Research on modeling of heat source for electron beam welding fusion-solidification zone  

作　　者：Wang Yajun Fu Pengfei Guan Yongjun Lu Zhijun Wei Yintao 

机构地区：[1]School of Mechanical Engineering and Automation, Beihang University [2]Science and Technology on Power Beam Processes Laboratory, Beijing Aeronautical Manufacturing Technology Research Institute [3]State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences [4]State Key Laboratory of Automotive Safety and Energy, Department of Automotive Engineering, Tsinghua University

出　　处：《Chinese Journal of Aeronautics》2013年第1期217-223,共7页中国航空学报（英文版）

基　　金：co-supported by the National Basic Research Program (No.61362);the National Natural Science Foundation of China(No. 50935008 and 10902113);Science Foundation of Aeronautics (No. 2010ZE25006)

摘　　要：In this paper, the common heat source model of point and linear heat source in the numerical simulation of electron beam welding （EBW） were summarized and introduced. The combined point-linear heat source model was brought forward and to simulate the welding temperature fields of EBW and predicting the weld shape. The model parameters were put forward and regulated in the combined model, which included the ratio of point heat source to linear heat source Qpr and the distribution of linear heat source Lr. Based on the combined model, the welding temperature fields of EBW were investigated. The results show that the predicted weld shapes are conformable to those of the actual, the temperature fields are reasonable and correct by simulating with combined point-linear heat source model and the typical weld shapes are gained.In this paper, the common heat source model of point and linear heat source in the numerical simulation of electron beam welding （EBW） were summarized and introduced. The combined point-linear heat source model was brought forward and to simulate the welding temperature fields of EBW and predicting the weld shape. The model parameters were put forward and regulated in the combined model, which included the ratio of point heat source to linear heat source Qpr and the distribution of linear heat source Lr. Based on the combined model, the welding temperature fields of EBW were investigated. The results show that the predicted weld shapes are conformable to those of the actual, the temperature fields are reasonable and correct by simulating with combined point-linear heat source model and the typical weld shapes are gained.

关 键 词：Electron beam welding （EBW） Fusion-solidification zone Heat source model Temperature fields Weld shape 

分 类 号：TG456.3[金属学及工艺—焊接] TG402