Abstract:
This thesis preparation is A study of the relationships between springback and stress in compression bending process by using finite element-simulation topic. The thesis was made by me and it useful for studying the impact of DIN St 37 steel from compression bending process. The materials used for study such as steel tube , round bar , steel sheet. In the furniture industry and construction industry today. Them often used metal forming by bending process. But the cold working process at room temperature. It has many stress at kink of steel for example tensile stress and compression stress etc. The stress has impact for quality of steel. The bending process has a defects such as cracking , splitting on outside bend radius , variation in wall thickness , cross section distortion , wrinkling and springback. Therefore , The study of defects caused by stress. It is going to use finite element principle and MSC. Marc Mentat program. The finite element program , It can analysis stress , strain and defects of compression bending process. By that , The compression bending process always used multifunction bend die.