Influence of vibration on mechanical polishing micro-structured surface using discrete element method

Q3 Engineering

International Journal of Machining and Machinability of Materials Pub Date : 2020-01-01 DOI:10.1504/ijmmm.2020.10025675

G. Wang, Bingrui Lv, Li Liu, B. Liu, Haibo Zhou

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引用次数: 0

Abstract

A model using discrete element method (DEM) was conducted to simulate vibration assisted mechanical polishing micro-structured surface process by particle flow code in three dimensions (PFC3D). The effect laws of vibration frequency and amplitude on abrasive grains and polishing force were researched in detail according to the simulation results. The effects of vibration on the particles average motion velocity in one fluid cell were researched, and the simulation results show that average velocity increases with increase of vibration frequency and amplitude on the whole. The effects of vibration on the unbalanced force acting on the workpiece surface were quantified at first. The changes of average unbalanced force obviously increase for low feed rate with increase of frequency and increase approximately linearly with increase of amplitude. It is concluded that vibration with high frequency and great amplitude can significantly increase machining efficiency and improve surface quality in micro-structured surface polishing.

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离散元法研究振动对机械抛光微结构表面的影响

采用三维粒子流程序(PFC3D)建立了基于离散元法(DEM)的振动辅助机械抛光微结构表面过程模拟模型。根据仿真结果，详细研究了振动频率和振幅对磨粒和抛光力的影响规律。研究了振动对单个液池内颗粒平均运动速度的影响，仿真结果表明，平均运动速度总体上随振动频率和振幅的增加而增大。首先量化了振动对作用在工件表面的不平衡力的影响。在低进给速度下，平均不平衡力的变化随频率的增加而明显增加，随振幅的增加而近似线性增加。结果表明，在微结构表面抛光中，高频大振幅振动能显著提高加工效率，改善表面质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Machining and Machinability of Materials Engineering-Industrial and Manufacturing Engineering

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： IJMMM is a refereed international publication in the field of machining and machinability of materials. Machining science and technology is an important subject with application in several industries. Parts manufactured by other processes often require further operations before the product is ready for application. Machining is the broad term used to describe removal of material from a workpiece, and covers chip formation operations - turning, milling, drilling and grinding, for example. Machining processes can be applied to work metallic and non metallic materials such as polymers, wood, ceramics, composites and special materials. Today, in modern manufacturing engineering, there has been strong renewed interest in high efficiency machining.