摘要
半圆管夹套设备最常见的问题是夹套焊接部位开裂引起泄漏。焊接残余应力是重要的影响因素之一。本文利用有限元软件ABAQUS,开发了一个顺次耦合的焊接热应力计算程序,讨论坡口形式、线能量、半管间距等参数的变化对焊接残余应力的影响,得到了半管结构残余应力分布特征,找到了最大焊接残余应力的位置及大小,为半管夹套的安全评定提供参考。
The general problem of half- pipe jacket is the leakage of the welding line induced by crack. Welding residual stress is one of the main affect factors. Using the finite element analysis software ABAQUS, a sequentially coupled welding thermal - stress procedure is developed to calculate the stress distribution of half-pipe and discuss the effect of bevel form and heat input as well as the half-pipe separation. The characteristic of welding residual stress distribution was obtained. The position and value of maximum stress was found which provide a reference for safety access.
出处
《压力容器》
北大核心
2006年第5期25-28,共4页
Pressure Vessel Technology
