抛物线模拔速度场的曲线积分问题

The Curvillinear Integral Problems to Velocity Field 。for Drawing Through Parabolic Dies

文章采用ｖｏｎＫａｒｍａｎ基本假设对模面函数为抛物线（又称喇叭模）的拔制问题设定了运动许可速度场，并经曲线积分与变上限积分得到拔制力的上界解析解。

In this paper with Von Karman's basic assumptions a kinematically admissible continuous velocity field has been established to draw through parabolic dies(or called trumpet dies).Then using the curvilinear integral and the integral as a function of the upper limit,an upper bound analytical solution of the drawing stress is obtained