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Keywords: squeeze film damper
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Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A011, June 13–17, 2022
Paper No: GT2022-82536
... different response characteristics. Therefore, the influence of base harmonic motions should be considered during the structural design and damping optimization of SFDs. base excitation MHB-AFT squeeze film damper steady-state response Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A004, June 7–11, 2021
Paper No: GT2021-58627
...Abstract Abstract In rotor-bearing systems, squeeze film dampers (SFDs) assist to reduce vibration amplitudes while traversing a critical speed and also offer a means to suppress rotor instabilities. Along with an elastic support element, SFDs are effective means to isolate a rotor from its...
Proceedings Papers

Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT28A002, June 7–11, 2021
Paper No: GT2021-58824
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-58824 DYNAMIC ANALYSIS OF A COUPLED DUAL-ROTOR WITH SQUEEZE FILM DAMPER CONSIDERING SUDDEN UNBALANCE Ying Cui1, Yuxi Huang2, Guogang Yang2, Yongliang Wang1, Han...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A026, September 21–25, 2020
Paper No: GT2020-15491
...Abstract Abstract To validate a new squeeze film damper (SFD) bearing design introduced in [1], a pair of 3.5 inch SFD bearings were manufactured and tested. Static spring compression test was conducted to prove the spring design stiffness calculated through the geometry parametric spring model...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A038, September 21–25, 2020
Paper No: GT2020-16329
...SQUEEZE FILM DAMPER BEARING WITH DOUBLE-ENDED BEAM CENTERING SPRINGS: PART I DESIGN AND ANALYSIS Wei Li, Christopher Braman, Brian Hantz, Manish Thorat, Brian Pettinato Elliott Group, Jeannette, PA, USA ABSTRACT Squeeze film damper (SFD) bearings are widely used in industry to enhance rotor...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A008, September 21–25, 2020
Paper No: GT2020-14825
... for the mitigation of ME-induced vibration. Installing a properly designed squeeze film damper (SFD) may change the rotor’s critical speed location, damping and deflection shape, and thereby suppress the vibration caused by the ME. The effectiveness of the SFD on suppressing the ME is tested via linear and nonlinear...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A001, September 21–25, 2020
Paper No: GT2020-14136
...Abstract Abstract Squeeze film dampers (SFDs) are used in highspeed rotordynamics systems to mitigate vibrations while traversing critical speeds. SFDs are critical in dissipating large amplitude motions and dynamic loading transferred from the rotor to the bearing supports during highspeed...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A016, September 21–25, 2020
Paper No: GT2020-15212
... bearing is supported by an oil-fed squeeze film damper. After some period of operation, the compressor began to exhibit a unique nonlinear increase in the rotordynamic response followed by an unexpected subsynchronous whirl instability as the speed continued to increase. Finally, as the rotor speed...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A004, September 21–25, 2020
Paper No: GT2020-14251
... and efficient approach is proposed to predict transient responses of engine rotor systems during aircraft maneuvering flights. Keywords: aircraft maneuvering flight; aero-engine rotor system; dynamic characteristics; instantaneous static eccentricity; squeeze film damper. NOMENCLATURE A cross-sectional area, m2...
Proceedings Papers

Proc. ASME. GT2013, Volume 7B: Structures and Dynamics, V07BT30A006, June 3–7, 2013
Paper No: GT2013-94296
... Squeeze film dampers (SFDs) are widely used in aero-engines and other high speed rotating machines as damping elements, owing to their remarkable damping effect. The oil-film force model of SFDs is the key to investigate the dynamic characteristics of the rotor-bearing systems involving SFDs...
Proceedings Papers

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 157-166, June 14–18, 2010
Paper No: GT2010-22561
...Proceedings of GT2010 ASME Turbo Expo 2010: Gas Turbine Technical Congress & Exposition Jun 14-18, 2010. Glasgow, UK GT2010-22561 FINITE LENGTH SQUEEZE FILM DAMPERS WITH AIR ENTRAINMENT, NON-DIMENSIONAL MAPS AND THEIR APPLICABILITY Jorge E. Torres jtorres@unet.edu.ve Laboratorio Mecánica de...
Proceedings Papers

Proc. ASME. GT2009, Volume 3: Heat Transfer, Parts A and B, 1325-1334, June 8–12, 2009
Paper No: GT2009-60204
... 23 02 2010 Seals used in the squeeze film damper restrict the side leakage of the lubricant, thus providing a measure of additional damping. In this paper, the serrated piston ring and end-plate seals are studied numerically using CFD-ACE+, a commercially available finite volume based...
Proceedings Papers

Proc. ASME. GT2002, Volume 4: Turbo Expo 2002, Parts A and B, 819-826, June 3–6, 2002
Paper No: GT2002-30317
... 05 02 2009 Squeeze film dampers (SFDs) aid to attenuate vibrations in compressors and turbines while traversing critical speeds. In actual applications, gas ingestion from the environment may lead to the formation of a foamy lubricant that degrades the rotor/bearing system dynamic...
Proceedings Papers

Proc. ASME. GT2002, Volume 4: Turbo Expo 2002, Parts A and B, 563-572, June 3–6, 2002
Paper No: GT2002-30288
... is to investigate the influence of damper static eccentricity and unbalance level on cavitation and its resulting effect on the vibration level. By comparing predictions for the rotor vibration levels obtained respectively with, and without, lower pressure limits for the eccentric squeeze film damper model...