DYNAMIC RESPONSE OF A PIVOT-MOUNTED SQUEEZE FILM DAMPER: MEASUREMENTS AND PREDICTIONS

Marie Kasprzyk, Adolfo Delgado

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Squeeze film dampers (SFDs) are widely used to reduce vibration levels in rotating equipment. These devices are installed in series with bearings and are subjected to precessional motions with the inner and outer damper surfaces remaining parallel. Alternatively, this paper evaluates the dynamic performance of a damper describing angular motions. This paper includes the design and development of a test rig, and the experimental dynamic response of the pivot-mounted journal benchmarked with a predictive finite element code. The experimental setup uses a housing with two different radial clearances—3 mils (76.2 μm) for the lower land and 12 mils (304.8 μm) for the upper land—which is open to atmosphere. This work also includes developing a pivot-mounted SFD computer code, capable of predicting the dynamic performance of unpressurized 2π and segmented dampers. The numerical tool can predict the dynamic performance of a damper that has multiple land diameters with different clearances. The experimental results identify stiffness, damping, and added mass for both the SFD and its structure, showing a close correlation with the numerical calculations using three different fluid viscosities.

Original languageEnglish
Title of host publicationStructures and Dynamics - Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791888025
DOIs
StatePublished - 2024
Event69th ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, GT 2024 - London, United Kingdom
Duration: Jun 24 2024Jun 28 2024

Publication series

NameProceedings of the ASME Turbo Expo
Volume10A

Conference

Conference69th ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, GT 2024
Country/TerritoryUnited Kingdom
CityLondon
Period06/24/2406/28/24

Keywords

  • Squeeze film damper
  • dynamic coefficients
  • pivot-mounted

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