可倾瓦多孔质轴承-转子系统动力学特性的实验研究  

Experimental research on dynamic characteristics of tilting pad porous bearing-rotor system

作　　者：张治平 王建伟 安林 方攸同 陈玉辉 冯凯 ZHANG Zhi-ping;WANG Jian-wei;AN Lin;FANG Xiao-tong;CHEN Yu-hui;FENG Kai(School of Electrical Engineering,Zhejiang University,Hangzhou 310058,China;School of Mechanical and Transportation Engineering,Hunan University,Changsha 410082,China;State Key Laboratory of Air-conditioning Equipment and System Energy Conservation,Zhuhai 519070,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310058 [2]湖南大学机械与运载工程学院,湖南长沙410082 [3]空调设备及系统运行节能国家重点实验室,广东珠海519070

出　　处：《振动工程学报》2022年第3期707-716,共10页Journal of Vibration Engineering

摘　　要：基于可倾瓦多孔质轴承搭建了可倾瓦多孔质轴承-转子系统实验台。在分析多孔质可倾瓦渗透特性的基础上,研究了不同供气方式、不同供气压力和不同转子不平衡量等因素对该轴承-转子系统动力学性能的影响。研究表明:多孔质轴瓦的渗透率与供气压力无关;转子同步振动的临界转速随着轴承整体供气压力增加而减小,临界共振振幅随供气压力增加而变大;增加上轴瓦组供气压力对转子的同步振动影响较小,对次同步振动有一定的抑制作用;转子振幅随下轴瓦组供气压力增加而增大,临界共振转速随下轴瓦供气压力增加而减小;转子不平衡量可以激发转子次同步振动的出现。Based on the spherical hinged tilting pad porous bearing,a tilting pad bearing porous-rotor system text rig is built.On the basis of analyzing the permeability characteristics of the porous tilting pad,the influence of different air supply modes,air pressures and rotor imbalances on the dynamic performance of the bearing-rotor system are studied.Research shows that:the permeability of the porous bearing is independent of the supply pressure;the critical speed of synchronous vibration of the rotor decreases and the critical resonance amplitude increases with the increase of the air pressure providing to the bearing as a whole;increasing the supply pressure of the upper bearing bush has little effect on the synchronous vibration of the rotor,and has a certain inhibitory effect on the sub-synchronous vibration;the rotor amplitude increases with the increase of the pressure of the lower bearing group,and the critical resonance speed changes oppositely;the rotor sub-synchronous vibration can be excited by the rotor unbalance.

关 键 词：转子动力学 可倾瓦多孔质轴承 供气压力 动力学性能 振动特性 

分 类 号：O347.6[理学—固体力学] TH133.3[理学—力学]