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An elastoplastic method for analyzing the 3D deformation,stress and transverse distribution of tension stress during cold strip rolling is developed.The analysis is based on the elastoplastic variational principle in which a kinematically admissible velocity field is constructed with the lateral flow function as an unknown function.The stress distribution and volume strain distribution are obtained by solving the simultaneous equations formed by the longitudinal deferential equation of equilibrium and constitutive equations.The lateral flow function is determined by minimizing the total energy dissipation rate.Experimental investigation was carried out on a reversible cold mill.The front tension stress distributions in cold rolled strips were measured by a multi-roll segmented tension sensing shapemeter.The calculated results are in good agreement with the measured ones.
An elastoplastic method for analyzing the 3D deformation, stress and transverse distribution of tension stress during cold strip rolling is developed. The analysis is based on the elastoplastic variational principle in which a kinematically admissible velocity field is constructed with the lateral flow function as an unknown function The stress distribution and volume strain distribution are obtained by solving the simultaneous equations formed by the longitudinal deferential equation of equilibrium and constitutive equations. Lateral flow function is determined by minimizing the total energy dissipation rate. Experimental cycle was carried out on a reversible cold mill. of the front tension stress distributions in cold rolled strips were measured by a multi-roll segmented tension sensing shapemeter. The calculated results are in good agreement with the measured ones.