摘要
以直径为7160 mm的大型开式锻焊齿轮为研究对象,采用集成计算方法预测了齿轮在焊接制造过程中产生的变形。基于MSC.Marc通用有限元软件平台,从齿轮结构中抽取了3个典型焊接接头,采用热-弹-塑性有限元方法计算了各个接头在多层多道焊接条件下的固有变形,即纵向收缩、横向收缩和角变形;将各个焊接接头的固有变形转化为固有应变,采用基于固有应变的弹性有限元方法计算了开式锻焊齿轮的整体焊接变形。数值模拟结果表明,大型锻焊齿轮在焊接制造后,直径方向收缩量约为11 mm,周向收缩量约为3 mm。
In the current study,a large exposed forged-and-welded gear with a diameter of 7160 mm is taken as the research object.An integrated computational approach is employed to predict the total welding deformation of the gear during welding process.Based on software MSC.Marc,three typical welded joints are extracted from the large forged-and-welded gear structures,and the inherent deformations of each joint under multi-pass welding conditions,are calculated by the thermo-elastic-plastic finite element method.The inherent deformations of each welded joint are converted into the corresponding inherent strains,and the total welding deformation of the welded gear is calculated using the elastic finite element method based on inherent strain theory.The numerical simulation results show that the radial shrinkage of the large forged-and-welded gear is about 11 mm after welding,and the amount of contraction in the circumference direction is about 3 mm.
作者
瞿铁
信稳
骆文泽
王重阳
胡龙
黄智泉
邓德安
Qu Tie;Xin Wen;Luo Wenze;Wang Chongyang;Hu Long;Huang Zhiquan;Deng Dean(Citic Heavy Industries Co.,Ltd.,Luoyang 471039,China;State Key Laboratory of Mining Heavy Equipment,Luoyang 471003,China;College of Materials Science and Engineering,Chongqing University,Chongqing 400045,China;Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,China)
出处
《机械传动》
北大核心
2023年第3期124-132,共9页
Journal of Mechanical Transmission
关键词
开式锻焊齿轮
多层多道焊
焊接变形
固有应变
数值模拟
Exposed forged-and-welded gear
Multi-pass welding
Welding deformation
Inherent strain
Numerical simulation
作者简介
瞿铁(1963—),男,江苏靖江人,硕士研究生,正高级工程师,研究方向为大功率齿轮设计、制造及研发,qutie@citic-hic.com.cn;通信作者:邓德安(1967—),男,湖北天门市人,研究生导师,研究方向为焊接过程数值模拟,deandeng@cqu.edu.cn。
