Pressure performance for a thin-walled ring and turbulent-jet orifice modeled elastic squeeze film damper

• DOI: 10.1016/j.cja.2022.01.021
• Publication Date: 2022-02-03T04:27:11Z
• Authors: Xiaomin YANG; Haisheng YANG; Yongcun CUI; Yan LI; Bingzhen JIANG; Sier DENG
• Keywords: Chamber pressure; Static pressure

This paper explores an analytical model for Elastic Ring Squeeze Film Damper (ERSFD) with thin-walled ring and turbulent-jet orifices, uncovers its Oil Pressure Performance (OFPP). Firstly, the deformation is addressed by using Fourier series expansion approach orifice outflow rate characterized Prandtl boundary layer theory. Secondly, applying finite difference scheme, influence of elastic flexibility, diameter, attitude angle on OFPP analyzed. Finally, Outer chamber pressure was measured experimentally at different rotor speeds. The results indicate that outer coats individual load-carrying region spreads symmetrically pertaining to angle. Its amplitude drops as flexibility decreases but boosts reduction diameter. For inner pressure, diameter effects a similar trend cavity, exhibits more stable distribution regarding Minimizing causes increase in amplitude. validated test giving shifts synchronously periodically variation angle, while increases slightly higher