| Automobile panel stamping is an extremely important process for manufacture of automobile parts. Nowadays, traditional methods are still in used in panel die designing and manufacturing in domestic automobile industry. Process planning and die designing depend mainly on the experience of designers and a trial-and-error procedure is often adopted to get qualified dies. This method is inefficient, costly, time consuming, and the quality of dies can not be ensured. In this thesis, some preprocessing techniques of finite element mesh generation in automobile panel are investigated for sheet metal forming is moreover perfected. The researches belong to the development of CAD/CAE/CAM integration system for sheet metal stamping and die design at Institute of Automobile Body and Die Engineering, JiLin University. In recent decades, with the rapid development of computer technology, the method of CAD/CAE/CAM has achieved great success both in theory and in practice. The method of finite element analysis has been very popular as a powerful means of numerical solution and simulation for complicated problems in engineering community. Generating the meshes, which is an important precondition for finite element analysis, is very complicated and easily make mistakes. It takes up a major part of the total time of the finite element analysis. At the same time, the quality of a mesh directly affects both the reliability of finite element analysis result and the time that the analysis process consumes. As a result, researching how to generate high quality mesh rapidly is extremely valuable for finite element analysis. Combining with part of the national key natural science fund project named "fundamental theories, computation algorithm and key technology of stamping forming and die design", this paper does deeply systemic researches on finite element mesh generation technology, and it developed corresponding mesh generation function and put forward a sort of automatic generation mapping...
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