Molecular dynamics simulation of processing using AFM pin tool
Molecular dynamics simulation of processing using AFM pin tool
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DOI：
10.1016/j.apsusc.2005.09.005
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发表时间：
2006-08
影响因子：
6.7
通讯作者：
Yongda Yan;T. Sun;S. Dong;Xichun Luo;Yingchun Liang
中科院分区：
文献类型：
--
作者：
Yongda Yan;T. Sun;S. Dong;Xichun Luo;Yingchun Liang
采用三维分子动力学模型研究了刀具几何形状对工件变形过程的影响，并在原子尺度上揭示了变形过程的本质。结果表明，探针工具与工件表面之间存在不同的状态，即无磨损状态、犁削状态、犁削占主导地位的状态和切削占主导地位的状态。给出了工件变形过程与势能变化的关系。在工件的塑性变形区、弹性变形区和混合变形区等不同变形区中，原子的势能变化是不同的。讨论了势能变化的特点。
A three-dimensional molecular dynamics (MD) model is utilized to investigate the effect of tool geometry on the deformation process of the workpiece and the nature of deformation process at the atomic-scale. Results show that different states exist between the atomic force microscope (AFM) pin tool and the workpiece surface, i.e. the non-wear state, the ploughing state, the state in which ploughing is dominant and the state in which cutting plays a key role. A relationship between the deformation process of the workpiece and the potential energy variation is presented. The potential energy variation of atoms in different deformed regions in the workpiece such as plastically deformed region, elastically deformed region and the mixed deformation region is different. The features of variations of potential energy are discussed.