配合关系对弹性环式挤压油膜阻尼器减振特性的影响  

Effect on vibrating attenuation by the fit of elastic ring squeeze film damper

作　　者：李岩[1] 廖眀夫 王四季[1] LI Yan;LIAO Mingfu;WANG Siji(School of Power and Energy,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西北工业大学动力与能源学院,西安710072

出　　处：《振动与冲击》2020年第11期232-238,共7页Journal of Vibration and Shock

基　　金：国家科技重大专项(2017-IV-0001-0038)。

摘　　要：为了研究配合关系对弹性环式挤压油膜阻尼器减振特性的影响,搭建了带弹性环式挤压油膜阻尼器的转子实验系统,设计了两套弹性环组件。通过改变弹性环凸台的配合关系及转子的不平衡质量,实验研究了弹性环式挤压油膜阻尼器的减振特性。实验结果表明:弹性环的内凸台为过盈配合时可能导致阻尼器减振失效,为间隙配合时减振效果更好;外凸台配合关系的变化不会导致阻尼器减振失效;凸台为间隙配合时,弹性环的减振效果及转子的响应与不平衡质量的关系线性度更高。提出了设计与应用弹性环式挤压油膜阻尼器时,应保证内凸台为间隙配合的设计建议。In order to investigate the influence on vibrating attenuation by the fit of elastic ring squeeze film damper(ERSFD),a rotor system with ERSFD was constructed,and two ERSFD components were designed.By changing the fit of pedestals on elastic ring and the unbalance of the rotor,the vibration reduction characteristics of each state of the elastic rings were experimentally investigated.The results show that the performance of ERSFD may lead to failure when inner pedestals is interference fitted,and becomes better when clearance fitted;there is no damping failure risk of ERSFD when the fitting on outer pedestals is changing;the damping effect of ERSFD and the response characteristic of rotor can be more linear when the pedestals of elastic rings are clearance fitted.It is suggested that inner pedestals of the elastic ring should be clearance fitted when designing and using ERSFD.

关 键 词：挤压油膜阻尼器 弹性环 配合关系 机械振动 减振特性 

分 类 号：V231.96[航空宇航科学与技术—航空宇航推进理论与工程] TH133.3[机械工程—机械制造及自动化]