基于固有应变法反应堆压力容器支座焊接变形预测
张萌1，朱忠尹2
（1.辽宁装备制造职业技术学院 机械工程学院，辽宁 沈阳 110161；2.西南交通大学 焊接研究所，四川 成都 610031）
摘要：由于反应堆压力容器支座板厚大、焊缝多，焊接过程中不可避免的会产生焊接变形，如果可以提前对焊接过程中产生的焊接变形进行预测，就能够采取相应的方法在焊接过程中对焊接变形进行控制。基于固有应变法，采用有限元计算的方法对压力容器支座进行了仿真计算，对该结构在焊接过程中产生的焊接变形进行了预测，结果表明：在结构刚度较小的部位均出现较为明显的焊接变形，建议在实际施焊过程中增加适当的支撑来增加结构的刚度，减小焊接变形。对于结构整体焊接变形，可以通过改变焊接方向和焊接顺序来进行改善。
关键词：支座；固有应变法；多层多道焊；焊接变形
中图分类号：TG40 文献标志码：A doi：10.3969/j.issn.1006-0316.2017.08.008
文章编号：1006－0316 (2017) 08－0034－05
Weld Distortion Predication of Reactor Pressure Vessel Support Based on Inherent Strain Method
ZHANG Meng1，ZHU Zhongyin2
( 1.Department of Mechanical Engineering, Liaoning Equipment Manufacture College of Vocational Technology, Shenyang 110161, China;
2.Welding Research Institute, Southwest Jiaotong University, Chengdu 610031, China )
2.Welding Research Institute, Southwest Jiaotong University, Chengdu 610031, China )
Abstract：As there distributed many types of weld and the thickness of the support that will affect the welding distortion of the reactor pressure. Predication of weld distortion can control the quality during materials processing. This paper is focused on the finite element simulation based on inherent strain method for multipass weld. The results showed that there occurred obvious distortion when the stiffness was in smaller so the welding direction and welding order should be acquired.
Key words：support；inherent strain method；multipass weld；weld distortion
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收稿日期：2017－01－15
作者简介：张萌（1980－），男，辽宁沈阳人，硕士，讲师，现任数控维修教研室主任，主要研究方向为机械设计制造及自动化以及自动化设备应用与维修。
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