计算力学学报2012，Vol.29Issue(5)：783-788,6.
三维编织复合材料渐进损伤的非线性模型及强度分析
A nonlinear progressive damage model and strength analysis for 3D braided composites
摘要
Abstract
A representative volume unit cell for 3D four-step braided composites with the periodic bounda- ry condition was established to simulate the progressive damage behaviors. The Eshelby-Mori-Tanaka method was applied to calculate the stiffness matrix of damaged materials. In order to alleviate the mesh dependence, the size of the finite element and the crack were considered in the damage evolution equa- tion. The non-linear stress-strain relationship and the critical tensile strength were obtained through nu- merical simulation, and the failure mechanism of composites with large braiding angle was also dis- cussed. It is shown that the main failure modes of composites with large braiding angle are matrix crack- ing, transverse tensile and shear failure of yarns. The results in the paper agree well with the experiments in the literature.关键词
三维编织复合材料/渐进损伤/强度/数值模拟/有限元Key words
3D braided composites progressive damage strength/numerical simulation/FEM分类
通用工业技术引用本文复制引用
韩小进,孙慧玉..三维编织复合材料渐进损伤的非线性模型及强度分析[J].计算力学学报,2012,29(5):783-788,6.基金项目
国家自然科学基金 （）
教育部留学回国人员科研启动基金资助项目. （）
