流函数法在减径拔管上限分析中的应用

Application of Flow Function Method on Upper-Bound Solution during Tube Sinking

应用流函数法建立减径拔管的动可容速度场，用上限原理得出减径拔管的上限解，分析了摩擦状态、变形程度及相对壁厚等工艺参数对拉拔载荷的影响，从而得出最佳工艺参数。

Establishes a kinematically admissible velocity field during tube sinking by applying flow function method.Obtains the upper-bound solution of tube sinking by upper-bound approach.Studies the influences of friction,the deformation and the relative wall thickness on drawing force and obtains the optimal technological parameters.