刀具幾何參數(shù)對(duì)金屬鈦納米切削影響的分子動(dòng)力學(xué)研究(英文)
[Abstract]:Based on the basic principle of molecular dynamics, the molecular dynamics simulation model of nano-cutting titanium was constructed. The embedded atomic potential (EAM (Embedded atom method),) is used between the workpiece atoms and the tool atoms. The Morse potential function is used to study the workpiece morphology and system potential energy in the process of titanium nano-cutting under the conditions of different cutting edge radius and cutting tool front angle. The change of cutting force and workpiece temperature. The results show that with the increase of the cutting edge radius, the surface roughness increases, the cutting force and workpiece temperature decrease, and the chip becomes thinner. When the tool front angle is increased from negative value to positive value, the compressive stress of titanium workpiece gradually changes to shear stress, and the positive front angle tool is more favorable for cutting. At the same time, the magnitude of tangential force and normal force also change significantly under different cutting tool front angles.
【作者單位】: 沈陽(yáng)航空航天大學(xué)機(jī)電工程學(xué)院;
【基金】:supported by Science Foundation of AVIC I,Project(No.2007ZE54011)
【分類(lèi)號(hào)】:TG501.1
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