Ultimate strength of free-edge composite laminates under tensile loading: A limit analysis approach
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- 作者：Oualid Limam ; Gilles Foret and Alain Ehrlacher
- 关键词：A. Laminates ; B. Delamination ; C. Laminate mechanics ; Limit analysis
- 刊名：Composites Part B: Engineering
- 出版年：2006
- 出版时间：June-July 2006
- 年：2006
- 卷：37
- 期：4-5
- 页码：286-291
- 全文大小：183 K
文摘
An ultimate failure criterion is proposed to predict strength and failure mode of composite laminates under a tensile loading. The upper bound theorem of limit analysis is used to approximate the ultimate load capacity for composite laminates and identify different collapse mechanisms. The present model is used to predict failures modes in plies and interfaces. Experimental results are presented and a comparison with theoretical predictions is made. Tests have been performed on several specimens of various lay-ups. A thickness effect on delamination is observed as well.