TRC-SFD-1-07 - Tribology Group - Texas A&M University

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Absolute Pressure [bar]24001.75Pressure @ discharge groove 60 Hz, 62 μm1.53001.2512000.750.51000.25Pressure @ SFD landFilm thickness000 5 10 15 20time*w [rad]Film thickness [um]Figure 22 Dynamic pressure measurements at SFD land and discharge groove (includingfilm thickness at sensor location). (60 Hz, 62 μm orbit amplitude, supply pressure= 31 kPa,no thru-flow)Absolute Pressure [bar]21.751.51.2510.750.50.250Air ingestiontime*w [rad]Pressure @ discharge groove 400Film thicknessPressure @ SFD land50 Hz, 74 μm00 5 10 15 20300200100Film thickness [um]Figure 23 Dynamic pressure measurements at SFD land and discharge groove (includingfilm thickness at sensor location). (50 Hz, 74 μm orbit amplitude, supply pressure= 31 kPa,no thru-flow)34
ThermocoupleconnectionStatic pressureconnectionPipe fittingsFigure 24 Cut view of SFD showing likely paths for air ingestion.35
Page 1 and 2: Texas A&M UniversityMechanical Engi
Page 3 and 4: Table of ContentsExecutive Summary.
Page 5 and 6: Figure 22 Dynamic pressure measurem
Page 7 and 8: I IntroductionSqueeze film dampers
Page 9 and 10: A review of publications related to
Page 11 and 12: III Test Rig DescriptionFigure 1 de
Page 13 and 14: Oil inletEddy current sensorHousing
Page 15 and 16: 300Y Load [N](90 N,82 N)(98 N,88 N)
Page 17 and 18: M sM fK sxC SFDxxC SFDyyF djournalF
Page 19 and 20: 2( ω−ω− )F = L x + F u ; L =
Page 21: configurations including open outle
Page 24 and 25: capacity of 4.1 kJ. In actual appli
Page 26 and 27: V Onset amplitude and frequency lea
Page 28 and 29: Figure 14 Excitation load and respo
Page 30 and 31: V.2 Experimental ResultsFigure 17 s
Page 32 and 33: 1.5Pk-Pk Pressure (bar)10.532 μm50
Page 36 and 37: VI Conclusions and RecommendationsT
Page 38 and 39: VII References[1] Delgado, A., and
Page 40 and 41: Appendix A Identification of dry fr

TRC-SFD-1-07 - Tribology Group - Texas A&M University

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