复合材料L型端框的失效行为

发布时间：2018-05-05 00:24

本文选题：复合材料 + L型端框　；参考：《复合材料学报》2017年08期

【摘要】：本文将某典型复合材料结构舱体的L型端框简化为单点连接的L型端框试件,通过试验和仿真分析,对试件拉伸载荷工况下的失效形式和承载能力进行了研究。结果表明,拉伸载荷工况下,L型端框失效形式以分层和基体破坏为主,试验与仿真分析承载力偏差为10.1%,具有良好的一致性。依据研究结果,对复合材料L型端框设计进行改进,通过试验发现,连接点局部粘接金属垫片可以有效提升复合材料L型端框的拉伸承载能力。本文的研究结果可作为复合材料L型端框设计的参考。
[Abstract]:In this paper, the L-shaped end frame of a typical composite structure cabin is simplified as a single-point connected L-shaped end-frame specimen. The failure mode and load-carrying capacity of the specimen under tensile loading are studied by means of test and simulation analysis. The results show that delamination and matrix failure are the main failure modes under tensile loading, and the deviation of bearing capacity between test and simulation is 10.1, which shows good consistency. According to the research results, the design of L end frame of composite material is improved. It is found by experiment that the tensile bearing capacity of L end frame of composite material can be effectively enhanced by local bonding of metal gasket. The results of this paper can be used as a reference for the design of L-shaped end frame of composite materials.
【作者单位】：上海宇航系统工程研究所;南京航空航天大学航空宇航学院;
【分类号】：TB33

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