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ARTICLE
Analysis of dynamic characteristics of a sealed ends squeeze film damper considering the fluid inertia force
| 1 | School of Aero-engine, Shenyang Aerospace University, Shenyang, China |
| 2 | Liaoning Key Laboratory of Advanced Measurement and Test Technology for Aircraft Propulsion System, School of Economics and Management, Tongji University, ShangHai, China |
CORRESPONDING AUTHOR
Submission date: 2022-10-13
Final revision date: 2023-03-10
Acceptance date: 2023-03-10
Online publication date: 2023-05-29
Publication date: 2023-07-31
Journal of Theoretical and Applied Mechanics 2023;61(3):441–452
KEYWORDS
TOPICS
ABSTRACT
In order to effectively calculate dynamic characteristics of a sealed ends squeeze film damper
(SFD) under the influence of the inertial force, a computational fluid dynamics model of the
sealed ends SFD is established. The fluid inertia coefficient of SFD is investigated by using
an energy approximation method. Both the theoretical calculation and numerical simulation
are conducted to analyze the effects of eccentricity ratio and whirling frequency on stiffness
and damping. In this research, the oil film inertia force of the sealed ends SFD is solved by
using long bearing approximation (LBA) theory, which provides guidance for the design and
application of the sealed ends SFD.
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