O型圈对多孔质轴承-转子实验台稳定性的影响

doi:10.3901/JME.2025.05.117

机械工程学报 ›› 2025, Vol. 61 ›› Issue (5): 117-125.doi: 10.3901/JME.2025.05.117

• 特邀专栏：高性能静压轴承 • 上一篇

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O型圈对多孔质轴承-转子实验台稳定性的影响

张康¹, 胡海东¹, 郭明慧¹, 崔海龙², 黄禹¹, 荣佑民¹

1. 华中科技大学机械科学与工程学院武汉 430074;
2. 中国工程物理研究院机械制造工艺研究所绵阳 621900

收稿日期:2024-03-05 修回日期:2024-08-11 发布日期:2025-04-15
作者简介:张康，男，1995年出生，博士研究生。主要研究方向为气浮轴承、高精密气浮平台。E-mail：1468697432@qq.com;黄禹(通信作者)，男，1972年出生，博士，教授，博士研究生导师。主要研究方向为高性能流体静压支承技术与超精密机床、激光加工技术与装备。E-mail：yuhuang_hust@hust.edu.cn
基金资助:
国家重点研发计划(2020YFB2007600)、四川省自然科学基金(2023NSFSC1947)和中国工程物理研究院院长基金(2023NSFSC1947)资助项目。

Effects from O-rings on the Stability of a Rotor-porous Air Journal Bearing Test-rig

ZHANG Kang¹, HU Haidong¹, GUO Minghui¹, CUI Hailong², HUANG Yu¹, RONG Youmin¹

1. School of Mechanical Science and Engineering, Huazhong University of Science & Technology, Wuhan 430074;
2. Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900

Received:2024-03-05 Revised:2024-08-11 Published:2025-04-15

摘要/Abstract

摘要： 对采用O型圈作为阻尼结构的多孔质轴承-转子实验台进行了测试和稳定性评估。系统性地阐述了多孔质轴承及其所构成系统的工作原理。通过激振实验测试了不同材料O型圈的动态刚度和阻尼值，数据表明O型圈材料的刚度越大，其阻尼值也会越大。通过转子实验研究了旋转速度、供气压力和O型圈材料等参数对多孔质系统稳定性的影响。实验结果表明供气压力变化对转子中心的同步振动幅值影响很小，但增大供气压力可以抑制转子在高转速时产生的次同步振动。用VMQ(硅橡胶)制作的O型圈所在系统的稳定性最好，转子在17～27 kr/min的高转速区间时，能维持同步振幅约仅1μm的稳定旋转；SBR(丁苯橡胶)系统的稳定性最差，在低供气压力时转子容易产生次同步振动，同步振动的幅值也偏大；HNBR(氢化丁腈橡胶)系统的稳定性介于两者之间，这说明不同材料的O型圈对多孔质轴承-转子系统稳定性影响存在明显差异。

关键词: O型圈, 多孔质轴承, 转子稳定性, 实验分析

Abstract: Testing and stability evaluation are conducted on a rotor-porous air journal bearing test-rig with O-rings as the damping structure. The working principle of porous air journal bearings and the system is systematically elaborated. The dynamic stiffness and damping values of O-rings made by different material are tested by the excitation experiment. The data shows that the greater the stiffness of the O-ring, the greater its damping value. The effects of parameters such as rotational speed, gas supply pressure and O-ring material on the system stability are studied by the rotor experiment. The results show that the change of the supply pressure has a low effect on the amplitude of synchronous vibration at the rotor center, but increasing the supply pressure can suppress the subsynchronous vibration generated by the rotor at high speeds. The VMQ (methyl vinyl silicone rubber) system has the best stability, and the rotor can maintain 1 μm synchronous amplitude at high speed 17～27 kr/min. The stability of the SBR (styrene butadiene rubber) system is the worst, because the rotor is prone to produce subsynchronous vibration at low supply pressure, and the amplitude of synchronous vibration is also too large. The stability of the HNBR (hydrogenated nitrile butadiene rubber) system is moderate. The results indicate that there are significant differences for the above three O-rings in influencing the stability of the system.

Key words: O-rings, porous air journal bearings, rotor stability, experimental analysis

中图分类号:

TH133

张康, 胡海东, 郭明慧, 崔海龙, 黄禹, 荣佑民. O型圈对多孔质轴承-转子实验台稳定性的影响[J]. 机械工程学报, 2025, 61(5): 117-125.

ZHANG Kang, HU Haidong, GUO Minghui, CUI Hailong, HUANG Yu, RONG Youmin. Effects from O-rings on the Stability of a Rotor-porous Air Journal Bearing Test-rig[J]. Journal of Mechanical Engineering, 2025, 61(5): 117-125.

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O型圈对多孔质轴承-转子实验台稳定性的影响

Effects from O-rings on the Stability of a Rotor-porous Air Journal Bearing Test-rig

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