三维五向编织复合材料强度的有限元分析  

Finite Element Analysis for Strength of Three-Dimensional Five-Directional Braided Composites

作　　者：李金超[1] 陈利[1] 邢静忠[2] 

机构地区：[1]天津工业大学复合材料研究所,天津市和教育部共建先进纺织复合材料重点实验室,天津300160 [2]天津工业大学机械电子学院,天津300160

出　　处：《宇航材料工艺》2010年第5期37-39,46,共4页Aerospace Materials & Technology

基　　金：天津市应用基础及前沿技术研究计划(08JCZDJC24400);新世纪优秀人才支持计划(NCET-05-0254)

摘　　要：在已有三维五向编织复合材料单胞实体模型的基础上,基于等应变假设和最大应力失效准则,采用3D有限元法建立了三维五向编织复合材料的拉伸强度有限元分析模型。利用该模型计算了试件的拉伸强度,与现有实验数据进行对比,吻合较好。数值模拟表明:三维五向编织复合材料主要的拉伸失效形式为轴纱的正应力破坏,与已有文献的观测结果一致。On the basis of the established 3D unit cell model of 3-dimensional（3D） five-directional braided composites,a tensile strength numerical model was proposed via 3D finite element analysis（FEA） compared with Iso-strain assumption and maximum stress failure criteria.The predictive strength was in good agreement with available experimental data,which demonstrated the applicability of the presented model.The numerical results show that the main failure modes of 3D five-directional braided composites are tension of the axial yarn,which are consistent relevant with experimental results.

关 键 词：三维五向 编织复合材料 有限元分析 强度 

分 类 号：TB332[一般工业技术—材料科学与工程]