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郑伟玲在Composite Structures上发表Tailoring of AP-PLY composite laminates for improved performance in the presence of delaminations
发布时间:2019年09月26日 10:52 作者: 点击量:

文章题目:Tailoring of AP-PLY composite laminates for improved performance in the presence of delaminations

作者:第一作者郑伟玲和通讯作者郑伟玲

摘要:A fibre placement architecture, Advanced Placed Ply (AP-PLY), has been shown to give significantly improved damage tolerance characteristics of composite structures. The behavior of delaminations resulting from low speed impact dam- age is of particular concern. Emphasis is placed on using developed methodology to expand current knowledge on the delamination response and optimization of simple AP-PLY composite structure. A proposed energy method to analyze the strain energy release rate (SERR) of an existing crack in a composite laminate, was applied to an AP-PLY beam structure. A step by step approach was devel- oped to obtain the SERR of a crack that grows in regions of variable stiffness. The analytical SERR determined when two materials are used in sequence, sets the stage for optimization of AP-PLY composite laminates to tailor stiffness and minimize SERR. The results show promise in providing designs where the stiffness is altered so that delamination growth is delayed.

关键词:AP-PLY composite laminate, Delamination, Energy release rate, Optimization

发表的期刊:Composite Structures

发表时间:2019.02

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