板料气压成形过程的数值模拟和压力优化设计

Numerical Simulation for Forming of Sheets by Pneumatic Pressure and Optimal Design of Pressure

介绍了采用刚－粘塑性有限元技术模拟板料气压成形过程，提出在数值模拟预测成形过程的基础上优化设计压力载荷的方法，利用此法求出的Ｐ－ｔ曲线可供生产实际采用。文末还给出了模拟圆盘件经正反吹成形过程的实例。

In this paper, rigid visco_plastic FEM is applied to model the forming processes of sheets by pneumatic pressure. A method for optimizing pressure load is suggested by means of numerical simulation and prediction of forming process. This method can be used to calculate the pressure_time curve for practice. At the end of this paper, an example is introduced to simulate the process for up_down bulging of a disk.