电焊机2024，Vol.54Issue(8)：前插1-前插2,1-7,9.DOI:10.7512/j.issn.1001-2303.2024.08.01
基于数字孪生的核电关键结构全周期制造焊接变形预测
Prediction on the Welding Distortion During Full-cycle Manufacturing of Nuclear Power Key Structures based on Digital Twins
摘要
Abstract
Accurate prediction on the welding distortion of large and complex structure manufacture is always hard in the welding engineering.Digital twin(DT)technology which is characterized by a digital-virtual model,interaction through vir-tual reality information,perception of hidden knowledge behind real data,and accurate prediction,possess the ability to deal with welding engineering problem in high dimension along with the numerical simulation method.Therefore,DT could be used to control the welding distortion of the big scaled and complex welding structure.In this study,a shielding structure on the top of the nuclear power plant was investigated by developing technical route based on the DT technology.The welding distortion with its distribution mechanism were studied by conducting welding manufacturing experiment and simulation which used to match the DT characteristics,to precisely predict the welding distortion of the shielding structure on the top of the nuclear power plant,and support the experimental and theoretical basement for optimizing structure design and control-ling distortion.The study shows the result that the welding distortion of the shielding structure on the top of the nuclear power plant is in mm grade of agreement with that obtained by DT technology.It is also demonstrated that using DT technol-ogy could obviously decrease the uncertainty of numerical simulation in predicting the welding distortion of large scale structure and improve the precision of prediction.关键词
数字孪生/大尺寸核电结构/数值模拟/焊接变形Key words
digital twins/large scale nuclear structure/numerical simulation/welding distortion分类
矿业与冶金引用本文复制引用
郑文健,冯道臣,李仁厚,杨建国..基于数字孪生的核电关键结构全周期制造焊接变形预测[J].电焊机,2024,54(8):前插1-前插2,1-7,9.基金项目
国家自然科学基金资助项目(52375391) （52375391）
