The Numerical Simulation Of Welding For New Type Frame Of The Bogie

The bogie of rolling stock is a key part to ensure riding quality and operation security of a train, of which the frame is the most important bearing component. As the major manufacturing processes, it makes a lot of sense to research welding and the relation between welding residual stress and structural strength of the frame of the bogie. The rapid development of modern welding technology provides convenience for the improvement of the welding quality of the bogie significantly, but it hardly prevents from the defects in the welding process, due to the physical characteristics of the material itself, as well as the heterogeneity of the welding joints performance.Under the development of the simulation technology, numerical computing technology has become a major driving force for welding technology in modern engineering. There are lots of phenomena includeing the electromagnetic welding, metal melting solidification and so on. Under today’s environment of China’s rail developing greatly, the safety of the railway locomotive is particularly important.After building3D model, meshing, and setting boundary conditions, it is performed with SYSWELD software to simulate numerically welding for the bogie structure of rolling stock, and the result matches with experimental results well, which ensures the reliability of the simulation. To optimize the technology, there are some kinds of welding process in different sequence and restraint conditions simulated and compared with others to show the optimum one.