Experimental study of suppressing the unbalanced response vibration of rotor system with a G-type integral squeeze film damper

• 来源期刊: 高技术通讯（英文版）
• 年，卷（期）: 2021,（1）
• 页码范围: 1-9
• 页数: 9页
• 语种: 英文
• DOI: 10.3772/j.issn.1006-6748.2021.01.001

摘要

Conventional squeeze film dampers have numerous challenges including lock up,bistable re-sponse and incoordinate precession.In order to resolve these nonlinear problems,a novel G-type in-tegral squeeze film damper(GISFD)is proposed in this research.The experimental test rig is pro-vided to investigate the rotor system with an unbalanced single disk.Numerical simulation results show that the structural design of GISFD is reasonable,which can ensure its safe and stable opera-tion.The influence of different support stiffnesses on the first-order speed of the rotor system is ana-lyzed.Experimental results show that GISFD can effectively suppress the unbalanced response vibra-tion of the rotor.In a certain range,it is found that the suppression effect of GISFD increases with the increase in the kinematic viscosity of the damping fluid.When the silicone oil with kinematic viscosity coefficients v =30.0 cm2/s is employed,the vibration reduction of GISFD is approximately 71.51％.Furthermore,the experimental results show that with the increase of the unbalance,there is a linear relationship between the unbalance and the corresponding amplitude of the unbalanced re-sponse.It is concluded that GISFD has excellent linear damping characteristics and reduces the sen-sitivity of the rotor system to the unbalanced mass.