Present Situation and Prospect of Welding Simulation Technology

Abstract

In this paper, we mainly introduce the research status and development trend of welding numerical simulation technology. It is mainly reviewed that the simulation of molten pool flow field, welding temperature field and mechanical field, welding deformation and residual stress, hydrogen diffusion analysis, carbon migration of dissimilar steel welded joints, special welding process, microstructure of welded joints and grain growth process of welding heat affected zone. Then we discuss the special welding process simulation technology and special software for welding simulation. Finally, the development of welding numerical simulation technology in China are concerned.

Design of welding parameters for laser welding of thick-walled structures made of aluminum alloy

“…Modeling of laser welding processes is based on physical and empirical relationships. It mostly includes coupled thermal, metallurgical, and mechanical analysis [1][2][3][4][5][6]. In modeling and numerical simulation, the influence of the laser beam on the material during the fusion welding process can be defined by means of different heat source models [7][8][9][10][11][12][13][14].…”