Compressive fatigue limit of impact damaged composite laminates

被引：27

作者：

Butler, R. ^{[1
]}

Almond, D. P. ^{[1
]}

Hunt, G. W. ^{[1
]}

Hu, B. ^{[1
]}

Gathercole, N. ^{[1
]}

机构：

[1] Univ Bath, Dept Mech Engn, Bath BA2 7AY, Avon, England

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2007年 / 38卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

delamination; buckling; fatigue; analytical modelling;

D O I：

10.1016/j.compositesa.2006.04.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new analytical model for predicting the compressive fatigue limit strain of composite laminates which contain barely visible impact damage (BVID) is presented. The model represents the complex damage morphology as a single, circular delamination, and calculates the strain at which thin-film buckling of the circular region of delaminated plies occurs. The fatigue limit strain is defined as the strain at which the strain energy release rate for a thin post-buckled strip of the delaminated plies is equal to the critical Mode I value (G(1C)) for the resin. The model predicts a "critical" depth at which propagation of damage during fatigue is likely to occur. Results obtained using the model are compared with two sets of experimental results, and show agreement of fatigue limit strain to within 4% of the experimental value. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1211 / 1215

页数：5

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