基于分布位错方法对纤维增强复合材料的横观裂纹问题研究

王皓; 江晓禹

doi:10.21656/1000-0887.460153

基于分布位错方法对纤维增强复合材料的横观裂纹问题研究

doi: 10.21656/1000-0887.460153

王皓,
江晓禹^,

西南交通大学力学与航空航天学院，成都 610031

基金项目:

国家自然科学基金(12393782)

详细信息

作者简介:
王皓（2001—），男，硕士生(E-mail: 13274225158@163.com)；江晓禹（1965—），男，教授，博士，博士生导师（通信作者. E-mail: xiaoyujiang8@sina.com).

通讯作者:
江晓禹（1965—），男，教授，博士，博士生导师（通信作者. E-mail: xiaoyujiang8@sina.com).

中图分类号: O346
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- 文章访问数: 104
- HTML全文浏览量: 24
- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2025-08-27
- 修回日期: 2026-07-08
- 网络出版日期: 2026-09-24
- 刊出日期: 2026-09-01

Research on Transverse Crack Problems in Fiber-Reinforced Composites With the Distributed Dislocation Method

Wang Hao,
Jiang Xiaoyu^,

School of Mechanics and Aerospace Engineering, Southwest Jiaotong University,Chengdu 610031, P.R. China

Funds:

The National Science Foundation of China(12393782)

摘要

摘要: 在单轴拉伸载荷作用下，对于无限大平面内的纤维增强复合材料的基体裂纹与界面裂纹的相互作用问题，使用分布位错法进行研究，裂纹面用连续分布位错替代，将纤维增强复合材料模型转换为二维平面中含有圆形夹杂问题.根据叠加原理，将问题分为两个子问题，得到了基体裂纹尖端与界面裂纹的应力强度因子、应力场、界面处最大拉应力、基体裂纹与界面裂纹尖端的能量释放率.利用裂纹尖端最大能量释放率比值来判断裂纹扩展方向.结果表明，当夹杂位于基体裂纹尖端指向区域，夹杂对裂纹扩展起屏蔽作用，在其他区域，对基体裂纹扩展起增强作用.根据界面处最大拉应力判断，初步解释了界面裂纹产生的原因.当基体裂纹尖端指向界面裂纹尖端时，基体裂纹与界面裂纹会促进相互之间的扩展，两者距离越近，界面裂纹越容易扩展.
- 纤维增强复合材料 /
- 分布位错 /
- 应力强度因子 /
- 界面裂纹 /
- 基体裂纹
Abstract: Under uniaxial tensile loading, the interaction between matrix cracks and interfacial cracks in fiber-reinforced composites within an infinite plane medium was investigated with the distributed dislocation method (DDM). With crack surfaces represented as continuously distributed dislocations, the composite fracture problem was transformed into a 2D boundary-value problem containing circular elastic inhomogeneities. Based on the superposition principle, the problem was decomposed into 2 sub-problems. The stress intensity factors (SIFs), the stress fields, the maximum tensile stress at the interface, and the energy release rates at the tips of both the matrix crack and the interfacial crack were derived. The crack propagation direction was determined through comparison of the ratio of maximum energy release rates at the crack tips. The results demonstrate that, when inclusions are located in the region ahead of the matrix crack tip, they will exert a shielding effect on crack propagation. Conversely, inclusions in other regions will amplify the crack growth. The initiation of interfacial cracks is primarily attributed to the maximum tensile stress at the interface. When the matrix crack tip approaches the interfacial crack tip, mutual promotion of propagation will occur between both cracks, and the closer their proximity is, the more pronounced the interfacial crack propagation will be due to reduced resistance to debonding.
- fiber-reinforced composite /
- distributed dislocation /
- stress intensity factor /
- interfacial crack /
- matrix crack

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参考文献(27)

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文章访问数: 104
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基于分布位错方法对纤维增强复合材料的横观裂纹问题研究

doi: 10.21656/1000-0887.460153

作者简介:
王皓（2001—），男，硕士生(E-mail: 13274225158@163.com)；江晓禹（1965—），男，教授，博士，博士生导师（通信作者. E-mail: xiaoyujiang8@sina.com).

通讯作者:
江晓禹（1965—），男，教授，博士，博士生导师（通信作者. E-mail: xiaoyujiang8@sina.com).

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Research on Transverse Crack Problems in Fiber-Reinforced Composites With the Distributed Dislocation Method

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留言板

基于分布位错方法对纤维增强复合材料的横观裂纹问题研究

doi: 10.21656/1000-0887.460153

作者简介: 王皓（2001—），男，硕士生(E-mail: 13274225158@163.com)；江晓禹（1965—），男，教授，博士，博士生导师（通信作者. E-mail: xiaoyujiang8@sina.com).

通讯作者: 江晓禹（1965—），男，教授，博士，博士生导师（通信作者. E-mail: xiaoyujiang8@sina.com).

计量

出版历程

Research on Transverse Crack Problems in Fiber-Reinforced Composites With the Distributed Dislocation Method

计量

出版历程

目录

作者简介:
王皓（2001—），男，硕士生(E-mail: 13274225158@163.com)；江晓禹（1965—），男，教授，博士，博士生导师（通信作者. E-mail: xiaoyujiang8@sina.com).

通讯作者:
江晓禹（1965—），男，教授，博士，博士生导师（通信作者. E-mail: xiaoyujiang8@sina.com).