Experiment and finite element analysis of micromilling force  

Experiment and finite element analysis of micromilling forc

作　　者：孙雅洲 孟庆鑫 

机构地区：[1]School of Mechatronics Engineering,Harbin Engineering University [2]School of Mechatronics Engineering, Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2008年第5期648-652,共5页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the Postdoctoral Foundation of Heilongjiang Province(Grant No.LRB05-222)

摘　　要：For predicting the milling force in process of micromilling aluminum alloy, the law for micromilling force changing under different milling parameters was studied. The elastic-plastic finite elelent model of micromilling was found using general commercial software. During modeling, the Johnson-Cook＇ s coupled thermal- mechanical model was used as workpieee material model, the Johnson-Cook＇ s shear failure principle was adopted as workpiece failure principle, and the coupled thermal-mechanical hexahedron strain hybrid modules and serf-adaptive grid technology based on the updated Lagrange formulation were used to mesh the workpiece＇ s elements, while the friction between tool and workpiece obeys the modified Coulomb＇ s law that combines with the sliding friction and the adhesive friction. By means of finite element analysis, the law for micromilling force changing under different milling parameters was obtained, and the results were analyzed and compared. Finally micromilling experiments were carried out to validate the results of simulation.For predicting the milling force in process of micromilling aluminum alloy, the law for micromilling force changing under different milling parameters was studied. The elastic-plastic finite elelent model of micromilling was found using general commercial software. During modeling, the Johnson-Cook’s coupled thermal-mechanical model was used as workpiece material model, the Johnson-Cook’s shear failure principle was adopted as workpiece failure principle, and the coupled thermal-mechanical hexahedron strain hybrid modules and self-adaptive grid technology based on the updated Lagrange formulation were used to mesh the workpiece’s elements, while the friction between tool and workpiece obeys the modified Coulomb’s law that combines with the sliding friction and the adhesive friction. By means of finite element analysis, the law for micromilling force changing under different milling parameters was obtained, and the results were analyzed and compared. Finally micromilling experiments were carried out to validate the results of simulation.

关 键 词：MICROMILLING milling force milling parameter finite element method 

分 类 号：TG501.2[金属学及工艺—金属切削加工及机床]