Numerical simulation of strain-rate dependent transition of transverse tensile failure mode in fiber-reinforced composites

被引：33
作者：
Koyanagi, Jun [1 ]
Sato, Yukihiro [2 ]
Sasayama, Toshiki [2 ]
Okabe, Tomonaga [2 ]
Yoneyama, Satoru [3 ]
机构：
[1] Tokyo Univ Sci, Dept Mat Sci & Technol, Katsushika Ku, Tokyo 1250051, Japan
[2] Tohoku Univ, Dept Aerosp Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan
[3] Aoyama Gakuin Univ, Dept Mech Engn, Chuo Ku, Sagamihara, Kanagawa 2525258, Japan
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2014年 / 56卷
关键词：
Polymer-matrix composites (PMCs); Debonding; Damage mechanics; Finite element analysis (FEA); POLYMER COMPOSITES; NONLOCAL DAMAGE; BEHAVIOR; STRENGTH; SOLIDS; MATRIX; PREDICTION; CRITERIA; FRACTURE; EPOXY;
D O I：
10.1016/j.compositesa.2013.10.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study numerically simulates strain-rate dependent transverse tensile failure of unidirectional composites. The authors' previous study reported that the failure mode depends on the strain rate, with an interface-failure-dominant mode at a relatively high strain rate and a matrix-failure-dominant mode at relatively low strain rate. The present study aims to demonstrate this failure-mode transition by a periodic unit-cell simulation containing 20 fibers located randomly in the matrix. An elasto-viscoplastic constitutive equation that involves continuum damage mechanics regarding yielding and cavitation-induced brittle failure is used for the matrix. A cohesive zone model is employed for the fiber-matrix interface, considering mixed-mode interfacial failure. For the results, the relationship between failure modes and the strain rate is consistent with the authors' previous studies. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：136 / 142
页数：7
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