压力容器2011，Vol.28Issue(6)：16-19,4.DOI:10.3969/j.issn.1001-4837.2011.06.004
基于三维有限元模拟高钢级管线钢断裂过程中的裂纹尖端张开角
Simulation of Crack Tip Opening Angle during Fracture Process of High - grade Pipeline Steel Based on 3D Finite Element Analysis
陈福来1
作者信息
- 1. 中国石油海外勘探开发公司，北京100034
- 折叠
摘要
Abstract
High pressure, rich gas transmission pipeline requires the development of measuring method of Crack Tip Opening Angle (CTOA). The simulation of high -grade pipeline steel CTOA specimen fracture process has been carried out with the 3D finite element method. The results showed that the deviations of the finite elements calculation values and the experimental values of the (CTOA)care 10.38% ~ 17.5% , and the pipeline steel (CTOA)C is increased with specimen thickness increased, and they have linear relation. The fitting predicted formulas of pipeline steel (CTOA) c were acquired by analyzing results of finite elements calculation.关键词
裂纹尖端张开角；三维有限元；公式拟合；止裂Key words
crack tip opening angle/3D finite element/fitting formula/arrest分类
能源科技引用本文复制引用
陈福来..基于三维有限元模拟高钢级管线钢断裂过程中的裂纹尖端张开角[J].压力容器,2011,28(6):16-19,4.
