三维角联锁机织复合材料三点弯曲疲劳的细观结构效应

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (3): 13-17.

三维角联锁机织复合材料三点弯曲疲劳的细观结构效应

杨格^*, 潘忠祥

东华大学纺织学院,上海201620

收稿日期:2013-05-22 出版日期:2014-03-28 发布日期:2021-09-17
作者简介:杨格(1988-),女,硕士研究生,主要从事纺织复合材料冲击动力学研究,yangge0910@gmail.com。

THE INFLUENCE OF MICROSTRUCTURE OF 3D ANGLE-INTERLOCK WOVEN COMPOSITE ON THE FATIGUE BEHAVIOR UNDER THREE-POINT BENDING

YANG Ge^*, PAN Zhong-xian

College of textile, Dong Hua University, Shanghai 201620, China

Received:2013-05-22 Online:2014-03-28 Published:2021-09-17

摘要/Abstract

摘要： 依据层层接结三维角联锁机织复合材料的结构特点,建立能真实反映细观结构特征的大型精细实体几何结构模型;基于非弹性滞后能疲劳破坏准则,用有限元法计算三维角联锁机织复合材料在三点弯曲低周交变循环载荷下的变形和刚度降解,揭示疲劳过程中三维角联锁机织复合材料内部应力分布特征和变形特征,分析纱线与树脂的破坏机理,阐述该复合材料在循环载荷下发生疲劳破坏的结构效应。结果表明,经纱在疲劳过程中承担大部分的载荷,且不同的组分呈现不同的破坏扩展过程。本文研究结果和研究方法将可进一步扩展至三维机织复合材料工程结构设计。

关键词: 三维角联锁机织复合材料, 三点弯曲, 疲劳, 结构效应, 有限元分析

Abstract: This paper presents the finite element simulation of 3D angle-interlock woven composite(3DAWC) undergoing three-point bending cyclic loading. The finite element solid model was built in accordance with the real structure of layer-to-layer 3DAWC. Based on inelastic hysteresis energy fatigue damage criterion, deformation and stiffness degradation of 3DAWC under three-point bending cyclic loading were caculated by FEM. The interior deformation and stress distribution characterisics of 3DAWC during the fatigue process were anaylsed and it was found that the most of the load was carried by warp yarns.The different failure mechanisms of yarns and resin were also discussed and the influence of microstructure was discovered. The results and research method can be applied to engineering structure design of 3D woven composite.

Key words: 3DAWC, three-point bending, fatigue, structural effect, FEA

中图分类号:

TB332

杨格, 潘忠祥. 三维角联锁机织复合材料三点弯曲疲劳的细观结构效应[J]. 复合材料科学与工程, 2014, 0(3): 13-17.

YANG Ge, PAN Zhong-xian. THE INFLUENCE OF MICROSTRUCTURE OF 3D ANGLE-INTERLOCK WOVEN COMPOSITE ON THE FATIGUE BEHAVIOR UNDER THREE-POINT BENDING[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(3): 13-17.

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