基于分子动力学的纳米压痕虚拟仿真教学设计
The Design of the Nano-Indentation Virtual Simulation Based on Molecular Dynamics Algorithm
DOI: 10.12677/AE.2021.115272, PDF, 下载: 541  浏览: 1,531  科研立项经费支持
作者: 杨 亮, 邓乔元, 战光辉, 林仕伟*：海南大学材料与工程学院，海南 海口
关键词: 纳米压痕实验；虚拟仿真；物理算法；分子动力学；实验教学；Nano-Indentation Experiment； Virtual Simulation； Physical Algorithms； Molecular Dynamics； Experimental Teaching
摘要: 纳米压痕实验作为一种材料表面测试手段已经应用十分广泛，但由于经费问题该实验项目很少能引入本科实验教学，不利于新工科学生的能力的培养和素质的提高。为使学生了解纳米压痕实验，采用Unity3D构造纳米压痕虚拟仿真仪器，实现高交互仪器仿真和采用分子动力学算法引入铜的EAM嵌入原子势函数进行FCC结构铜单晶的微观纳米压痕仿真实验，通过采集载荷–位移曲线和三维可视化原子位置的演化、原子受力等数据直观向学生展示了金属铜在压头作用下微观结构的变化。通过外推实验微观表面模型、实验测试条件和压头形状和尺寸，可丰富实验教学内容、提高教学质量，有利于培养学生的创新意识和探索精神。
Abstract: Nano-indentation experiment has been widely used as a material surface testing method, but because of the financial problems, the experimental project can rarely introduce undergraduate experimental teaching, which is not conducive to the training of the ability and quality of new engineering students. In order to enable students to master nano-indentation technology, the virtual simulation instrument of nano-indentation is constructed by Unity3D software, the simulation of high interactive instrument and the micro-nano-indentation simulation experiment of FCC structure copper by introducing copper EAM potential function using molecular dynamics algorithm are realized, and the microstructure changes of metal copper under probe are shown visually by collecting data such as load-displacement curve and three-dimensional visual atomic position evolution and atomic force. By extrapolating the surface microscopic model, experimental test conditions and probe shape and size, it can enrich the experimental teaching content, improve the teaching quality, and plays an important role to cultivate students' innovative consciousness and exploration spirit.
文章引用：杨亮, 邓乔元, 战光辉, 林仕伟. 基于分子动力学的纳米压痕虚拟仿真教学设计[J]. 教育进展, 2021, 11(5): 1752-1761. https://doi.org/10.12677/AE.2021.115272

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