Numerical simulation of metal flow patternof Z-type steel in butterfly pass

The numerical simulation of metal flow pattern of Z-type steel has been conducted by finite element method with software ANSYS/LS-DYNA.The selection of material models,the determination of element types and the meshing in this simulation are introduced in details.The simulation results of workpiece's deformation after each pass are received.The deformation of workpiece and stress field in rolling area are analyzed.The references for the simulation of the special-shaped steel rolling process by DEM are provided.