FEM Simulation of Cold Roll Forming in the Car's Anti-Collision Beam
The cold roll forming process of car's anti-collision beam was simulated by software of finite element analysis MSC. Marc. In this paper, changes of stress and strain in the forming process were simulated, and the history-curves of the stress and strain of the special nodes were obtained and the deformations of the transition zone were analyzed. The simulation results show that as the metal sheet is bending, deformation changed from the elastic to plastic deformation, in each pass, the bending stress increased, then decreased, and after some fluctuation it tends to a steady state, from this point of view, Cold Roll Forming is a multiple loading and unloading process. There is a transitional zone between two sets of rollers, in this zone, the value of equivalent stress exceeds the yield stress, and sheet occurred plastic deformation.
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Document Type: Research Article
Publication date: September 1, 2012
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