汽车覆盖件多工步成形数值模拟技术研究

NUMERICAL SIMULATION TECHNOLOGY ON MULTI-OPERATION SHEET FORMING PROCESS

有限元技术已广泛应用于力学过程仿真 ,对冲压等工程问题的应用也逐渐得到人们的重视与认可。然而 ,有限元技术在多工步成形中的应用尚处于起步阶段。本文讨论了多工步成形模拟过程中存在的几个关键问题 ,提出了相应的解决办法。并结合 NUMISHEET’ 99设定的奥迪汽车公司前门板成形标准考题模拟工作 ,对汽车覆盖件多工步成形数值模拟问题进行了具体的研究。

FEM simulation has been widely used in the field of metal forming, such as stamping etc. Numerical simulation technology on mulit-operation sheet forming, however, is still immature nowadays. This paper expounds critical techniques for the multi-operation forming simulation. To demonstrate the application of these techniques, a front door panel forming simulation is carried out.