期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 48, 期 46, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/0022-3727/48/46/465308
关键词
tribology; grinding; multiple particle abrasion; surface topography; molecular dynamics; run-in
资金
- Austrian COMET-Program (Project K2, XTribology) [849109]
- Province of Niederosterreich (Project 'SaPPS') [WST3-T-8/028-2014]
In this work we perform molecular dynamics simulations to quantify and parametrize the evolution of a bcc Fe work piece topography during nanometric grinding with multiple hard abrasive particles. The final surface quality depends on both the normal pressure and the abrasive geometry. We fit the time development of the substrate's root mean squared roughness to an exponential function, allowing the definition of a run-in regime, during which the surface 'forgets' about its initial state, and a steady-state regime where the roughness no longer changes. The time constants associated with smoothing and material removal are almost inversely proportional to each other, highlighting the distinctiveness of these two simultaneously occurring processes. We also describe an attempt to reduce the time required to achieve the smoothest possible surface finish by periodically re-adjusting the normal pressure during the grinding process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据