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Ilmar Ferreira Santos
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Journal Articles

Dynamic Behavior of a Tilting-Pad Thrust Bearing Operating Under a Hybrid Lubrication Regime

Jefferson Silva Barbosa, Aldemir Ap Cavallini, Jr, Ilmar Ferreira Santos, Valder Steffen, Jr
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2023, 145(11): 114101.
Paper No: TRIB-22-1193
https://doi.org/10.1115/1.4062817
Published Online: July 12, 2023
View Article titled, Dynamic Behavior of a Tilting-Pad Thrust Bearing Operating Under a Hybrid Lubrication Regime
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Topics: Bearings, Damping, Lubrication, Pressure, Stiffness, Thrust bearings, Rotors, Stress
Journal Articles

Noninvasive Parameter Identification in Rotordynamics Via Fluid Film Bearings—Linking Active Lubrication and Operational Modal Analysis

Ilmar Ferreira Santos, Peter Kjær Svendsen
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2017, 139(6): 062507.
Paper No: GTP-16-1441
https://doi.org/10.1115/1.4035447
Published Online: February 7, 2017
View Article titled, Noninvasive Parameter Identification in Rotordynamics Via Fluid Film Bearings—Linking Active Lubrication and Operational Modal Analysis
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Topics: Bearings, Damping, Fluid films, Lubrication, Pressure, Rotors, Signals, Stress, Modal analysis, Rotordynamics
Proceedings Papers

Non-Invasive Parameter Identification in Rotordynamics via Fluid Film Bearings: Linking Active Lubrication and Operational Modal Analysis

Ilmar Ferreira Santos, Peter Kjær Svendsen
Proc. ASME. GT2016, Volume 7B: Structures and Dynamics, V07BT31A028, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57618
https://doi.org/10.1115/GT2016-57618
View Paper titled, Non-Invasive Parameter Identification in Rotordynamics via Fluid Film Bearings: Linking Active Lubrication and Operational Modal Analysis
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Topics: Bearings, Fluid films, Lubrication, Modal analysis, Rotordynamics, Pressure, Rotors, Damping, Lubricants, Signals
Journal Articles

Dynamic Coefficients of a Tilting Pad With Active Lubrication: Comparison Between Theoretical and Experimental Results

Alejandro Cerda Varela, Ilmar Ferreira Santos
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. July 2015, 137(3): 031704.
Paper No: TRIB-14-1288
https://doi.org/10.1115/1.4029943
Published Online: July 1, 2015
View Article titled, Dynamic Coefficients of a Tilting Pad With Active Lubrication: Comparison Between Theoretical and Experimental Results
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Topics: Bearings, Hydraulic drive systems, Lubrication, Stress, Nozzles, Dynamics (Mechanics), Stiffness, Signals, Control equipment
Journal Articles

Tilting-Pad Journal Bearings With Active Lubrication Applied as Calibrated Shakers: Theory and Experiment

Alejandro Cerda Varela, Ilmar Ferreira Santos
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. December 2014, 136(6): 061010.
Paper No: VIB-13-1407
https://doi.org/10.1115/1.4028452
Published Online: September 24, 2014
View Article titled, Tilting-Pad Journal Bearings With Active Lubrication Applied as Calibrated Shakers: Theory and Experiment
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Topics: Bearings, Calibration, Dynamics (Mechanics), Flow (Dynamics), Hydraulic drive systems, Modeling, Pipelines, Pressure, Rotors, Signals
Proceedings Papers

Actively Lubricated Bearings Applied as Calibrated Shakers to Aid Parameter Identification in Rotordynamics

Ilmar Ferreira Santos, Alejandro Cerda Varela
Proc. ASME. GT2013, Volume 7B: Structures and Dynamics, V07BT30A025, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95674
https://doi.org/10.1115/GT2013-95674
View Paper titled, Actively Lubricated Bearings Applied as Calibrated Shakers to Aid Parameter Identification in Rotordynamics
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Topics: Bearings, Rotordynamics, Fluid films, Pressure, Rotors, Servomechanisms, Valves, Lubrication, Signals, Experimental characterization
Proceedings Papers

Experimental Bifurcation Analysis by Control-Based Continuation: Determining Stability

Emil Bureau, Ilmar Ferreira Santos, Jon Juel Thomsen, Frank Schilder, Jens Starke
Proc. ASME. IDETC-CIE2012, Volume 1: 24th Conference on Mechanical Vibration and Noise, Parts A and B, 999-1006, August 12–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-70616
https://doi.org/10.1115/DETC2012-70616
View Paper titled, Experimental Bifurcation Analysis by Control-Based Continuation: Determining Stability
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Topics: Bifurcation, Stability, Dynamic systems, Electromagnetic actuators, Equilibrium (Physics), Frequency response, Vibration
Proceedings Papers

Condition Monitoring With Wind Turbine SCADA Data Using Neuro-Fuzzy Normal Behavior Models

Meik Schlechtingen, Ilmar Ferreira Santos
Proc. ASME. GT2012, Volume 6: Oil and Gas Applications; Concentrating Solar Power Plants; Steam Turbines; Wind Energy, 717-726, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68011
https://doi.org/10.1115/GT2012-68011
View Paper titled, Condition Monitoring With Wind Turbine SCADA Data Using Neuro-Fuzzy Normal Behavior Models
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Topics: Condition monitoring, Wind turbines, Signals, Errors, Turbines, Currents, Data acquisition, Fluctuations (Physics), Hardware, Machine learning
Proceedings Papers

On the Simplifications for the Thermal Modeling of Tilting-Pad Journal Bearings Under Thermoelastohydrodynamic Regime

Alejandro Cerda Varela, Michel Fillon, Ilmar Ferreira Santos
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 823-835, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68329
https://doi.org/10.1115/GT2012-68329
View Paper titled, On the Simplifications for the Thermal Modeling of Tilting-Pad Journal Bearings Under Thermoelastohydrodynamic Regime
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Topics: Journal bearings, Modeling, Heat transfer, Bearings, Temperature, Flow (Dynamics), Heat conduction, Lubrication, Reynolds number, Temperature gradient
Proceedings Papers

Stability Analysis of an Industrial Gas Compressor Supported by Tilting-Pad Bearings Under Different Lubrication Regimes

Alejandro Cerda Varela, Ilmar Ferreira Santos
Proc. ASME. GT2011, Volume 6: Structures and Dynamics, Parts A and B, 615-629, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46450
https://doi.org/10.1115/GT2011-46450
View Paper titled, Stability Analysis of an Industrial Gas Compressor Supported by Tilting-Pad Bearings Under Different Lubrication Regimes
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Topics: Bearings, Compressors, Industrial gases, Lubrication, Stability, Rotors, Journal bearings, Modeling, Thermohydrodynamics
Journal Articles

Stability Analysis of an Industrial Gas Compressor Supported by Tilting-Pad Bearings Under Different Lubrication Regimes

Alejandro Cerda Varela, Ilmar Ferreira Santos
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. February 2012, 134(2): 022504.
https://doi.org/10.1115/1.4004214
Published Online: December 20, 2011
View Article titled, Stability Analysis of an Industrial Gas Compressor Supported by Tilting-Pad Bearings Under Different Lubrication Regimes
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Topics: Bearings, Compressors, Lubrication, Modeling, Rotors, Stability, Pressure, Thermohydrodynamics
Proceedings Papers

Geometry Optimization of Hybrid Tilting-Pad Journal Bearings

Ilmar Ferreira Santos, Bo Uldall Kristiansen
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 319-321, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44321
https://doi.org/10.1115/IJTC2007-44321
View Paper titled, Geometry Optimization of Hybrid Tilting-Pad Journal Bearings
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Topics: Geometry, Journal bearings, Optimization, Bearings, Rotors, Damping, Lubrication, Hydrostatics, Lubricants, Machinery
Proceedings Papers

Frequency Response Analysis of an Actively Lubricated Rotor/Tilting-Pad Bearing System

Rodrigo Nicoletti, Ilmar Ferreira Santos
Proc. ASME. GT2004, Volume 6: Turbo Expo 2004, 735-744, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-54034
https://doi.org/10.1115/GT2004-54034
View Paper titled, Frequency Response Analysis of an Actively Lubricated Rotor/Tilting-Pad Bearing System
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Topics: Bearings, Frequency response, Rotors, Resonance, Vibration, Control equipment, Dynamic response, Dynamics (Mechanics), Fluid-dynamic forces, Lubrication
Proceedings Papers

The Influence of Injection Pockets on the Performance of Tilting-Pad Thrust Bearings: Part I — Theory

Niels Heinrichson, Ilmar Ferreira Santos, Axel Fuerst
Proc. ASME. ESDA2006, Volume 3: Dynamic Systems and Controls, Symposium on Design and Analysis of Advanced Structures, and Tribology, 883-891, July 4–7, 2006
Publisher: American Society of Mechanical Engineers
Paper No: ESDA2006-95285
https://doi.org/10.1115/ESDA2006-95285
View Paper titled, The Influence of Injection Pockets on the Performance of Tilting-Pad Thrust Bearings: Part I — Theory
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Topics: Thrust bearings, Bearings, High pressure (Physics), Computer simulation, Dimensions
Proceedings Papers

The Influence of Injection Pockets on the Performance of Tilting-Pad Thrust Bearings: Part II — Comparison Between Theory and Experiment

Niels Heinrichson, Axel Fuerst, Ilmar Ferreira Santos
Proc. ASME. ESDA2006, Volume 3: Dynamic Systems and Controls, Symposium on Design and Analysis of Advanced Structures, and Tribology, 893-901, July 4–7, 2006
Publisher: American Society of Mechanical Engineers
Paper No: ESDA2006-95287
https://doi.org/10.1115/ESDA2006-95287
View Paper titled, The Influence of Injection Pockets on the Performance of Tilting-Pad Thrust Bearings: Part II — Comparison Between Theory and Experiment
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Topics: Thrust bearings, Stress, Film thickness, Pressure, Computer simulation, High pressure (Physics)
Journal Articles

Reducing Friction in Tilting-Pad Bearings by the Use of Enclosed Recesses

Niels Heinrichson, Ilmar Ferreira Santos
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 2008, 130(1): 011009.
https://doi.org/10.1115/1.2805428
Published Online: December 26, 2007
View Article titled, Reducing Friction in Tilting-Pad Bearings by the Use of Enclosed Recesses
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Topics: Bearings, Friction, Thrust bearings
Journal Articles

The Influence of Injection Pockets on the Performance of Tilting-Pad Thrust Bearings—Part II: Comparison Between Theory and Experiment

Niels Heinrichson, Axel Fuerst, Ilmar Ferreira Santos
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. October 2007, 129(4): 904–912.
https://doi.org/10.1115/1.2768610
Published Online: June 19, 2007
View Article titled, The Influence of Injection Pockets on the Performance of Tilting-Pad Thrust Bearings—Part II: Comparison Between Theory and Experiment
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Topics: Film thickness, Flow (Dynamics), Knudsen number, Pressure, Stress, Thrust bearings, High pressure (Physics), Simulation, Bearings, Computer simulation
Journal Articles

The Influence of Injection Pockets on the Performance of Tilting-Pad Thrust Bearings—Part I: Theory

Niels Heinrichson, Ilmar Ferreira Santos, Axel Fuerst
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. October 2007, 129(4): 895–903.
https://doi.org/10.1115/1.2768609
Published Online: June 19, 2007
View Article titled, The Influence of Injection Pockets on the Performance of Tilting-Pad Thrust Bearings—Part I: Theory
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Topics: Bearings, Film thickness, Flow (Dynamics), Pressure, Temperature, Thrust bearings, High pressure (Physics)
Journal Articles

Frequency Response Analysis of an Actively Lubricated Rotor/Tilting-Pad Bearing System

Rodrigo Nicoletti, Ilmar Ferreira Santos
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2005, 127(3): 638–645.
https://doi.org/10.1115/1.1850940
Published Online: June 24, 2005
View Article titled, Frequency Response Analysis of an Actively Lubricated Rotor/Tilting-Pad Bearing System
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Topics: Bearings, Lubrication, Rotors, Frequency response, Excitation, Vibration, Machinery
Journal Articles

Compensation of Cross-Coupling Stiffness and Increase of Direct Damping in Multirecess Journal Bearings Using Active Hybrid Lubrication: Part I—Theory

Ilmar Ferreira Santos, Fla´vio Yukio Watanabe
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2004, 126(1): 146–155.
https://doi.org/10.1115/1.1631015
Published Online: January 13, 2004
View Article titled, Compensation of Cross-Coupling Stiffness and Increase of Direct Damping in Multirecess Journal Bearings Using Active Hybrid Lubrication: Part I—Theory
Open the PDF for Compensation of Cross-Coupling Stiffness and Increase of Direct Damping in Multirecess Journal Bearings Using Active Hybrid Lubrication: Part I—Theory in another window
Topics: Bearings, Damping, Journal bearings, Lubrication, Stiffness, Rotors, Pressure