Approximate description of crack kinking and curving

被引：72

作者：

Karihaloo, B.L. ^{[1
]}

Keer, L.M. ^{[1
]}

Nemat-Nasser, S. ^{[1
]}

Oranratnachai, A. ^{[1
]}

机构：

[1] Department of Civil Engineering, Northwestern University, Evanston, IL, 60201, United States

来源：

Journal of Applied Mechanics, Transactions ASME | 1981年 / 48卷 / 03期

关键词：

Approximate descriptions - Crack kinking - Finite length - Growing cracks - In-plane stress - Mixed-Mode Loading - Second orders - Straight crack;

D O I：

10.1115/1.3157665

中图分类号：

学科分类号：

摘要：

An approximate description is given of the slightly out-of-plane growth of a straight crack under mixed-mode loading and in the presence of an in-plane stress. By using a perturbation technique, conditions are derived for the deviation of the crack from straightness. The allowance for the possible curvature of the quasi-statically growing crack, and the effect of the finite length of the main crack are included in the analysis, which retains second- order terms. In particular, it is shown that the curvature of the crack path depends on the in-plane stress and the derivatives of the stress-intensity factors with respect to the length of the main crack. The influence of the in-plane stress on the stability of the crack growth is also studied and the conclusions are the same as those reported by Cotter-ell and Rice. © 1981 by ASME.

引用

页码：515 / 519