Computation of energy release rates for kinking cracks based on virtual crack closure technique

被引：0
|
作者：
Xie, D [1 ]
Waas, AM
Shahwan, KW
Schroeder, JA
Boeman, RG
机构：
[1] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA
[2] DaimlerChrysler Corp Auburn Hills, Sci Labs, Auburn Hills, MI 48326 USA
[3] GM Corp, Ctr Res & Dev, Warren, MI 48090 USA
[4] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA
来源：
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES | 2004年 / 6卷 / 06期
关键词：
kinking crack; virtual crack closure technique; energy release rate;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A numerical method based on the virtual crack closure technique (VCCT) [Rybicki and Kanninen (1977)] and in conjunction with the finite element (FE) method is presented to compute strain energy release rates for cracks that kink. The method partitions the strain energy release rate and provides an efficient means to compute values of the mode I (G(I)) and mode II (G(II)) energy release rate at the tip of a kinking crack. The solution procedure is shown to be computationally efficient and operationally simple, involving only the nodal forces and displacements near the crack tip. Example problems with kinking cracks in a homogeneous material, and a layered two constituent material are presented to illustrate the current approach.
引用
收藏
页码：515 / 524
页数：10
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