Approximate calculation of j-integral of pressure pipes with circumferential surface crack

被引：0

作者：

Yang, Xin-Qi ^{[1
]}

Huo, Li-Xing ^{[1
]}

Zhang, Yu-Feng ^{[1
]}

Liu, Yue-Li ^{[1
]}

机构：

[1] Sch. of Mat. Sci. and Eng., Tianjin Univ., Tianjin 300072, China

来源：

Gongcheng Lixue/Engineering Mechanics | 2002年 / 19卷 / 04期

关键词：

Cracks - Finite element method - High pressure piping;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The estimation methods (SC.ENG1 and SC.ENG2) of J-integral for pipes with circumferential surface crack are discussed in detail and the 3D elastic-plastic finite element model for circumferentially surface-cracked pipe is established to testify the feasibility of above methods. The 3D elastic-plastic fracture analysis is conducted to study the distribution of J-integral along the front of surface crack, and the effects of pipe material with different yield plateau on J-integral values are discussed. The feasibility of these J-integral estimation methods for pipe steel with different yield plateau used in China is also discussed in detail.

引用

页码：75 / 80