• CN：11-2187/TH
• ISSN：0577-6686

›› 2007, Vol. 43 ›› Issue (12): 88-92.

• 论文 •

### 板料成形仿真中冲模速度的确定方法

1. 重庆大学机械传动国家重点实验室;重庆大学研究生创新基地
• 发布日期:2007-12-15

### DEFINITION METHOD ON PUNCH VELOCITY IN FORMING SIMULATION OF SHEET METAL

HU Yumei; ZHANG Jian;DENG Zhaoxiang; WANG Yong

1. State Key Laboratory of Mechanical Transmission, Chongqing University Inno-Base for Granduates, Chongqing University
• Published:2007-12-15

Abstract: The influences of punch velocity to simulation time and results in automobile sheet metal forming simulation are studied at the view of sheet deforming and energy, a method is put forward to define the punch’s velocity basing on the ratio of kinetic energy versus total energy and the change of sheet deforming ratio. The definition method on punch velocity in forming simulation of the sheet metal can avoid grid aberration caused with inertia effects and reduce simulation time efficiently in computer simulation. As to Bao Gang ST16 material, if the ratio of kinetic energy versus total energy is ensured within less than 19%, and the change of sheet deforming ratio less than 3%, the punch velocity is elevated as high as possible, the simulation time will be efficiently shortened, and the simulation result will also satisfy engineering demands. The definition method on punch velocity in forming simulation of the sheet metal is applied to an oil-tank forming simulation and makes a good effect.