Effect of fiber arrangement on mechanical properties of short fiber reinforced composites

被引：67

作者：

Lei, H. F. ^{[2
]}

Zhang, Z. Q. ^{[1
]}

Liu, B. ^{[2
]}

机构：

[1] Inst High Performance Comp, Dept Engn Mech, Singapore 138632, Singapore

[2] Tsinghua Univ, Dept Engn Mech, AML, Beijing 100084, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2012年 / 72卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Short-fiber composites; Mechanical properties; Biomimetic composites; CARBON NANOTUBES; BIOLOGICAL-MATERIALS; STRENGTH; MATRIX; MODEL; DEFORMATION; COLLAGEN; SCIENCE; DESIGN; TISSUE;

D O I：

10.1016/j.compscitech.2011.12.011

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The present paper developed a three-dimensional (3D) "tension-shear chain" theoretical model to predict the mechanical properties of unidirectional short fiber reinforced composites, and especially to investigate the distribution effect of short fibers. The accuracy of its predictions on effective modulus, strength, failure strain and energy storage capacity of composites with different distributions of fibers are validated by simulations of finite element method (FEM). It is found that besides the volume fraction, shape, and orientation of the reinforcements, the distribution of fibers also plays a significant role in the mechanical properties of unidirectional composites. Two stiffness distribution factors and two strength distribution factors are identified to completely characterize this influence. It is also noted that stairwise staggering (including regular staggering), which is adopted by the nature, could achieve overall excellent performance. The proposed 3D tension-shear chain model may provide guidance to the design of short fiber reinforced composites. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：506 / 514

页数：9

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