| Experiment and finite element analysis of micromilling forc |
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| 作者姓名： | 孙雅洲 孟庆鑫 |
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| 作者单位： | School of Mechatronics Engineering，Harbin Engineering University，School of Mechatronics Engineering，Harbin Institute of Technology |
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| 基金项目： | 黑龙江省博士后科研启动基金 |
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| 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.
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| 关 键 词： | 细微研磨 研磨力 研磨参数 有限元方法 |
Experiment and finite element analysis of micromilling force |
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| SUN Ya-zhou,MENG Qing-xin.Experiment and finite element analysis of micromilling forc[J].Journal of Harbin Institute of Technology,2008,15(5):648-652. |
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| Authors: | SUN Ya-zhou MENG Qing-xin |
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| Affiliation: | 1. School of Mechatronies Engineering,Harbin Engineering University,Harbin 150001,China;School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China
2. School of Mechatronies Engineering,Harbin Engineering University,Harbin 150001,China |
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| Abstract: | 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 thermalmechanical 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. |
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| Keywords: | micromilling milling force milling parameter finite element method |
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