Numerical Simulations of a Two Roll Round Bar Straightener

A finite element model of a two-roll round bar straightener has been developed to study the influence of key parameters on the straightening process. The present model already allows a better understanding of the process and the effects of straightening on the bar. A dedicated post-treatment is also proposed. It is particularly focused on the defect of the bar before and after straightening as well as rotation speed of the bar in order to validate the model. Other quantities are available : equivalent cumulated plastic strain and longitudinal stress for instance. This model is also the first step towards further analysis of the process such as, for example, parametric studies.