锥模挤压时轴对称定常流动模型的数学模拟与综合优化

Mathematic Simulation and Synthetic Optmization of Steady-State Flow-Pattern Through Conical Die in Axisymmetric Extrusion

本文给出了一种以二阶导数连续的函数模拟锥模挤压圆管时的定常流动模型,在以满足几何边界条件和使变形功率最小为目标函数对流动模型进行综合优化后建立动许可速度场,求解锥模挤压轴对称定常流动的理论方法。

In this paper, a more convenient and practical method of solving the problems of axisymmetric extrusion through conical die was presented. The steady-state flow-pattern of the problems was simulated with a function of derivative continuity and was optimized to satisfty its boundary condition and to minimize the total energy. Based on the optimum flow-pattern, the velocity discontinuities can be eliminated completely in the admissible velocity field.