Mechanical analysis of edge bending mode for four-roll plate bending process

A mathematical model is developed for simulating the mechanics of edge bend ing mode for four-roll plate bending process. The governing differential eq uations for large deflection of elastic-perfectly plastic thin plate is der ived and solved semi-analytically. The physical quantities important for op eration, such as the shift of plate contact angle with rolls, the forces ap plied on rolls and the position setup of side roll, etc, are all evaluated and shown graphically as the function of the desired finished curvature of plate. Various effects of bender system parameters on these physical quanti ties are also studied.