Numerical Simulation In Automobile Panel Shaping Technology And Experimental Research

Stamping technology had been widely used in machine-building industry and play an important role, for it has a series of strongpoint such as high productivity, steady quality, lower cost, feasibility of processing complicated shape etc. However, the design of stamping die was mainly depended on the designer's experience. The quality of designing is hardly steady for some complicated forming. Some important parameters can be confirmed only after the die had been produced and then been repaired for many times. Time and resource are wasted by this way. With the development of finite element technique and computer, numerical simulation has become the effective tool of technology analysis and optimal design step by step.The application of computer and computer aided technology in the areas of blank shaping is increasingly the same wide and deep as other objects. In this thesis, we study the finite element simulation of automobile panel in detail. The methods of elasto-plastic finite element numerical simulation and experimental research are adopted in this thesis. Numerical simulations and experimental research are carried out in the process of automobile panel drawing. The stress-strain analysis of result of drawing and springback is made in this paper to find out the optimal technology parameters and developing methods. Drawbead and friction coefficient test equipment designed and produced by ourselves were used, drawbead restraining force and friction coefficient were tested in the process of drawing and the basic data for numerical simulation was provided. Experimental results and simulation results of drawbead were compared; the accuracy of elasto-plastic finite element simulation was fully checked.