Notes regarding the supply and drain pressure effects on a squeeze film damper

Journal Title: INCAS BULLETIN - Year 2018, Vol 10, Issue 4

Abstract

Squeeze film dampers (SFD) are perhaps the most efficient devices that, can be used nowadays to control the shafts in airworthy turbo-compressors. Various other devices can be successfully used in land-based rotating machinery; however, due to space and weight constraints they can not be used for the lateral vibrations control in on-board ball bearings supported turbines. SFDs are basically thin oil films (surrounding the ball bearing housings), that provide the stiffness and damping required for adequate shaft behavior in conjunctions with various elastic elements and anti-rotational devices Fluid films in SFDs are strongly influenced by the oil supply and drain pressures. Some aspects regarding the effects of the supply and drain pressures on a SFD are discussed below.

Authors and Affiliations

Laurentiu MORARU

Keywords

Related Articles

The procedure for determining the local and global flow characteristics of spool valve SMHR 22.59.010 in order to be fitted to the assembly SMHR S.22.59.000

This procedure was designed within the Hydraulic Laboratory of INCREST-INCAS, in the '80s, to provide a unique way of checking and qualification of local and global flow characteristics of the spool valve SMHR S.22.59.01...

Reconstruction of High-Frequency Lunar Digital Elevation Model using Shape from Shading

This paper deals with a procedure to reconstruct a lunar surface based on fusion of Shape from Shading with absolute depth information exploited from Lunar Orbiter Laser Altimeter data. The generation of accurate lunar d...

Airpower in contemporary interventions: stabilization, coercion, peace enforcement and peacemaking. Case: Operation Unified Protector, Libya 2011

This paper intends to analyze whether airpower is decisive and irreplaceable in putting an end to violent conflict nowadays, evaluating airpower as an instrument in contemporary warfare and its role in peace operations....

[b]An analysis of the efficiency of the functional matching between a flying wing MAV airframe and different types of micro propellers[/b]

This paper aims to present specific methods for optimizing the design of micro propellers for small Reynolds numbers. In order to better understand the aim of this contribution, the effects of a micro propeller on the ae...

Correlations between the theoretical Fluons model and the physical experimental results

This paper continues the recent research of the authors concerning the Fluons mathematical model, as a theoretical basis for the interaction between the micro and macro flow structure domains (further on called IPmMD). C...

Download PDF file
  • EP ID EP419662
  • DOI 10.13111/2066-8201.2018.10.4.9
  • Views 82
  • Downloads 0

How To Cite

Laurentiu MORARU (2018). Notes regarding the supply and drain pressure effects on a squeeze film damper. INCAS BULLETIN, 10(4), 97-102. https://www.europub.co.uk/articles/-A-419662