焊管Issue(3)：67-72,6.
焊接残余应力和管道完整性分析
Welding Residual Stress and Pipeline Integrity
汪翰云 1王慧 2张万鹏 1鲜林云 2常永乐1
作者信息
- 1. 国家石油天然气管材工程技术研究中心，陕西 宝鸡 721008
- 2. 宝鸡石油钢管有限责任公司，陕西 宝鸡 721008
- 折叠
摘要
Abstract
In this article, it briefly introduced the classification and the cause of the residual stress, analyzed the unfavorable influence of residual stress on fatigue life and fracture capacity of the pipeline. The post-weld plastic deformation may also interact with welding residual stress and affect the magnitude and distribution of the final residual stress state through-thickness and around the pipe’s circumference. With the latest development in Computational Welding Mechanics (CWM), it is today possible to estimate the residual stresses and distortions due to welding more accurately, and the results from which can be used for optimisation and determination of the structural life time of pipelines. Moreover, recent advances in analytical solutions have also enabled efficient estimation of the effects of plasticity on welding residual stresses. Welding residual stress and the influence of post-welding plasticity on final residual stress magnitude and distribution were verified by two examples.关键词
焊接/残余应力/塑性变形/管道完整性Key words
welding/residual stress/plastic deformation/pipeline integrity分类
能源科技引用本文复制引用
汪翰云,王慧,张万鹏,鲜林云,常永乐..焊接残余应力和管道完整性分析[J].焊管,2015,(3):67-72,6.
