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基于分子動力學(xué)的金屬鈦納米切削過程研究
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沈陽航空航天大學(xué)機(jī)電工程學(xué)院,沈陽航空航天大學(xué)機(jī)電工程學(xué)院,沈陽航空航天大學(xué)機(jī)電工程學(xué)院,沈陽航空航天大學(xué)機(jī)電工程學(xué)院

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The Research of Titanium Nanometric Cutting Process Based on Molecular Dynamics
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School of Mechanic Engineering, Shenyang Aerospace University,School of Mechanic Engineering, Shenyang Aerospace University,School of Mechanic Engineering, Shenyang Aerospace University,School of Mechanic Engineering, Shenyang Aerospace University

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Project Implementation Supported by Shan Xi’s Patent (121004); Metallurgical Engineering Characteristic Professional Construction Project

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    摘要:

    本文采用基于分子動力學(xué)的仿真方法建立了金屬鈦納米切削分子動力學(xué)模型，選擇了有代表性的切削條件，通過仿真得到瞬間原子位置圖像并對切削過程中材料去除現(xiàn)象、加工表面形成過程、系統(tǒng)勢能和工件溫度等的變化進(jìn)行了分析。發(fā)現(xiàn)在金屬鈦的納米切削過程中切屑和加工表面是由于晶格能的釋放和位錯的不斷延伸擴(kuò)展形成的。已加工表面原子的彈性恢復(fù)和晶格重構(gòu)能夠減緩總勢能和溫度不斷增加的趨勢，并使其伴隨有微小波動。

    Abstract:

    Based on the molecular dynamics simulation (MDS) method, this article built up a molecular dynamics (MD) model of titanium nanometric cutting, chose representative cutting conditions, obtained the instantaneous image of atomic position through simulation and analyzed the material removal phenomenon, surface formation process, change rules of system potential energy and workpiece temperature in cutting process. It is found that the formation of the chips and the machined surface in cutting process are caused by the release of lattice energy and the lasting expansion of dislocation. The elastic recovery and lattice reconstruction of the machined surface and can slow down the increasing trend of total potential energy and temperature, and make them accompanied by slight fluctuations.

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朱瑛,張銀成,齊順河,向智.基于分子動力學(xué)的金屬鈦納米切削過程研究[J].稀有金屬材料與工程,2016,45(4):897~900.[zhu ying, zhang yin cheng, qi shun he, xiang zhi. The Research of Titanium Nanometric Cutting Process Based on Molecular Dynamics[J]. Rare Metal Materials and Engineering,2016,45(4):897~900.]
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  • 收稿日期:2014-03-03
  • 最后修改日期:2014-06-27
  • 錄用日期:2014-07-28
  • 在線發(fā)布日期: 2016-06-27
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