基于ABAQUS的带状切屑有限元仿真研究

稳态金属切削过程中，若形成可断带状切屑，可以得到较好的表面质量。为研究带状切屑的形成过程，采用Johnson-Cook材料模型，利用任意拉格朗日欧拉网格算法(ALE)实现切屑分离，建立二维正交自由切削模型。有限元仿真获得带状切屑形成时的切削力、切削应力及能耗变化趋势，并对相关数据进行处理。通过分析不同刀一屑摩擦因数对切削过程影响规律，切削力变化趋势预测，切削各阶段对应力场影响的判断，切削过程中总能量变化情况等，初步揭示第一变形区弹性变形规律。研究为进一步揭示带状切屑的形成机理奠定基础，对金属切削实践具有一定的指导意义。

Finite Element Simulation of Strip Chip Cutting Based on ABAQUS

The good surface quality can be obtained by the formation of the broken ribbon chip in the steady metal cutting. In order to explore the formation mechanism of strip chip, a two-dimensional orthogonal cutting model was used with Johnson-Cook material model and Arbitrary Lagrange Euler method ( ALE) as the chip separation. The cutting force, stress and energy consumption of the chip forming process were obtained by finite element simulation, and the related data were processed scientifically. Through the analysis of the effects of different tool chip friction coefficients on the cutting process, cutting force variation trend prediction, the effect on stress field in different cutting stage and the change of the total energy in cutting process, revealed the elasticity deformation law of the primary deformation zone.This study lays a foundation for further research on the formation mechanism of the strip chip, and the research results have certain guiding significance for the practice of metal cutting.