Pressure characteristics of squeeze film damper with thin-walled ring-turbulent jet orifice
YANG Xiaomin1, YANG Haisheng1, CUI Yongcun1, LI Yan1, JIANG Bingzhen2, DENG Sier1
1.School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003；
2.College of Ocean Engineering, Guilin University of Electronic Technology, Beihai 536000
Abstract：In order to uncover the Oil Film Pressure Performance (OFPP) for Elastic Ring Squeeze Film Damper (ERSFD), a thin-walled ring and turbulent-jet orifice model was proposed. The ring deformation and orifice outflow rate are addressed respectively by applying planar thin-ring bending theory and the Prandtl boundary layer theory. The influence of elastic ring flexibility, orifice diameter, and attitude angle on the OFPP was analyzed, with outer chamber pressure measured at different rotor speeds. The results indicate that the outer chamber pressure drops as the elastic ring flexibility decreases but boosts with the reduction of the orifice diameter. For inner chamber pressure, the orifice diameter effects a similar trend to the outer cavity, but minimizing the elastic ring flexibility causes an increase in amplitude. The experiment shows that the outer chamber pressure shifts synchronously and periodically with the attitude angle, while the amplitude increases slightly at higher rotor speeds.
杨小民1，杨海生1，崔永存1，李彦1，蒋炳珍2，邓四二1. 薄环-紊动射流小孔挤压油膜阻尼器压力特性[J]. 振动与冲击, 2023, 42(9): 151-160.
YANG Xiaomin1, YANG Haisheng1, CUI Yongcun1, LI Yan1, JIANG Bingzhen2, DENG Sier1. Pressure characteristics of squeeze film damper with thin-walled ring-turbulent jet orifice. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(9): 151-160.
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