A Study On Numerical Simulation Of Stamp Forming Process Of Autobody Panel

In this paper the non-linear explicit finite element theory is studied systematically, which include material models, element algorithm and contact handling methods etc. The FE modeling methods of stamping simulation are investigated and a comparatively deep study on the selection of processing parameters are also made. And on the basis of them, the forming simulation of large autobody panels are made and results analyzed.1. The non-linear finite element theory for autobady panel forming simulation is systematically expounded and discussed. Three usually used material models for stamping simulation are discussed and studied, and based on the reference of other research papers, the explicit description of Elastic-Plastic Materials for Hill's and Barlat's yield models are established. BT shell element theory and contact handling algorithm are also expounded in this paper.2. The FE modeling methods of stamping simulation are studied, and the actual handling methods based on the software the paper use are discussed.3. Parameters in the simulation of sheet metal forming are studied, which include virtual punch velocity, material models etc. And based on the comparament with experimental data, some basic principles on rational selection of these parameters are proposed.4. A part of rare-lamp frame forming simulation and NumiSheet 2002 benchmark c are carried out and the results are discussed.