Pressure characteristics of squeeze film damper with thin-walled ring-turbulent jet orifice

被引：0
作者：
Yang X. [1 ]
Yang H. [1 ]
Cui Y. [1 ]
Li Y. [1 ]
Jiang B. [2 ]
Deng S. [1 ]
机构：
[1] School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang
[2] College of Ocean Engineering, Guilin University Oi Electronic Technology, Beihai
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 09期
关键词：
aero-engine; elastic; ring squeeze film damper( ERSFD); orifice; thin-walled ring; turbulent jet;
D O I：
10.13465/j.cnki.jvs.2023.09.017
中图分类号：
学科分类号：
摘要：
Here,to study oil film pressure characteristics of a single-layer elastic, ring squeeze film damper (ERSFD) , a thin-walled ring-turbulent jet orifice model was established. Deformation of elastic ring and net flow rate at orifice outlet were calculated using the plane thin-walled ring bending theory and Prandtl boundary layer theory, respectively. Effects of elastic ring flexibility, orifice diameter and precession angle on oil film pressure characteristics were analyzed. Measurement tests for outer chamber oil film pressure under multi-rotating speed were conducted. The results showed that outer chamber oil film pressure decreases with decrease in flexibility of elastic ring, but increases with decrease in orifice diameter ; effects of orifice diameter on inner chamber oil film pressure are similar to those on outer chamber oil film pressure,but decrease in elastic ring flexibility causes increase in inner chamber oil film pressure ; outer chamber oil film pressure changes periodically in sync with azimuth angle under different rotating speeds, while pressure amplitude increases slightly under high rotating speeds. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：151 / 160
页数：9
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