基于数值模拟的小孔节流空气静压轴承静动态特性研究

doi:10.3901/JME.2016.09.116

机械工程学报 ›› 2016, Vol. 52 ›› Issue (9): 116-121.doi: 10.3901/JME.2016.09.116

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基于数值模拟的小孔节流空气静压轴承静动态特性研究

崔海龙, 岳晓斌, 张连新, 夏欢, 雷大江

中国工程物理研究院机械制造工艺研究所绵阳 621900

出版日期:2016-05-05 发布日期:2016-05-05
作者简介:崔海龙(通信作者),男,1989年出生,博士研究生,工程师。主要研究方向为基于数值模拟的静压支承优化设计。E-mail：cuihailong61@foxmail.com;岳晓斌,男,1969年出生,研究员。主要研究方向为超精密加工装备的研发。E-mail：yuexbin@sohu.com
基金资助:
国家科技重大专项资助项目(2013ZX04006011)

Static and Dynamic Characteristics of Aerostatic Bearing Based on Numerical Simulation

CUI Hailong, YUE Xiaobin, ZHANG Lianxin, XIA Huan, LEI Dajiang

Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900

Online:2016-05-05 Published:2016-05-05

摘要/Abstract

摘要： 为了提高小孔节流空气静压轴承的静动态性能,基于流体力学和固体力学的基本控制方程,建立小孔节流空气静压轴承双向流固耦合数值模拟模型;采用静态数值模拟方法获取了设计参数对承载力和刚度的影响规律,进一步对微气膜间隙内三维流场特性进行了分析,有效降低了微气膜间隙内气体冗余现象对空气静压轴承动态稳定性的影响,并在数值计算的基础上对空气静压轴承结构和工作参数进行优化设计;在气体静压试验平台上对自行研制的空气静压轴承进行静动态特性测试。试验结果表明：所提出的数值模拟方法具有很好的预测效果;所采用的优化设计方法能够显著提升空气静压主轴的静动态特性。

关键词: 动态特性, 静态特性, 空气静压轴承, 流固耦合, 小孔节流

Abstract: In order to improve the static and dynamic performance of orifice aerostatic bearing, the numerical simulation model of two-way fluid-structure interaction of orifice aerostatic bearing is established based on the basic equations of fluid mechanics and solid mechanics. The influence of design parameters on load capacity and stiffness of orifice aerostatic bearing is achieved by the method of static numerical simulation. Three-dimensional flow field characteristics of the micro gas film gap are analyzed. The impact of gas redundancy phenomenon on dynamic stability of orifice aerostatic bearing is reduced effectively. The structure and operating parameters of aerostatic bearing are optimized based on the results of numerical simulation. The static and dynamic characteristics of aerostatic bearing are also tested. The experimental results show that characteristics of aerostatic bearing are predicted accurately by numerical simulation method proposed. The static and dynamic performance of aerostatic bearing can be improved significantly by the optimization design method proposed.

Key words: aerostatic bearing, dynamic characteristics, fluid-structure interaction, orifice, static characteristics

中图分类号:

TH117

崔海龙, 岳晓斌, 张连新, 夏欢, 雷大江. 基于数值模拟的小孔节流空气静压轴承静动态特性研究[J]. 机械工程学报, 2016, 52(9): 116-121.

CUI Hailong, YUE Xiaobin, ZHANG Lianxin, XIA Huan, LEI Dajiang. Static and Dynamic Characteristics of Aerostatic Bearing Based on Numerical Simulation[J]. Journal of Mechanical Engineering, 2016, 52(9): 116-121.

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基于数值模拟的小孔节流空气静压轴承静动态特性研究

Static and Dynamic Characteristics of Aerostatic Bearing Based on Numerical Simulation

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