Cohesive element for analysis of delamination growth under arbitrary mixed-mode II and II failure condition

被引：0
|
作者：
Kondo A. [1 ]
Suematsu H. [1 ]
Aoki Y. [1 ]
Nagashima T. [1 ]
机构：
[1] Department of Mechanical Engineering, Sophia University, Chiyoda-ku, Tokyo, 102-8554
来源：
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A | 2010年 / 76卷 / 765期
关键词：
Composite material; Delamination; Finite element method; Fracture mechanics;
D O I：
10.1299/kikaia.76.557
中图分类号：
学科分类号：
摘要：
Novel cohesive element which can deal with non-self-similar crack growth under mixed-mode II and III failure condition is proposed. The local coordinate system based on the crack front direction is determined in terms of relative displacement of the cohesive elements. Traction-relative displacement relation of the element is determined as a function of mode components calculated on the local coordinate system. This formulation allows us to simulate delamination growth when the non-self-similar crack growth occurs and the fracture toughness depends on the mode ratio. The numerical examples revealed that the crack growth strongly depends on its history when the mode II and III fracture toughness is different and the present formulation is valid even for the simulation of such history dependent crack growth.
引用
收藏
页码：557 / 563
页数：6
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