distributed and a damage variable D is defined. Based on the theory of fracture mechanics, the elastic moduli of cracked matrix are obtained and indicated by the damage variable D, then the reduction of elastic moduli of laminates caused by the matrix cracks was studied. Comparison with experimental values for the glass/epoxy [90(3)/0](s), [0/90](s) and [0/+/-45](s) laminates shows good agreement with the theoretical prediction given by the presented model. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：119 / 125

页数：7

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