摘要
刀屑摩擦因数的取值对工件已加工表面残余应力分布的有限元仿真结果影响很大,但一般有限元仿真软件并没有提供刀屑摩擦因数的确定方法。为此,提出了一种基于AdvantEdge FEM软件仿真实验数据,并结合车削实验及残余应力测定结果估计刀屑摩擦因数的方法。与AdvantEdge FEM软件默认的摩擦因数相比,按照该方法计算出的摩擦因数仿真所得到的车削工件的残余应力分布与实验测定的残余应力分布更为接近。
The friction coefficient between chip and tool rake face has a significant impact on residual stress distribution on workpiece surface in FEM simulations, but general FEM softwares do not provide a method for determining the friction coefficient. As for this problem,a method for estimating the average tool-chip friction coefficient was proposed herein by using AdvantEdge FEM simulations, turning experimental results and the residual stress distribution. The residual stress distribution simulated by the friction coefficient which was calculated with the method mentioned above is closer to experimental residual stress distribution, compared with the AdvantEdge FEM default friction coeffi- cient.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2014年第8期1006-1009,1016,共5页
China Mechanical Engineering
基金
国家科技支撑计划资助项目(2012BAF08B01)
关键词
切削加工
残余应力
刀屑摩擦因数
有限元仿真
cutting process
residual stress
tool-chip friction coefficient
FEM simulation
