一维振动式滚磨光整加工颗粒流场的离散元模拟分析

郭鹏辉; 李文辉; 李秀红; 杨胜强; 李鹏

doi:10.13433/j.cnki.1003-8728.20200191

一维振动式滚磨光整加工颗粒流场的离散元模拟分析

doi: 10.13433/j.cnki.1003-8728.20200191

郭鹏辉^{1, 3,},
李文辉^{2, 3, ,},
李秀红^{1, 3},
杨胜强^{1, 3},
李鹏^{1, 3}

1.
太原理工大学机械与运载工程学院, 太原 030024
2.
太原理工大学航空航天学院, 太原 030024
3.
精密加工山西省重点实验室, 太原 030024

基金项目:

国家自然科学基金项目 51875389

国家自然科学基金项目 51975399

山西省自然科学基金项目 201801D111002

详细信息

作者简介:
郭鹏辉(1994-), 硕士研究生, 研究方向为精密零件表面光整加工, 939135916@qq.com

通讯作者:
李文辉, 教授, 博士生导师, wenhui_li7190@126.com

中图分类号: TH164;TP391.9
计量
- 文章访问数: 92
- HTML全文浏览量: 19
- PDF下载量: 19
- 被引次数: 0
出版历程
- 收稿日期: 2019-03-25
- 刊出日期: 2021-07-01

Discrete Element Simulation Analysis of Particle Flow Field in One-dimensional Vibration Barrel Finishing

GUO Penghui^{1, 3
,},
LI Wenhui^{2, 3
, ,},
LI Xiuhong^{1, 3},
YANG Shengqiang^{1, 3},
LI Peng^{1, 3}

1.
College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
College of Aeronautice and Astronautics, Taiyuan University of Technology, Taiyuan 030024, China
3.
Shanxi Key Laboratory of Precision Machining, Taiyuan 030024, China

摘要

摘要: 为研究一维振动式滚磨光整加工中不同振幅、频率、筒宽下的颗粒流场分布及运动特征, 基于离散元法对滚磨光整加工过程进行数值模拟与分析。研究发现: 加工过程中, 颗粒群可根据颗粒位置分为上中下三层, 上层颗粒速度波动较大, 且在一段时间后, 颗粒速度会处于动态平衡状态; 中层和底层颗粒速度始终在一定范围内波动, 且具有周期性; 不同层域的颗粒开始运动后都会有爬升, 一段时间后处于动态平衡, 上层颗粒的爬升值最大, 底层颗粒的爬升值最小; 随着频率和振幅增加, 颗粒的爬升高度增加; 筒宽越宽, 爬升高度越小。
- 滚磨光整 /
- 一维振动式 /
- 颗粒流场 /
- 离散元模拟
Abstract: In order to study the particle flow field distribution and movement characteristics under different amplitudes, frequencies and barrel widths in one-dimensional vibratory barrel finishing, the numerical simulation and analysis of the barrel finishing process are carried out based on discrete element method. The study finds that the particle group in processing is divided into upper, middle and lower layers according to the position of the particles. The particle velocity of the upper layer fluctuates greatly, and after a period of time, the particle velocity will be in a dynamic equilibrium state; the particle velocity of the middle and bottom layers is always constant fluctuation in the range and periodicity; particles in different layers will climb after they start to move, and they will be in dynamic equilibrium after a period of time. The upper layer particles have the largest climb value and the bottom layer particles have the smallest climb value. As the frequency and amplitude increase, the climbing height of the particles increases; the wider the tube width, the smaller the climbing height.
- mass fishing /
- one-dimensional vibration /
- particle flow field /
- discrete element simulation

HTML全文

图 1 封闭式圆柱体滚筒形状

下载: 全尺寸图片幻灯片

图 2 上中下层颗粒位置

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图 3 不同层域颗粒速度随时间变化图

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图 4 数据块位置

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图 5 不同参数下Z方向不同深度颗粒速度变化

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图 6 颗粒位置坐标图

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图 7 不同层域颗粒的Z方向坐标变化

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图 8 不同参数下的爬升高度

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表 1 离散元模拟的参数设置

参数名称	颗粒	滚筒
材料	Al₂O₃	103
泊松比	0.21	0.28
剪切模量/GPa	124	3.2
密度/(kg·m^-3)	2.675	1.150

下载: 导出CSV

表 2 接触参数设置

参数名称	颗粒-颗粒	颗粒-滚筒
碰撞回复系数	0.55	0.36
静摩擦系数	0.3	0.3
滚动摩擦系数	0.15	0.15

下载: 导出CSV

参考文献(17)

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