Prediction and Analysis of the Force and Shape Parameters in Variable Gauge Rolling

Abstract Variable gauge rolling is a new process to obtain plate for which the thickness changes continuously by and dynamically adjusting roll gap upward downward in process. This technology an effective method producing lightweight, low-cost, economical plates. However, variable unsteady process, force deformation parameters are complex. In this research, based on minimum energy theory of variational principle considering characteristics movement workpiece comprehensively, internal plastic deformation, friction, shear tension powers, result total power functional obtained with first integral then variation adopting specific strain rate vector inner product. The analytical results also established using method. Then precision model certified measured values medium hot plant experimental data Tailor Rolled Blank rolling. Good agreement found. Additionally, rule bite angle, neutral location points shown, change mechanism friction parameter stress state effect coefficient given research proposes mathematical control that provides scientific basis technical support obtaining accurate section shape production.