Computer simulation of a non-symmetrical-section steel forming process by the spline finite strip method based on the U.L. method

Non-symmetrical-section steel forming is a very complicated process, and is very difficult to simulate. Based on the Updated-Lagrangian method, a theoretical model of the elastic–plastic large deformation spline finite strip method is presented in this paper. The method is employed to analyze the forming process of non-symmetrical-section steel for the first time, and the three-dimensional displacement field, the stress field and the strain field between two stands during the forming process have been established. This research work will lay the foundation for the CAD/CAM high technology of a cold forming roll.