根据铸拉工艺的特点和钢、铝变形性能,假设钢丝为刚性体,同时,假设变形体铝层的流动速度在截面上呈二次函数分布.在此基础上利用流函数建立了变形区速度场,并利用计算机对变形能进行求极小值,得到了变形区的速度分布及拉拔力.计算值与实测值比较吻合.“,”According to the c.haracteristic of cast-drawing and the performance of aluminium and steel, the steel was hypothesized rigid. At the same time, the speed of aluminium along the cross section was assumed to be Parabolic distribution. Based on the assumption, the computer was used to calculate the minimum deformation energy, and the speed distribution in the deformed area and the drawing force were gotten. The calculated value was close to the measured one.