Publications on Gas
Bearings July 18, 2024
MAJOR
APPLICATION: Oil-Free Turbomachinery,
Micro-Turbines, Turbo expanders & blowers, etc.
Gas Bearings porous
surface, metal mesh, bump
foil , rigid surface, (flexure)
tilting pad
Magazine Article
& other
San
Andrés, L., and Rohmer. M., 2019, “Failure
of a Test Rig Operating with Pressurized Gas Bearings: a Lesson on Humility,”
Case Study, Asia Turbomachinery & Pump Industry Summit, Kuala Lumpur,
Malaysia, July 9-11
NASA report San Andrés, L., Kim, T.H., and Ryu, 2009, “Thermohydrodynamic
Analysis of Bump Type gas Foil Bearings: A Model Anchored to Test Data,”
Final project Report to NASA Research NNH06ZEA001N-SSRW2
San Andrés, L., 2004, “Gas bearings will soon be widely used,” Research makes a difference, Turbomachinery
International, Vol. 45, 3, pp. 35.
San Andrés, L., Bolen, R., Yang, J., and McGowan, R., 2021,”Measurements of Static and Dynamic Load Performance of a 102 mm Carbon-Graphite Porous Surface Tilting-Pad Gas Journal Bearing,” ASME J. Eng. Gas Turbines Power, Vol. 143(11): 111017, https://doi.org/10.1115/1.4051965 (ASME GT2021-59131)
San Andrés, L, Devitt, D., and Yang, J., 2021, “On Tilting Pad Carbon-Graphite Porous Journal Bearings: Measurements of Imbalance Response and Comparison to Predictions of Bearing Performance and System Dynamic Response,” Tribology Transactions https://doi.org/10.1080/10402004.2021.1875091
San Andrés, L., Yang,
J., and Devitt, D., 2021, “Porous
Gas Journal Bearings: An Exact Solution Revisited and Force Coefficients for
Stable Rotordynamic Performance,” Appl. Sci., 11, 7949, https://doi.org/10.3390/app11177949
San Andrés, L.,
Cable, T., Zheng, Y., De Santiago, O., and Devitt, D., 2016, “Assessment of Porous Type Gas
Bearings: Measurements of Bearing Performance and Rotor Vibrations,” https://doi.org/10.1115/GT2016-57876 ASME GT2016-57876
Jeung, S.-H, M.
Rohmer, L. San Andrés, and A. Devitt, 2015, “Experimental Assessment of Drag and Rotordynamic Response
for a Porous Type Gas Bearing,” STLE Annual Meeting & Exhibition, May 17-21,
Dallas, TX
Cable,
T., and San Andrés, L., 2018, “On the Design, Manufacture
and Premature Failure of a Metal Mesh Foil Thrust Bearing – how Concepts that
Work on Paper, Actually Do Not,” ASME J. Eng. Gas Turbines Power, Vol. 140(12), 121007, DOI:
10.1115/1.4041137 (ASME GT20018-75340)
San Andrés, L., and
Chirathadam, T., 2013, “Measurements of Rotordynamic Response in a High Temperature Rotor
Supported on Two Metal Mesh Foil Bearings,” ASME J. Eng. Gas Turbines Power, vol. 135, 122507 [ASME GT2013-94321]
San Andrés, L., and
Chirathadam, T., 2013, “Performance Characteristics of Metal Mesh Foil Bearings:
Predictions vs. Measurements,” ASME J. Eng. Gas Turbines Power, vol. 135 (December), 122503 (1-8)
[ASME GT2013-95975]
San Andrés, L., and
Chirathadam, T., 2012, “A Metal Mesh Foil Bearing and a
Bump-Type Foil Bearing: Comparison of Performance for Two Similar Size Gas
Bearings,” ASME J. Eng. Gas Turbines Power, vol. 134 (October),
102501 [ASME paper GT2012-68437.
San Andrés, L., and
Chirathadam, T., 2011, “Metal Mesh Foil Bearings: Effect
of Excitation Frequency on Rotordynamic Force Coefficients,” ASME J. Eng. Gas Turbines Power, vol. 133 (12), 122503 [ASME Paper GT2011-45257]
San Andrés, L., and Chirathadam T.A., 2011, “Identification of Rotordynamic Force Coefficients of
a Metal Mesh Foil Bearing Using Impact Load Excitations,” ASME J. Eng. Gas Turbines Power, vol. 133 (11), 112501 [ASME paper GT2010-22440]
San
Andrés, L., Chirathadam, T., Ryu, K., and Kim, T.H., 2010,
“Measurements of Drag Torque, Lift-Off Journal Speed and Temperature in a Metal
Mesh Foil Bearing,” ASME J. Eng. Gas Turbines Power, Vol. 132(Nov), p. 112503.
San Andrés, L.,
Chirathadam, T. A., and Kim, T.H., 2010, “Measurements of Structural Stiffness and Damping
Coefficients in a Metal Mesh Foil Bearing,” ASME J. Eng. Gas Turbines
Power, Vol. 132(March), p. 032503
(ASME Paper GT2009-59315)
San
Andrés, L., Duran, A., de Santiago, O., Jauregui, J.C., and Lubell, D., 2024,
“Measurement of Temperature and Load vs. Bearing Displacement in a Thrust Foil
Bearing: Differences Between Light Load and High Load Operation,”
ASME J. Eng. Gas Turbines Power, Vol. 146(3):
031004, https://doi.org/10.1115/1.4063545
(ASME Paper GT2023-103154)
San
Andrés, L., and Jung, W., 2018, “Evaluation of Coated Top
Foil Bearings: Dry Friction, Drag Torque, and Dynamic Force Coefficients,” ASME GT20018-75595. https://doi.org/10.1115/GT2018-75595
San
Andrés, L., Norsworthy, J., 2016, “Structural and Rotordynamic Force Coefficients of a Shimmed Bump
Foil Bearing: An Assessment of a Simple Engineering Practice,” ASME J. Eng. Gas
Turbines Power. Vol. 138 (Jan),
012502 (8). DOI: 10.1115/1.4031238 (ASME
GT2015-43734).
San
Andrés, L., Ryu, K., and Diemer, P., 2015, “Predictions of Gas Thrust Foil
Performance for Oil-Free Automotive Turbochargers,” ASME J. Eng. Gas Turbines
Power. Vol. 137 (March), pp. 032502 (10 pag).
DOI: 10.1115/1.4028389
San
Andrés, L., Norsworthy, J., 2014, “Measurement of
Drag Torque, Lift Off Speed and Rotordynamic Force Coefficients in a Shimmed
BFB,” 9TH
IFToMM INTERNATIONAL CONFERENCE ON ROTOR DYNAMICS, Sept 22-25, 2014,
Milano, Italy
San
Andrés, L., and Ryu, K., 2013, “On the Failure of a Gas Foil Bearing: High Temperature Operation
without Axial Cooling Flow,” ASME J. Eng. Gas Turbines Power, vol. 135 (November),
112506 (1-10) [ASME GT2013-94244].
Ryu, K., and San
Andrés, L., 2012, ”Effect of Cooling Flow on The Operation of a Hot Rotor-Gas Foil
Bearing System,” ASME J. Eng. Gas Turbines
Power, vol. 134 (October), 102511 [ASME paper GT2012-68074].
De Santiago, O., and
San Andrés, L., “Parametric Study of
Bump Foil Gas Bearings for Industrial Applications,” ASME GT2011-46767
San
Andrés, L.., and Ryu, K., 2011, “On the Nonlinear Dynamics of Rotor-Foil Bearing Systems: Effects
of Shaft Acceleration, Mass Imbalance and Bearing Mechanical Energy
Dissipation,” ASME paper
GT2011-45763
San
Andrés, L., Ryu, K., and Kim, T.H., 2011, “Identification of Structural
Stiffness and Energy Dissipation parameters in a 2nd Generation Foil Bearing;
Effect of Shaft Temperature”, ASME J. Eng. Gas Turbines Power, vol. 133 (March)
, pp. 032501
San Andrés, L., Ryu,
K., and Kim, T-H, 2011, “Thermal
Management and Rotordynamic Performance of a Hot Rotor-Gas Foil Bearings
System. Part 1: Measurements”, ASME J. Eng.
Gas Turbines Power, vol. 133 (June), 062501 [ASME paper GT2010-22981]
San Andrés, Kim, T-H, and Ryu, K., 2011, “Thermal
Management and Rotordynamic Performance of a Hot Rotor-Gas Foil Bearings
System. Part 2: Predictions Versus Test Data,” ASME J. Eng.
Gas Turbines Power, vol. 133 (June), 062502 [ASME paper GT2010-22983]
Howard, S., and San Andrés, L., 2011, “A New Analysis Tool Assessment for Rotordynamic Modeling of Gas Foil Bearings,” ASME J. Eng. Gas Turbines Power, vol. 133 (Feb.), 022505 [ASME paper GT2010-22508 (NASA/TM-2010-216354)]
San
Andrés, L., and Kim, T.H., 2010, “Thermohydrodynamic Analysis
of Bump Type Gas Foil Bearings: A Model Anchored to Test Data,” ASME J. Eng. Gas Turbines Power, Vol. 132 (April), p. 042504 (ASME Paper No. GT2009-59919)
Kim,
T. H., and San Andrés, L., 2010,
“Thermohydrodynamic
Model Predictions and Performance Measurements of Bump-Type Foil Bearing for
Oil-Free Turboshaft Engines in Rotorcraft Propulsion Systems,” ASME Journal of Tribology, Vol. 132(January), p. 011701
EDUCATION San Andrés, L., Camero,
J., Muller, S., Chirathadam, T., and
Ryu, K., 2010, “Measurements of Drag Torque, Lift Off Speed, and Structural
Parameters in a 1st Generation Floating Gas Foil Bearing”, Proc. of the 8th
IFToMM International Conference on Rotordynamics, September 2010, Seoul, Korea,
Paper P-1113
Kim, T.H., L. San Andrés, J. Nourse, J.L. Wade,
and D. Lubell, 2009, “Modeling
of a Gas Foil Bearing for Microturbine Applications: Predictions versus
Experimental Stiffness and Damping Force Coefficients,” World Tribology Congress 20009,
Kim, T.H., Breedlove,
A., and San Andrés, L., 2009,
“Characterization of Foil Bearing Structure at Increasing Temperatures: Static
Load and Dynamic Force Performance,” ASME
Journal of Tribology, Vol. 131(3), pp. 041703-(1-9)
San Andrés, L., and
Kim, T.H., 2009, “Thermohydrodynamic Model
Predictions and Performance Measurements of Bump-type Foil Bearing for Oil-Free
Turboshaft Engines in Rotorcraft Propulsion Systems,” American Helicopter
Society 65th Annual Forum, Grapevine, Texas, May 27-29, 2009
Kim, T.H., and San
Andrés, L., 2009, "Effects of a Mechanical Preload on the Dynamic Force Response
of Gas Foil Bearings - Measurements and Model Predictions," Tribology Transactions, Vol. 52, pp. 569-580
Kim,
T.
H., and San Andrés, L., 2009, “Effect
of Side End Pressurization on the Dynamic Performance of Gas Foil Bearings – A
Model Anchored to Test Data,” ASME Journal of Engineering
for Gas
Turbines and Power, 131(1), pp. 012501. [ASME
Paper GT2008-50571]
EDUCATION San Andrés, L., Kim, T.H., Ryu, K., Chirathadam, T.
A., Hagen, K., Martinez, A., Rice, B., Niedbalski, N., Hung, W., and Johnson,
M., 2009,
“Gas Bearing Technology for Oil-Free Microturbomachinery – Research Experience
for Undergraduate (REU) Program at Texas A&M University,” ASME Paper No. GT2009-59920.
Kim, T.H., and L. San
Andrés, 2008, “Effect of Mechanical
Preloads on the Dynamic Performance of Gas Foil Bearings”, Paper IJTC2008-71195, STLE/ASME International Joint Tribology Conference, Miami, Fla,
October 2008.
San Andrés, L., and
Kim, T.H., 2009, “Analysis of Gas Foil
Bearings Integrating FE Top Foil Models,” Tribology International, 42(2009),
pp. 111-120.
Kim, T.H., San Andrés,
L., and Breedlove, A., 2008, “Characterization of Foil Bearing Structure for
Increasing Shaft Temperatures: Part II – Dynamic Force Performance,” ASME Paper GT2008-50570.
Kim, T.H., Breedlove,
A., and San Andrés, L., 2008,
“Characterization of Foil Bearing Structure for Increasing Shaft Temperatures:
Part I – Static Load Performance,” ASME Paper
GT2008-50567.
Kim, T.H., and L. San
Andrés, 2008, “Heavily Loaded Gas Foil
Bearings: a Model Anchored to Test Data,” ASME
Journal of Engineering for Gas Turbines and Power, Vol. 130(1), pp. 012504-1-8.
(ASME Paper GT 2005-68486).
San Andrés, L., and
Kim, T.H., 2008, “Forced Nonlinear Response of
Gas Foil Bearing Supported Rotors,” Tribology International, 41(8), pp. 704-715.
San Andrés, L., and
T.H. Kim, 2007, “Issues on Instability
and Force Nonlinearity in Gas Foil Bearing Supported Rotors,” 43rd AIAA/ASME/SAE/ASEE
Joint Propulsion Conference & Exhibit, Cincinnati, OH, July 9-11, Paper
AIAA-2007-5094.
San Andrés, L., and T-H
Kim, 2007, “Improvements
to the Analysis of Gas Foil Bearings: Integration of Top Foil 1D and 2D
Structural Models,” ASME Paper No
GT2007-27249.
San Andrés, L., D.
Rubio, and T.H. Kim, 2007, “Rotordynamic
Performance of a Rotor Supported on Bump Type Foil Gas Bearings: Experiments
and Predictions,” ASME Journal of
Engineering for Gas Turbines and Power, 129(3), pp. 850-857 (ASME Paper GT
2006-91238).
Kim, T-H, and L., San
Andrés, 2007, “Analysis of Gas Foil
Bearings with Piecewise Linear Elastic Supports.” Tribology International, 40, pp. 1239-1245.
Kim, T.H., and L. San
Andrés, 2006, “Limits for High Speed
Operation of Gas Foil Bearings,” ASME
Journal of Tribology, 128, pp.
670-673.
Rubio, D., and L. San Andrés, 2007, “Structural Stiffness, Dry-Friction Coefficient and
Equivalent Viscous Damping in a Bump-Type Foil Gas Bearing,” ASME Journal of Engineering for Gas Turbines and
Power, 129, pp. 494-502. (ASME Paper GT 2005-68384).
Rubio, D., and L., San Andrés, 2006, “Bump-Type Foil Bearing Structural Stiffness:
Experiments and Predictions”, ASME
Journal of Engineering for Gas Turbines and Power, 128, pp. 653-660. (ASME
Paper GT 2004-53611).
Kim, Tae-Ho., and L. San Andrés, 2005, “Heavily Loaded Gas Foil Bearings: a Model Anchored to
Test Data,” ASME Paper GT 2005-68486.
Kim, T.H., and L. San Andrés, 2005, “Analysis of
Gas Foil Bearings with Piecewise Linear Elastic Supports,” Paper WTC 2005-63397, III World Tribology Conference,
San Andrés, L., and T.H. Kim, 2005 “Gas Foil Bearings:
Limits for High Speed Operation,” Paper
WTC 2005-63398. III World Tribology Conference, Washington D.C., September.
Rubio, D., and L., San Andrés, 2003, “Identification
of Structural Stiffness in Bump-Type Foil Bearings”, Proc. VIII Congreso y Exposición Latinoamericana de Turbomaquinaria, Veracruz, Mexico,
October.
Petter, C., 2006, “Analysis of Gas Foil Bearings and Test Data Predictions,” ASME Regional Student
Conference, District E – Eastern Area (2006 Spring Student Conference, April
6-8,
San Andrés, L., 1995,
"Turbulent Flow Foil Bearings for Cryogenic Applications," ASME Journal of Tribology, Vol. 117, 1, pp. 185-195
(ASME Paper 94-TRIB-33).
GAS BEARINGS – Flexure
Pivot Tilting Pad
San Andrés, L., Niu, Y., and Ryu, K, 2010, “Dynamic Response of a Rotor-Hybrid
Gas Bearing System Due To Base Induced Periodic
Motions,” ASME
paper GT2010-22277.
San Andrés, L., and Ryu, K., 2008, “Hybrid Gas Bearings with Controlled Supply Pressure
to Eliminate Rotor Vibrations while Crossing System Critical Speeds,” ASME Journal of Engineering for Gas Turbines and
Power, Vol. 130(6), pp. 062505-1-10 (ASME Paper GT2008-50393).
San Andrés, L., and K. Ryu, 2008, “Flexure
Pivot Tilting Pad Gas Bearings: Operation with Worn Clearances and Two Load-Pad
Configurations,” ASME Journal of Engineering for Gas Turbines and
Power, Vol. 130, pp. 042506-1-10 (ASME Paper No GT2007-27127).
Ryu, K., and L. San Andrés, 2006, “Measurements of Rotordynamic Response of a Rotor
Supported on Hybrid Flexure Pivot Tilting Pad Gas Bearings” Paper IJTC
2006-12371, ASME/STLE International Joint
Tribology Conference, San Antonio, TX, October 2006.
Zhu, S. and L., San Andrés, 2007, “Rotordynamic Performance of Flexure Pivot Hydrostatic
Gas Bearings for Oil-Free Turbomachinery,” Journal
of Engineering for Gas Turbines and Power, 129(4), pp. 1020-1027. (ASME Paper
GT 2004-53621).
Wilde, D., and L., San Andrés, 2004, “Experimental Lift Off Characteristics and the
Effect of a Low Friction Coating on the Startup Response of Simple Gas Hybrid
Bearings for Oil-Free Turbomachinery,” ASME Paper GT 2004-54183.
GAS BEARINGS – Rigid Surface
Zhu, X., and L. San Andrés, 2005, “Experimental Response of a Rotor Supported on
Rayleigh Step Gas Bearings,” ASME Paper
GT 2005-68296.
Wilde, D.A., and San Andrés, L., 2006, “Experimental Response of Simple Gas Hybrid Bearings
for Oil-Free Turbomachinery,” ASME
Journal of Engineering for Gas Turbines and Power, 128, pp. 626-633. (ASME
Paper No. GT 2003-38833.
Wilde, D.A., and San Andrés, L., 2006, “Comparison of Rotordynamic Analysis Predictions with
the Test Response of Simple Gas Hybrid Bearings for Oil Free Turbomachinery,” ASME Journal of Engineering for Gas Turbines and
Power, 128, pp. 634-643 (ASME Paper No. GT2003-38859).
Wilde, D.A., and San Andrés, L., 2006, “Experimental Response of Simple Gas Hybrid Bearings
for Oil-Free Turbomachinery,” ASME
Journal of Engineering for Gas Turbines and Power, 128, pp. 626-633. (ASME Paper No. GT 2003-38833)
ANALYSIS OF GAS BEARINGS (finite differences and finite element based)
San Andrés, L., Yang,
J., and Devitt, D., 2021,
“Porous Gas Journal Bearings: An Exact Solution Revisited and Force
Coefficients for Stable Rotordynamic Performance,” Appl. Sci., 11, 7949,
https://doi.org/10.3390/app11177949
San Andrés, L., 2006, “Hybrid
Flexure Pivot-Tilting Pad Gas Bearings: Analysis and Experimental Validation,” ASME Journal of Tribology, 128, pp. 551-558. (Paper
IJTC 2006-12026)
San Andrés, L., 2005,
HYBRID GAS BEARINGS FOR OIL-FREE TURBOMACHINERY: Experiments
and model validation, 1st
International Conference on Experiments/Process/System
Modeling/Simulation/Optimization, Athens, Greece, Paper 189, July 6-9
Pan, C., and L. San Andrés, 2005, “The Narrow
Groove Bearing Analysis Revisited,” III
World Tribology Conference, Washington D.C.,
September, Paper WTC 2005-63803.
Delgado, A., L., San Andrés, and J. Justak, 2004, “Analysis of Performance and Rotordynamic Force
Coefficients of Brush Seals with Reverse Rotation Ability”, ASME Paper GT 2004-53614.
San Andrés, L., and D. Wilde, 2001, “Finite Element Analysis
of Gas Bearings for Oil-Free Turbomachinery,” Revue Européenne des Eléments Finis, Vol. 10 (6/7), pp. 769-790
Faria, M., and L. San Andrés, 2000, “On the Numerical Modeling of High Speed Hydrodynamic
Gas Bearings,” ASME Journal of Tribology,
Vol. 122, 1, pp. 124-130 (ASME Paper 99-TRIB-2).
Zirkelback, N., and L. San Andrés, 1999, "Effect of Frequency Excitation on the Force
Coefficients of Spiral Groove Thrust Bearings and Face Gas Seals,” ASME Journal of Tribology, Vol. 121, 4, pp. 853-863
(ASME Paper 98-TRIB-12).
Research Progress Reports to the Turbomachinery
Research Consortium (TRC):
TRC-B&C-03-20 Bolen, R., and San
Andrés, L., “Experiments on a
Tilting Pads, Porous Carbon-Graphite, Gas Bearing: Static load and Force
Coefficients”
TRC-B&C-01-20 Cable, T., and San
Andrés, L., “EXPERIMENTS AND PREDICTIONS WITH A FOIL THRUST BEARING
SUPPORTED BY METAL MESH SCREEN”
TRC-B&C-02-17 Cable,
T., and San Andrés, L., “A Test
Rig for Evaluation of Foil Thrust Bearings: Dynamic Stiffness of a Metal Mesh
Thrust Foil Bearing”
TRC-B&C-01-16 San Andrés L., and Zheng,
Y., “Rotordynamic Performance of a Rotor Supported on Carbon-Graphite
Tilting-Pad Air Bearings”
TRC-B&C-02-16 San Andrés L., and Cable,
T., “Structural Force Coefficients from Metal Mesh Pads for a Foil
Bearing”
TRC-B&C-01-14 Norsworthy, J., and San Andrés, L. “A Shimmed Bump
Foil Bearing: Measurements of Drag Torque, Lift-Off Speed, and Stiffness and
Damping Coefficients.”
TRC-B&C-04-13, San Andrés. L., and Norsworthy, J., “Identification of Structural Stiffness and Material Loss Factor in
a Shimmed (Generation One) Bump-Type Foil Bearing.”
TRC-B&C-02-13, San Andrés, L., and Chirathadam, T., “Metal Mesh Foil Bearings: Prediction and Measurement of Static and
Dynamic Performance Characteristics.”
TRC-BC001-12, San Andrés, L., and Chirathadam, T., “Measurements of Rotordynamic Response in a High temperature Rotor
Supported on 
Two Metal Mesh Foil Bearings,”
TRC-B&C-01-10, San Andrés, L., and T. Chirathadam, “More on Metal
Mesh Foil Bearings: Effect of Excitation Frequency on Dynamic
Force Coefficients”.
TRC-B&C-1-09, San Andrés, L., and Y. Niu, “Dynamic Response
of a Rotor-Air Bearing System due to Base Induced Periodic Motions”.
TRC-B&C-2-09, San Andrés, L., K. Ryu, and T-H Kim, “Measurements of
Rotordynamic Response in a Hot Rotor Gas Foil Bearing System”.
TRC-B&C-3-09, San Andrés, L., and T. Chirathadam, “Measurement of
Bearing Drag Torque, Lift Off Speed and Identification of structural Stiffness
and Damping in a Metal Mesh Foil Bearing,”.
TRC-B&C-5-08, San Andrés, L., and Kim, T.H., “Measurements of
Structural Stiffness and Damping in a Metal Mesh Bearing and Development of a
Test Rig for Foil Gas Bearings”.
TRC-B&C-1-08, San Andrés, L., and K. Ryu, “Dynamic Forced
Response of a Rotor-Hybrid Gas Bearing System due to Intermittent Shocks”.
TRC-B&C-2-08, San Andrés, L., and. T.H. Kim, “Thermohydrodynamic
Analysis of Bump Type Gas Foil Bearings: Model and Predictions”.
TRC-B&C-3-08, San Andrés, L., and. T.H. Kim, “Rotordynamic
Measurements on a High Temperature Rotor Supported on Gas Foil Bearings".
TRC-B&C-1-07, San Andrés, L., and K.
Ryu, 2007,“Hybrid Gas
Bearings with Controlled Supply Pressure to Eliminate Rotor Vibrations while
Crossing System Critical Speeds”.
TRC-B&C-2-07, San Andrés, L., and.
T.H. Kim, 2007, “Effect of Side Feed Pressurization on the Performance of
Shimmed Foil Gas Bearings – Part I: Experimental Verification”.
TRC-B&C-3-07, San Andrés, L., and.
T.H. Kim, 2007, “Effect of Side Feed Pressurization on the Performance of
Shimmed Foil Gas Bearings – Part II: Model, Predictions and Comparisons to
Rotordynamic Measurements".
TRC-B&C-1-06, San Andrés, L., and
Kim, T-H, 2006, “Computational
Analysis of Gas Foil Bearings Integrating 1D and 2D Finite Element Models for
Top Foil”.
TRC-B&C-2-06, San Andrés, L., and
Kim, T-H, 2006, “Further Imbalance
Response Measurements of Rotor Supported on Bump-Type Gas Foil Bearings –
Operation to 50 krpm”.
TL-B&C-1-06, San Andrés, L., and
Ryu, K., “Test Results for
Load-On-Pad and Load-Between-Pad Hybrid Flexure Pivot Tilting Pad Gas
Bearings".
TRC-B&C-1-05, San
Andrés, L., 2005, "Hybrid Tilting Pad Gas
Bearings: Analysis & Experimental Validation".
TRC-SEAL-3-05, Delgado, A., and L. San Andrés, 2005, " Hybrid Tilting Pad Gas Bearings: Analysis &
Experimental Validation".
TRC-B&C-2-05, Rubio, D., and L. San Andrés, 2005, "
Rotordynamic Performance of a Rotor Supported on Gas Foil Bearings",
TRC-B&C-2-04, Zhu, X., and L San Andrés, 2004,
“Experimental Response of a Rotor Supported on Rayleigh Step Gas Bearings”.
TRC-B&C-4-03, San Andrés, L., and X. Zhu, 2003, “Experimental
Response of a Rotor Supported on Flexure Pivot Hydrostatic Pad Gas Bearings”.
TRC-B&C-5-03, Rubio, D. and L. San Andrés, 2003, “Bump Type
Foil Bearing Structural Stiffness: Experiments and Predictions”.
TRC-B&C-2-02, Deborah Wilde, 2002, “Experimental
Response of Gas Hybrid Bearings for High Speed Oil-Free Turbomachinery”.
TRC-RD-1-99, Diaz,
S., T. Beets, G. Dunn,
and L. San Andrés, 1999, “High Speed Test
Rig for Identification of Gas Journal Bearing Performance: Design, Constraints
and Fabrication"
TRC-Seal-7-98, Zirkelback, N., and L. San
Andrés, 1998, “Computational Analysis
of Spiral Groove Thrust Bearings and Face Seals”.
TRC-SEAL-7-97, Zirkelback, N., and L. San Andrés, 1997,
“Computational Analysis of Compressible Fluid Spiral Groove Face Seals”.
Sponsors: National Science Foundation (03-06), Turbomachinery
Research Consortium (00-08, 11), USAF-Wright Patterson (04-05), State of Texas
Energy Resources Program (01-02), Capstone Turbine Corp. (2007), NASA GRC
(2007-2009), Borg-Warner (11-12)