中北大学学报（自然科学版）2012，Vol.33Issue(4)：397-402,6.DOI:10.3969/j.issn.1673-3193.2012.04.010
立铣加工过程的三维有限元模拟
3D FEM Simulations of the End-Milling Process
摘要
Abstract
The simulation of the cutting process is substantially to use finite element method (FEM) to solve nonlinear problems.In order to establish a rational model of finite element simulation of metal cutting, 45 steel available for experiments is selected as the workpiece's material, and several key technologies in FE modeling including the material constitutive equation, the friction situations between the chip and tool, meshing and chip separation criteria are focused.Three-dimensional (3D) end-milling finite element model of 45 steel, which is much superior to that of orthogonal or oblique cutting and considers thermo-mechanical coupling in software ABAQUS, is built.The milling processes of 45 steel with high-speed steel milling cutter at the conventional speeds are dynamically simulated, and the chip shape and cutting force component curves are obtained, which coincides with the experimental results under the same cutting conditions as the simulations.This suggests that 3D finite element simulations of cutting processes can be truly achieved, thus the cutting forces in practice can be rapidly predicted.Furthermore, this will be a basis of the determination of the reasonable machining parameters or tool geometric parameters.The method of this study can also be extended to the 3D FEM simulations of the mechnical cutting process of other materials.关键词
铣削加工/三维/有限元模拟/切削力/切屑形状Key words
milling/ three-dimensional/ finite element simulation/ cutting force/ chip shape分类
矿业与冶金引用本文复制引用
杜茂华,李露露,白玉峰,王神送..立铣加工过程的三维有限元模拟[J].中北大学学报（自然科学版）,2012,33(4):397-402,6.基金项目
校人才培养基金资助项目(KKZ3201001007) （KKZ3201001007）
