Decomposition of 3-D mixed-mode energy release rates using the virtual crack extension method

被引:12
|
作者
Davis, B. R. [1 ]
Wawrzynek, P. A. [2 ]
Hwang, C. G. [3 ]
Ingraffea, A. R. [1 ]
机构
[1] Cornell Univ, Sch Civil & Environm Engn, Ithaca, NY 14853 USA
[2] Fracture Anal Consultants Inc, Ithaca, NY USA
[3] Seoul Venture Univ, Dept Convergence Ind, Seoul, South Korea
关键词
Energy release rate; Finite-element analysis; Virtual crack extension; Crack growth; Delamination; Composites; STRESS INTENSITY FACTORS; DOMAIN INTEGRAL METHOD; CONSERVATION-LAWS; ANISOTROPIC MATERIALS; FRACTURE-MECHANICS; PART I; ELASTICITY; TENSION; SPECIMEN; PLANE;
D O I
10.1016/j.engfracmech.2014.08.014
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A technique was implemented for decomposing 3-D mixed-mode energy release rates using the Virtual Crack Extension (VCE) method. The technique uses a symmetric/anti-symmetric approach to decompose local crack-front displacements that are substituted into the global VCE energy release rate form. The subsequent expansion leads to the mixed-mode energy release rate expressions. As a result of the expansion, previously unaddressed modal-interaction coupling terms are found to impact the mixed-mode energy release rates. This development expands the VCE method's advantages over similar procedures when simulating arbitrary crack growth by providing the means to calculate both mixed-mode energy release rates and their variations. (C) 2014 Elsevier Ltd. All rights reserved.
引用
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页码:382 / 405
页数:24
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