Progressive damage analysis of double-layer variable thickness 3D woven composite scaled engine casing

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES
Kun Wang, Weiyi Kong, Liming Xu, Nan Zhang, Chao Li, Deng’an Cai, Guangming Zhou
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Abstract

Due to the excellent mechanical properties and strong design flexibility, the 3D woven composite engine casing shows great potential in high performance fields. This article adopted the method of double-layer weaving and adding yarn to achieve the variable thickness of the 3D woven composite engine casing. The purpose of this article is to study the compression performance and failure mechanism of this variable thickness casing in different thickness zones through experiments and numerical simulations to lay a foundation for future optimization and inclusiveness research on this casing with complex thickness changes. Three types of representative volume cells are established for progressive damage analysis. 3D-Hashin criteria and von-Mises stress criterion are used as damage criteria for yarns and matrix. The progressive damage process and the proportion of damage in the inner and outer layers of three types of 3D woven tubes under axial compression load are analyzed. Results show that the main failure modes of the three types of tubes are yarn-matrix compressive cracking along direction 3 and matrix failure. The damages are mostly concentrated in the warp bending area. The proportions of warp yarn damage in the inner and outer layers of three tubes are different.
双层变厚三维编织复合材料按比例发动机壳体的渐进损伤分析
三维编织复合材料发动机壳体具有优异的力学性能和较强的设计灵活性,在高性能领域显示出巨大潜力。本文采用双层编织和添加纱线的方法实现了三维编织复合材料发动机壳体的变厚度。本文旨在通过实验和数值模拟,研究这种可变厚度套管在不同厚度区域的压缩性能和失效机理,为今后对这种厚度变化复杂的套管进行优化和包容性研究奠定基础。为进行渐进损伤分析,建立了三种代表性体积单元。纱线和基体的损伤准则采用三维-哈欣准则和 von-Mises 应力准则。分析了三种三维编织管在轴向压缩载荷作用下的渐进损伤过程以及内外层的损伤比例。结果表明,三种编织管的主要破坏模式是纱线-基体沿方向 3 的压缩开裂和基体破坏。破坏主要集中在经纱弯曲区域。三种纱管内层和外层的经纱损坏比例不同。
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来源期刊
Journal of Composite Materials
Journal of Composite Materials 工程技术-材料科学:复合
CiteScore
5.40
自引率
6.90%
发文量
274
审稿时长
6.8 months
期刊介绍: Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).
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