TY - GEN
T1 - DYNAMIC RESPONSE OF A PIVOT-MOUNTED SQUEEZE FILM DAMPER
T2 - 69th ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, GT 2024
AU - Kasprzyk, Marie
AU - Delgado, Adolfo
N1 - Publisher Copyright:
Copyright © 2024 by The United States Government.
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
KW - Squeeze film damper
KW - dynamic coefficients
KW - pivot-mounted
UR - http://www.scopus.com/inward/record.url?scp=85204363041&partnerID=8YFLogxK
U2 - 10.1115/GT2024-123379
DO - 10.1115/GT2024-123379
M3 - Conference contribution
AN - SCOPUS:85204363041
T3 - Proceedings of the ASME Turbo Expo
BT - Structures and Dynamics - Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing
PB - American Society of Mechanical Engineers (ASME)
Y2 - 24 June 2024 through 28 June 2024
ER -