压力容器2017，Vol.34Issue(5)：46-51,57,7.DOI:10.3969/j.issn.1001-4837.2017.05.008
一种高效预测厚壁管件焊接变形的有限元模拟方法
An Efficient FE Simulation Method for Predicting Welding Distortion of Thick-walled Pipes
李佳浩 1张颖 1王鑫 1谷文 1陈星2
作者信息
- 1. 中国第一重型机械集团大连核电石化公司,辽宁大连116113
- 2. 北京伊萨科技发展有限公司,北京100095
- 折叠
摘要
Abstract
Analysis of simplifications that can be applied to butt welding for the thick-walled pipes based on SYSWELD software was discussed.The computation efficiency was improved and the results show the error of displacement-field was small by reducing dimensions and simplifing heat source model.An efficient FE simulation method for predicting welding distortion of thick-walled pipes is provided for practice.The computed results show that there is an obvious axial distortion in thick-walled pipes butt welding and the main stage of shrinkage is early stage of welding.As the welding quantity reaches the 20 mm approximately,the rigidity of structure can limit the axial shrinkage to some extent and the shrinkage becomes slow.Based on computed efficiency,computed results and experimental results.A FE simulation method is available that applying given-temp heat source model in 2D axisymmetric structure can effectively predict the welding distortion of thick-walled pipes.关键词
厚壁管件/数值模拟/热源模型/二维结构Key words
thick-walled pipes/numerical simulation/heat source model/2D axisymmetric structure分类
机械制造引用本文复制引用
李佳浩,张颖,王鑫,谷文,陈星..一种高效预测厚壁管件焊接变形的有限元模拟方法[J].压力容器,2017,34(5):46-51,57,7.
