Calculation of springback with considering of hardening laws in the cold roll forming process of the steel plate

springback is one of the challenges in the final shape of the steel in the cold roll forming process of the steel plate.The precision of the simulation of metal sheet forming processes for prediction of the springback depends on the stress-strain relationship, the yield function and the selected hardening model and the anisotropy of the material. In this paper, using alternating tension-compression experiment and using simulation in software LS-OPT, the variables of the Yoshida-Uemori hardening model have been obtained for St37 steel. Springback in the final shape of steel plate deformation is a challenge of the roll forming process. Since consideration of the hardening law is important in the springback, various models of hardening law are proposed for more accurate prediction of material behavior. One of the most accurate models in predicting metal behavior is the Yoshida-Uemori hardening model. The experimental tests were also carried out as well as the simulations in the Ls-dyna simulation software with and without Yoshida-Umari hardening. It was shown that the prediction of springback with using the Yoshida-Umari model was more accurate.