Numerical Modelling of Cross Roll Straightening

The aim of the cross-roll straightening process is to straighten bars having a circular section. To the knowledge of the authors, most of the work published about this process is based on analytical considerations. In the present study, the process is explained and simulated using LS-Dyna. The similarity between three points bending and cross-roll straightening is highlighted. In order to test the straightening ability of the simulation, a bent bar is used as an input for the simulation. Comparing the curvatures of the in- and output bars, it appears that a reduction of the curvature can be predicted.