Theoretical prediction on the mechanical properties of 3D braided composites using a helix geometry model

被引：51
|
作者：
Jiang, Lili [1 ]
Zeng, Tao [1 ]
Yan, Shi [1 ]
Fang, Daining [2 ]
机构：
[1] Harbin Univ Sci & Technol, Dept Engn Mech, Harbin 150080, Peoples R China
[2] Peking Univ, Dept Mech & Aerosp Technol, Beijing 100871, Peoples R China
来源：
COMPOSITE STRUCTURES | 2013年 / 100卷
基金：
中国国家自然科学基金;
关键词：
Helix geometry model; 3D braided composites; Effective elastic properties; Strength; FINITE-ELEMENT; TRANSVERSE; MICROSTRUCTURE;
D O I：
10.1016/j.compstruct.2013.01.016
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In our previous work, we have established a three-dimensional (3D) finite element model (FEM) which precisely simulated the spatial configuration of the braiding yarns. This paper presents a theoretical model based upon the helix geometry unit cell for prediction of the effective elastic constants and the failure strength of 3D braided composites under uniaxial load through the stiffness volume average method and Tsai-Wu polynomial failure criterion. Comparisons between the theoretical and experimental results are conducted. The theoretical results show that the braid angle has significant influences on the mechanical properties of 3D braided composites. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：511 / 516
页数：6
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