Characteristic-tensor method for efficient estimation of stress-intensity factors of three-dimensional cracks

被引：1
作者：
Saito, Kei [1 ,2 ]
Hirashima, Tei [1 ]
Ma, Ninshu [2 ]
Murakawa, Hidekazu [2 ]
机构：
[1] JSOL Corp, Chuo Ku, 2-5-24 Harumi, Tokyo 1040053, Japan
[2] Osaka Univ, 11-1 Mihogaoka, Ibaraki, Osaka 5670047, Japan
来源：
ENGINEERING FRACTURE MECHANICS | 2021年 / 257卷 / 257期
关键词：
Characteristic tensor; Stress intensity factor; Three-dimensional crack; DOMAIN INTEGRAL METHOD; ENERGY-RELEASE RATE; FINITE-ELEMENT; COMPUTATION; FRONT; FIELD;
D O I：
10.1016/j.engfracmech.2021.108016
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A practically simple characteristic-tensor method (CTM) is proposed for evaluation of the stress state at crack tips subjected to arbitrary loading conditions. Stress-intensity factors (SIFs) in several representative types of three-dimensional cracks (such as the circular crack, elliptical crack, and inclined circular crack) were computed by the finite-element method. Even using a relatively coarse mesh, SIFs for mixed-mode crack problems could be estimated by the CTM with high accuracy. The results show that the CTM is a practical and reliable approach to the estimation of SIFs of 3D cracks that are important to the industrial application.
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页数：21
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