【摘要】 通过计算机模拟金属切削连续稳态成屑过程 ,以三角形元素进行有限元网络划分 ,采用 von- Mises屈服判据和 Prandtl- Reuss流动定律 ,对工件切屑进行弹塑性变形及受力分析 ,从切屑底层元素代表长的积累确定刀具切屑接触长度。实验研究表明 ,采用本方法确定的接触长度与实验结果具有很好的一致性更多还原

【Abstract】 A simulative analysis of a metal chip formation process in steady state was carried out to determine the tool chip contact length from the accumulation of the elementary representative length of the bottom layer of the chip. A triangular grid was adopted and the von Mises yield criterion and the Prandtl Reuss flow rule were used during the computer simulation. The experimental results showed that the value of contact length from the simulation had a good agreement with that from the experiments.更多还原