Simulation of Rolling Force for Hot Strip Rolling under Accurate Contact Boundary

On the basis of the stream surface strip element method, based on the incline stress model in plastic mechanics, considering the interface between strip and rolls as a three-dimensional curved surface, and combining with the solution of the incline stress in plastic mechanics, the three-dimensional accurate stress boundary condition at the interface and the relationship between rolling pressure and internal stresses of deformation zone were obtained. The accurate analysis and computation for three-dimensional deformation and stress of plate and strip rolling have been carried out. The simulation of the rolling force of hot steel strip rolling indicates that the computation accuracy of the new method (the improved method) is higher than that of the former one.