Numerical Simulation And Parameter Optimization On Forming Process Of Inner Panel Of Car Luggage

Automotive industry plays an important role in China. Automotive body panel forming and mould design is the key technology to develop our mould industry, especially automobile. The numerical simulation of automotive body panel forming is the research area of inter discipline including metal plastic forming theory and process, computational mechanics, CAD technology, computer graphics, etc. It is a very difficult project because sheet metal forming includes three kinds of nonlinearity such as material, geometry and boundary condition. Nowadays, developed countries have put FEA in practice during production design and manufacture, but in our industry it is just at the beginning.The paper Summarize the finite element method and the key technics of the sheet forming process. Summarize the development of plant FEM inside and outside state. Researched the equation, elastic-plastic relationship, element theory of the large deformation FEM and the dynamic explicit algorithm. Then the paper discuss the contact realization. The forming process character and bug of panel are summed up. General steps and the key arc of the numerical simulation of panel are brought forward. Some maters like model setup and mesh generation are discussed. The paper focuses on the forming analysis and numerical simulation of automotive body panels which come from fiat corporation and the part is inner panel of car luggage. When using UG software as modeling tools, DYNAFORM just imports the surface data in an IGES format. The numerical simulations are consistent with actual conditions. The author learned and summed up the latest achievement domestic and abroad, discussing and deepening the practical...