T-stress estimation by the two-parameter approach for a specimen with a V-shaped notch
- 作者: Bouledroua O.1, Elazzizi A.1,2, Hadj Meliani M.1,3, Pluvinage G.3, Matvienko Y.4
-
隶属关系:
- LPTPM, FT
- Faculty of Mechanical Engineering
- Laboratoire de Fiabilité Mécanique, LFM-ENIM, île de saulcy 57045
- Laboratory of Modelling Damage and Fracture
- 期: 卷 58, 编号 3 (2017)
- 页面: 546-555
- 栏目: Article
- URL: https://journals.rcsi.science/0021-8944/article/view/160161
- DOI: https://doi.org/10.1134/S0021894417030208
- ID: 160161
如何引用文章
详细
In the present research, T-stress solutions are provided for a V-shaped notch in the case of surface defects in a pressurised pipeline. The V-shaped notch is analyzed with the use of the finite element method by the Castem2000 commercial software to determine the stress distribution ahead of the notch tip. The notch aspect ratio is varied. In contrast to a crack, it is found that the T-stress is not constant and depends on the distance from the notch tip. To estimate the T-stress in the case of a notch, a novel method is developed, inspired by the volumetric method approach proposed by Pluvinage. The method is based on averaging the T-stress over the effective distance ahead of the notch tip. The effective distance is determined by the point with the minimum stress gradient in the fracture process zone. This approach is successfully used to quantify the constraints of the notch-tip fields for various geometries and loading conditions. Moreover, the proposed T-stress estimation creates a basis for analyzing the crack path under mixed-mode loading from the viewpoint of the two-parameter fracture mechanics.
作者简介
O. Bouledroua
LPTPM, FT
编辑信件的主要联系方式.
Email: o.bouledroua@univhb-chlef.dz
阿尔及利亚, Chlef, 02000
A. Elazzizi
LPTPM, FT; Faculty of Mechanical Engineering
Email: o.bouledroua@univhb-chlef.dz
阿尔及利亚, Chlef, 02000; Oran, 31000
M. Hadj Meliani
LPTPM, FT; Laboratoire de Fiabilité Mécanique, LFM-ENIM, île de saulcy 57045
Email: o.bouledroua@univhb-chlef.dz
阿尔及利亚, Chlef, 02000; Metz
G. Pluvinage
Laboratoire de Fiabilité Mécanique, LFM-ENIM, île de saulcy 57045
Email: o.bouledroua@univhb-chlef.dz
法国, Metz
Y. Matvienko
Laboratory of Modelling Damage and Fracture
Email: o.bouledroua@univhb-chlef.dz
俄罗斯联邦, Moscow, 101990