基于应变梯度理论的微槽铣削顶端毛刺仿真与实验研究  

Simulation and Experimental Study on Top Burr of Micro-Groove Milling Based on Strain Gradient Theory

作　　者：王全意 丁辉[1] 程凯[1] 赵亮 WANG Quan-yi;DING Hui;CHENG Kai(Harbin Institute of Technology,Harbin 150001)

机构地区：[1]哈尔滨工业大学精密工程研究所

出　　处：《航空精密制造技术》2019年第5期7-11,共5页Aviation Precision Manufacturing Technology

基　　金：科学挑战计划资助项目(TZ2018006)

摘　　要：通过编写用户材料子程序Vumat将修正的本构模型应用于Abaqus微槽铣削仿真,研究工件材料的尺寸效应对微槽顶端毛刺尺寸的影响,并与实验结果进行对比。结果表明,修正的本构模型可以更好地体现微槽铣削过程中材料的尺寸效应,提高了有限元仿真的精度。The modified constitutive model was applied to the Abaqus micro-groove milling simulation by writing the user material subroutine Vumat. The effect of the size effect of the workpiece material on the burr size of the microgroove was studied and compared with the experimental results. The results show that the modified constitutive model can better reflect the size effect of the material in the micro-groove milling process and improve the accuracy of the finite element simulation.

关 键 词：微槽铣削 应变梯度塑性理论 顶端毛刺 尺寸效应 

分 类 号：TG54[金属学及工艺—金属切削加工及机床]