Predictions of elastic property on 2.5D C/SiC composites based on numerical modeling and semi-analytical method

被引：35
作者：
Chen, Liangjia [1 ]
Yao, Xuefeng [1 ]
Cen, Song [1 ,2 ]
机构：
[1] Tsinghua Univ, Sch Aerosp Engn, Dept Engn Mech, AML, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Sch Aerosp Engn, Ctr High Performance Comp, Beijing 100084, Peoples R China
来源：
COMPOSITES PART B-ENGINEERING | 2015年 / 74卷
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
Ceramic matrix composites; Mechanical properties; Analytical modeling; Finite element analysis (FEA); Representative volume element (RVE); BOUNDARY-CONDITIONS; UNIT-CELLS; ELEMENT;
D O I：
10.1016/j.compositesb.2015.01.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, the predictions of elastic constants of 2.5D (three-dimension angle-interlock woven) continue carbon fiber reinforced silicon carbide (C/SiC) composites are studied by means of theoretical model and numerical simulation. A semi-analytical method expressing elastic constants in terms of microstructure geometrical parameters and constitute properties has been proposed. First, both the geometrical model of the 2.5D composite and the representative volume element (RVE) in both micro- and meso-scale are proposed. Second, the effective elastic properties of the RVE in 2.5D C/SiC composites are obtained using finite element method (FEM) simulation based on energy equivalent principle. Finally, the remedied spatial stiffness average (RSSA) method is proposed to obtain more accurate elastic constants using nine correction factor functions determined by FEM simulations, also the effects of geometrical variables on mechanical properties in 2.5D C/SiC composites are analyzed. These results will play an important role in designing advanced C/SiC composites. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：53 / 65
页数：13
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