J Bazrafshan - Department of Mechanical Engineering, Islamic Azad University Ayatollah Amoli Branch, Iran
A Taghizadeh Armaky - Department of Mechanical Engineering, Islamic Azad University Ayatollah Amoli Branch
A Gorji - Department of Mechanical Engineering, Babol Noshirvani University of Technology, Iran

One of the most sensitive features of sheet metal forming processes is the elastic recovery during unloading, called spring-back, which leads to some geometric changes in the product. This phenomenonwill affect bend angle and bend curvature, and can be influenced by various factors. In this research, the effects of sheet thickness and die radiuses an sheet anisotropy on spring-back in L-die bending of CK۶٧ steel sheet were studied by experiments and numerical simulations

Sheet forming, bending, spring back, plastic deformation