Precise strip profile control is crucial in cold rolling for high product quality. This study presents an integrated model of a 20-high mill, combining finite element and analytical formulations to capture roll, bearing, and housing compliance with nonlinear contacts. Rolls are modeled with Timoshenko beams including crown and taper, while a modified Winkler foundation addresses inter-roll forces. Validation against finite element simulations and industrial data confirms accuracy. The model is applied to strip profile optimization, using an SVD-based approach to define optimal taper/backup actuator settings and influence maps for control design.
Combined Finite Element-Analytical Modeling of 20-High Cold Rolling Mills for Strip Profile Optimization and Control
Federico Ballo;Giorgio Previati;Pietro Stabile;
2026-01-01
Abstract
Precise strip profile control is crucial in cold rolling for high product quality. This study presents an integrated model of a 20-high mill, combining finite element and analytical formulations to capture roll, bearing, and housing compliance with nonlinear contacts. Rolls are modeled with Timoshenko beams including crown and taper, while a modified Winkler foundation addresses inter-roll forces. Validation against finite element simulations and industrial data confirms accuracy. The model is applied to strip profile optimization, using an SVD-based approach to define optimal taper/backup actuator settings and influence maps for control design.| File | Dimensione | Formato | |
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