Optimization of welded structure in bogie frame of high-speed locomotive

How to reduce and control welding deformation is a major issue in the process of manufacturing the bogie frame of the high-speed locomotive. The deformation of the beam is closely associated with its structure. In order to reduce the deformation and retain the rigid of the structure, a new optimization method including FEA simulation and object function is introduced. A project which can reduce the deformation and keep the rigid of the beam is proposed. Furthermore, the method can be used more widely in the similar large welded structure.