作　　者： ; ;

机构地区： 华南理工大学

出　　处： 《工具技术》 2011年第2期60-63,共4页

摘　　要： 基于热弹塑性有限元理论在DEFORM3D软件中建立正交切削加工有限元模型。建模过程中考虑了工件材料本构关系、局部网格自动重划分、刀屑摩擦、切屑分离等影响切削仿真的关键因素,分析了切削过程中工件等效应力的分布。对工件在不同切削速度下的残余应力进行分析和比较,得出两者之间的定性影响关系。 Based on thermo-elastic-plastic FEM, the finite element model of orthogonal cutting was established in DEFORM3D codes. Key factors affecting the cutting simulation such as constitutive relation of workpiece, local automatic remeshing, the criterion of chip separation and the friction between tool and chip were considered during the process of modeling. The equiva- lent stress distribution of workpiece during the cutting process was studied. The qualitative relation between cutting speed and workpiece residual stress was obtained after residual stress from different cutting speed had been analysed and compared.

关 键 词： 热弹塑性 有限元 残余应力 切削速度

领　　域： [金属学及工艺]