Nonlinear mechanical model of the shaft of a roll forming mill and parameter identification

Abstract Roll forming is a continuous process in which moving metal sheet passes through numerous pairs of opposing rolls. The shafts the roll mill are equipped with these rolls and must be set up aligned to achieve required final profile sheet. practically relevant task predicting geometry this incremental rolling varying characteristics entering requires an accurate description stiffness behavior shaft rolls, most compliant part mill. In paper, measured force-deflection characteristic without compared predictions various theoretical models, followed by adoption shear deformable beam model nonlinear elastic supports bearings. coefficients cubic rotational springs as well effective length between identified based on experimental data for deflections, along loading levels. obtained via finite element shaft. thus provided shows high accuracy measurements. paper’s results serve foundation models predict