Numerical Simulation Research on the Springback in Drawing Forming of the Complex Auto Body Panels Based on LS-DYNA

The simulation technology of the finite element has been applied widely in many industrial departments. It predicts wrinkling, cracking, springback and prevents them happened in the forming simulation of the complex Auto-body Panels. And we all know that the control of springback is the most difficult. Numerical simulation and its application are introduced in the springback of sheet metal forming. A new simulation method has been used to simulate the springback of the Auto-body Panels of the benchmarks of Numisheet´05 in this paper because the forming of the panels which are composed of complex space curves produces the heterogenous stress distribution. So it improved the blank forming quality and springback accuracy after using blankholding simulation. It was introduced that the simulation process of blankholding, drawing, trimming and springback in detail.