配合关系对弹性环式挤压油膜阻尼器减振特性的影响

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.