【摘要】 通过实验的方法,直接验证圆柱镦粗时剪应力分布曲线。由于摩擦剪应力存在,圆柱镦粗后发生不均匀变形,研究其半径的变化可得出r-R_i曲线,其形状和r-τ曲线一致。更多还原

【Abstract】 The distribution curve of shear stress daring upsetting was simply determined by the experiments. Due to the presence of the frictional shear stress.the deformation of upset bar was non-uniform. By the investigation into the changes of the diameters of the bar.the r Ri curve could be obtained .which had the same shape as r-r curves.更多还原