航空材料学报2011，Vol.31Issue(6)：73-80,8.DOI:10.3969/j.issn.1005-5053.2011.6.013
含界面脱粘三维五向编织复合材料单向拉伸损伤失效机理研究
Damage and Failure Mechanism Analysis of 3D Five-Directional Braided Composites with Interface Debonding under Unidirectional Tension
摘要
Abstract
A nonlinear finite element model with interface phase was presented to simulate the damage and failure of 3 D five-directional braided composites under unidirectional tension. Tsai-Wu and Mises criterions were considered for initial damage prediction of yarns and matrix. Quads failure criteria was adopted to identify the onset of debonding of the interface. An anisotropic damage model was used to analyze the damage evolution of yarns those damage modes were characterized by Murakami' s damage tensor. In addition, a I-sotropic damage model was used to matrix and interface. The whole process of damage initiation, propagation and catastrophic failure of five-directional braided composites with typical braided angle were simulated in detail. The damage mechanisms were revealed in the simulation process and the strength of the braided composites was predicted from the calculated stress-strain curve. The numerical results show good consistent with experiment results, which verifies that the proposed simulation method is very useful for the evaluation of damage mechanisms of 3D five-directional braided composites.关键词
三维五向/编织复合材料/界面脱粘/失效机理/强度预测Key words
3D five-directional/ braided composites/ interface debonding/ failure mechanism/ strength prediction分类
通用工业技术引用本文复制引用
张超,许希武,郭树祥..含界面脱粘三维五向编织复合材料单向拉伸损伤失效机理研究[J].航空材料学报,2011,31(6):73-80,8.基金项目
国家自然科学基金(10672075) （10672075）
