电流变液静压导轨系统静动态特性研究

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (22) : 24-30.

论文

电流变液静压导轨系统静动态特性研究

胡均平1，刘成沛1，郭勇2，梁向京1

作者信息 +

Static and dynamic characteristics of hydrostatic guideway system based on electrorheological fluid

HU Jun-ping1, LIU Cheng-pei1, Guo Yong2, Liang Xiang-jing1

Author information +

文章历史 +

摘要

研究了一种以电流变液为润滑介质的静压导轨系统静动态特性。利用液阻网络理论，在分析电场强度与电流变液粘性关系，综合考虑关联参数的基础上，建立了电流变液静压导轨系统的CFD计算数值模型。根据摄动理论，利用Fluent动网格技术，研究了在不同工作变量下电流变液静压导轨的静动态特性。研究结果表明：电场强度、负载因素与初始压力比等工作变量均会对电流变液静压导轨系统性能带来影响；电场强度增强会使系统流量减小，阻尼系数增大，但不会对系统静刚度带来影响；改变切削力载荷频率，导轨系统会出现共振现象，增强电场强度可显著提高系统动刚度，抑制共振时的最大振幅。实验结果与仿真数值一致，为电流变液静压导轨的设计应用提供了理论参考依据。

Abstract

The static and dynamic characteristics of hydrostatic guideway based on lubricating medium of electrorheological fluid are studied. Computational fluid dynamics numerical model is established based on correlation parameters using hydraulic resistance network theory and considering influence of electric field intensity versus characteristics of electrorheological fluid. The static and dynamic characteristics of hydrostatic guideway based on electrorheological fluid under different working variables are studied using Fluent dynamic mesh technology according to perturbation theory. Research results show that: Static and dynamic characteristics of hydrostatic guideway system can be influenced by electric filed intensity, load factor and initial pressure ratio; The system flow rate will decrease, damping coefficient will increase while system stiffness will remain unchanged when the electric filed intensity is enhanced under the condition that initial design parameters and load factors are unchanged; Resonance phenomenon of the guideway system will be occurred when cutting force frequency is changed. Vibration under resonance phenomenon can be suppressed and dynamic stiffness will be increased significantly by enhancing electric filed intensity. The simulation results are in agreement with the experimental results, which provide a theoretical reference for the design and application of hydrostatic guideway.

导出引用

胡均平1，刘成沛1，郭勇2，梁向京1. 电流变液静压导轨系统静动态特性研究[J]. 振动与冲击, 2016, 35(22): 24-30

HU Jun-ping1, LIU Cheng-pei1, Guo Yong2, Liang Xiang-jing1. Static and dynamic characteristics of hydrostatic guideway system based on electrorheological fluid[J]. Journal of Vibration and Shock, 2016, 35(22): 24-30

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