Fatigue simulation for titanium/CFRP hybrid laminates using cohesive elements

被引：29

作者：

Yamaguchi, T. ^{[1
]}

Okabe, T. ^{[1
]}

Yashiro, S. ^{[2
]}

机构：

[1] Tohoku Univ, Dept Aerosp Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 7908577, Japan

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2009年 / 69卷 / 11-12期

关键词：

Hybrid composites; Fatigue; Delamination; Finite-element analysis; Cohesive zone model; FACESHEET CRACK-GROWTH;

D O I：

10.1016/j.compscitech.2009.04.020

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This paper presents a new numerical approach for predicting fatigue crack growth in fiber-metal laminate (FML). Cohesive elements are used to express the complicated damage consisting of transverse cracking, splitting, and interlaminar delamination. The damage growth in the cohesive elements due to cyclic loading is represented by the conventional damage-mechanics model. The simulation was applied to notched Ti/CFRP hybrid laminates of two stacking configurations. In both cases, the crack growth rate in the titanium layer and the delamination shape agreed well with experiments reported in the literature. Complementary analysis for crack extension in the metal sheet is performed out of consideration of the damage in internal FRP layers. The numerical results demonstrated that the underlying damage modes in the FRP layer must be taken into account to predict the fatigue crack growth at the metal layer in FMLs. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1968 / 1973

页数：6

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