Numerical analysis of the roller hemming process

摘要

Numerical simulation of the roller hemming process is studied in this approach. Combined hardening is used for steel panel BSUFD roller hemming. Meshes are produced based on the deformation state of the panel. Tools are set up for flanging, pre-hemming, and final hemming. Roll-in/out results are obtained through a simulation and an experiment to verify the accuracy of the numerical model. Fracture is likely to occur in the bending area, while wrinkle may be found in the flanging area. The evolution of the load on the roller is found to be different over the process. Roller hemming could be accepted as a kind of plane strain bending deformation process.