Stress intensity factor analysis of a three-dimensional interface crack between dissimilar anisotropic materials
Stress intensity factor analysis of a three-dimensional interface crack between dissimilar anisotropic materials
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DOI：
10.1016/j.engfracmech.2006.12.027
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发表时间：
2007-11
影响因子：
5.4
通讯作者：
M. Nagai;T. Ikeda;N. Miyazaki
中科院分区：
文献类型：
--
作者：
M. Nagai;T. Ikeda;N. Miyazaki
提出了一种计算不同各向异性材料界面三维裂纹应力强度因子的新方法。本研究采用m积分法对SIFs进行模态分离。采用移动最小二乘法计算m积分。采用移动最小二乘法的m积分法，仅用有限元法的节点位移就能自动计算出SIFs。本文对一些典型的三维问题进行了SIFs分析。本文方法得到的数值结果与其他研究人员提出的结果非常吻合。此外，还分析了两种各向异性固体之间的单边裂纹、贯通裂纹和半圆裂纹在三维结构中的SIFs。
A new numerical method to calculate the stress intensity factors (SIFs) of a three-dimensional interface crack between dissimilar anisotropic materials was developed. In this study, the M-integral method was employed for mode separation of the SIFs. The moving least-square method was utilized to calculate the M-integral. Using the M-integral with the moving least-square method, SIFs can be automatically calculated with only the nodal displacements from the finite element method (FEM). Here, SIFs analyses of some typical three-dimensional problems are demonstrated. Excellent agreement was achieved between the numerical results obtained by the present method and the corresponding results proposed by other researchers. In addition, the SIFs of a single-edge crack, a through crack, and a semi-circular crack between two anisotropic solids in three-dimensional structures were analyzed.