| Multiscale simulation of nanometric cutting of single crystal copper —— effect of different cutting speeds |
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| 引用本文： | Hongmin PEN,Qingshun BAI,Yingchun LIANG,Mingjun CHEN. Multiscale simulation of nanometric cutting of single crystal copper —— effect of different cutting speeds[J]. 金属学报(英文版), 2009, 22(6): 440-446. DOI: 10.1016/S1006-7191(08)60121-0 |
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| 作者姓名： | Hongmin PEN Qingshun BAI Yingchun LIANG Mingjun CHEN |
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| 作者单位： | School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| 基金项目： | Acknowledgements--This work was supported by National Natural Science Foundation of China （Nos.50675050 and 50705023） and Outstanding Youth Science Foundation of Heilongjiang Province （No.JC200614）. |
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| 摘 要： |
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| 关 键 词： | 切割速度 纳米切削 单晶铜 多尺度 模拟 分子动力学方法 变形机制 有限元方法 |
| 收稿时间： | 2008-12-22 |
| 修稿时间： | 2009-06-30 |
Multiscale simulation of nanometric cutting of single crystal copper-effect of different cutting speeds |
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| Hongmin PEN,Qingshun BAI,Yingchun LIANG,Mingjun CHEN. Multiscale simulation of nanometric cutting of single crystal copper-effect of different cutting speeds[J]. Acta Metallurgica Sinica(English Letters), 2009, 22(6): 440-446. DOI: 10.1016/S1006-7191(08)60121-0 |
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| Authors: | Hongmin PEN Qingshun BAI Yingchun LIANG Mingjun CHEN |
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| Affiliation: | School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | A multiscale simulation has been performed to determine the effect of the cutting speed on the deformation mechanism and cutting forces in nanometric cutting of single crystal copper. The multiscale simulation model, which links the finite element method and the molecular dynamics method, captures the atomistic mechanisms during nanometric cutting from the free surface without the computational cost of full atomistic simulations. Simulation results show the material deformation mechanism of single crystal copper greatly changes when the cutting speed exceeds the material static propagation speed of plastic wave. At such a high cutting speed, the average magnitudes of tangential and normal forces increase rapidly. In addition, the variation of strain energy of work material atoms in different cutting speeds is investigated. |
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| Keywords: | Multiscale simulation Nanometric cutting Single crystal copper Propagation speed of plastic wave |
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