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Ilmar F. Santos
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Proceedings Papers

Dynamics of Nonlinear Mechanical Systems and Virtual Reality: An Educational Tool for Engineering

Ilmar F. Santos, Alexandre P. Ferretti, Eduardo Schmidek
Proc. ASME. DETC97, Volume 1A: 16th Biennial Conference on Mechanical Vibration and Noise, V01AT06A006, September 14–17, 1997
Publisher: American Society of Mechanical Engineers
Paper No: DETC97/VIB-4216
https://doi.org/10.1115/DETC97/VIB-4216
View Paper titled, Dynamics of Nonlinear Mechanical Systems and Virtual Reality: An Educational Tool for Engineering
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Topics: Dynamics (Mechanics), Virtual reality, Engineering prototypes, Multibody systems, Nonlinear systems, Particulate matter, Computer simulation, Equations of motion, Pendulums, Rotors
Journal Articles

Design of Active Magnetic Bearing Controllers for Rotors Subjected to Gas Seal Forces

Jonas S. Lauridsen, Ilmar F. Santos
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. September 2018, 140(9): 091015.
Paper No: DS-17-1254
https://doi.org/10.1115/1.4039665
Published Online: April 30, 2018
View Article titled, Design of Active Magnetic Bearing Controllers for Rotors Subjected to Gas Seal Forces
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Topics: Control equipment, Design, Rotors
Journal Articles

On-Site Identification of Dynamic Annular Seal Forces in Turbo Machinery Using Active Magnetic Bearings: An Experimental Investigation

Jonas S. Lauridsen, Ilmar F. Santos
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082501.
Paper No: GTP-17-1106
https://doi.org/10.1115/1.4038755
Published Online: April 12, 2018
View Article titled, On-Site Identification of Dynamic Annular Seal Forces in Turbo Machinery Using Active Magnetic Bearings: An Experimental Investigation
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Topics: Damping, Dynamics (Mechanics), Excitation, Fluids, Machinery, Magnetic bearings, Modeling, Rotors, Stiffness, Test facilities
Journal Articles

Design and Calibration of a Full Scale Active Magnetic Bearing Based Test Facility for Investigating Rotordynamic Properties of Turbomachinery Seals in Multiphase Flow

Andreas Jauernik Voigt, Christian Mandrup-Poulsen, Kenny Krogh Nielsen, Ilmar F. Santos
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2017, 139(5): 052505.
Paper No: GTP-16-1397
https://doi.org/10.1115/1.4035176
Published Online: January 4, 2017
View Article titled, Design and Calibration of a Full Scale Active Magnetic Bearing Based Test Facility for Investigating Rotordynamic Properties of Turbomachinery Seals in Multiphase Flow
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Topics: Calibration, Design, Manufacturing, Multiphase flow, Sensors, Test facilities, Turbomachinery, Flow (Dynamics), Magnetic bearings, Pistons
Journal Articles

On the Controllability and Observability of Actively Lubricated Journal Bearings With Pads Featuring Different Nozzle-Pivot Configurations

Jorge G. Salazar, Ilmar F. Santos
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. May 2017, 139(3): 031702.
Paper No: TRIB-15-1356
https://doi.org/10.1115/1.4033053
Published Online: October 10, 2016
View Article titled, On the Controllability and Observability of Actively Lubricated Journal Bearings With Pads Featuring Different Nozzle-Pivot Configurations
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Topics: Bearings, Nozzles, Stress, Lubrication
Proceedings Papers

Design and Calibration of a Full Scale Active Magnetic Bearing Based Test Facility for Investigating Rotordynamic Properties of Turbomachinery Seals in Multiphase Flow

Andreas Jauernik Voigt, Christian Mandrup-Poulsen, Kenny Krogh Nielsen, Ilmar F. Santos
Proc. ASME. GT2016, Volume 7B: Structures and Dynamics, V07BT31A033, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57893
https://doi.org/10.1115/GT2016-57893
View Paper titled, Design and Calibration of a Full Scale Active Magnetic Bearing Based Test Facility for Investigating Rotordynamic Properties of Turbomachinery Seals in Multiphase Flow
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Topics: Calibration, Design, Magnetic bearings, Multiphase flow, Test facilities, Turbomachinery, Ocean engineering, Sensors, Compressors, Pumps
Proceedings Papers

CFD Applied for the Identification of Stiffness and Damping Properties for Smooth Annular Turbomachinery Seals in Multiphase Flow

Andreas Jauernik Voigt, Piero Iudiciani, Kenny Krogh Nielsen, Ilmar F. Santos
Proc. ASME. GT2016, Volume 7B: Structures and Dynamics, V07BT31A034, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57905
https://doi.org/10.1115/GT2016-57905
View Paper titled, CFD Applied for the Identification of Stiffness and Damping Properties for Smooth Annular Turbomachinery Seals in Multiphase Flow
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Topics: Computational fluid dynamics, Damping, Multiphase flow, Stiffness, Turbomachinery, Bubbly flow, Rotors, Collaboration, Modeling, Pressure
Proceedings Papers

Dynamic Interaction Between Rotor and Axially-Magnetized Passive Magnetic Bearing Considering Magnetic Eccentricity

Søren Enemark, Ilmar F. Santos
Proc. ASME. IMECE2014, Volume 4A: Dynamics, Vibration, and Control, V04AT04A055, November 14–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-38032
https://doi.org/10.1115/IMECE2014-38032
View Paper titled, Dynamic Interaction Between Rotor and Axially-Magnetized Passive Magnetic Bearing Considering Magnetic Eccentricity
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Topics: Magnetic bearings, Rotors, Bearings, Magnets, Cylinders, Stiffness, Disks, Magnetic fields, Neodymium, Damping
Proceedings Papers

Control System Design for Active Lubrication With Theoretical and Experimental Examples

Ilmar F. Santos, Alexandre Scalabrin
Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A081, May 8–11, 2000
Publisher: American Society of Mechanical Engineers
Paper No: 2000-GT-0643
https://doi.org/10.1115/2000-GT-0643
View Paper titled, Control System Design for Active Lubrication With Theoretical and Experimental Examples
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Topics: Control systems, Design, Lubrication, Bearings, Rotors, Damping, Dynamics (Mechanics), Eigenvalues, Equations of motion, Frequency response
Proceedings Papers

Theoretical and Experimental Investigation of Force Estimation Errors Using Active Magnetic Bearings With Embedded Hall Sensors

Andreas Jauernik Voigt, Ilmar F. Santos
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 779-793, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68282
https://doi.org/10.1115/GT2012-68282
View Paper titled, Theoretical and Experimental Investigation of Force Estimation Errors Using Active Magnetic Bearings With Embedded Hall Sensors
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Topics: Errors, Magnetic bearings, Sensors, Poles (Building), Rotors, Calibration, Currents, Dynamic testing (Engineering), Dynamic testing (Materials), Finite element analysis
Proceedings Papers

On the Nonlinear Dynamics of Two Types of Backup Bearings: Theoretical and Experimental Aspects

Said Lahriri, Ilmar F. Santos, Hans I. Weber, Henning Hartmann
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 805-821, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68319
https://doi.org/10.1115/GT2012-68319
View Paper titled, On the Nonlinear Dynamics of Two Types of Backup Bearings: Theoretical and Experimental Aspects
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Topics: Bearings, Nonlinear dynamics, Rotors, Particle spin, Rotation, Spin (Aerodynamics), Friction, Stators, Vibration, Disks
Proceedings Papers

Experimental Investigations of Active Air Bearings

Stefano Morosi, Ilmar F. Santos
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 901-910, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68766
https://doi.org/10.1115/GT2012-68766
View Paper titled, Experimental Investigations of Active Air Bearings
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Topics: Air bearings, Bearings, Bending (Stress), Computer software, Control equipment, Control systems, Damping, Design, Engineering prototypes, Foil bearings
Journal Articles

On The Nonlinear Dynamics of Two Types of Backup Bearings — Theoretical and Experimental Aspects

Said Lahriri, Ilmar F. Santos, Hans I. Weber, Henning Hartmann
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Gas Turbines: Structures And Dynamics
J. Eng. Gas Turbines Power. November 2012, 134(11): 112503.
https://doi.org/10.1115/1.4007166
Published Online: September 28, 2012
View Article titled, On The Nonlinear Dynamics of Two Types of Backup Bearings — Theoretical and Experimental Aspects
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Topics: Bearings, Disks, Friction, Rotors, Clearances (Engineering), Stators, Bearing design, Vibration, Equations of motion
Proceedings Papers

Controllable Radial Oil Injection Applied to Main Engine Bearings: Hybrid Bearing Configurations and Control Pressure Rules

Edgar A. Estupinan, Ilmar F. Santos
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 145-147, October 17–20, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2010-41170
https://doi.org/10.1115/IJTC2010-41170
View Paper titled, Controllable Radial Oil Injection Applied to Main Engine Bearings: Hybrid Bearing Configurations and Control Pressure Rules
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Topics: Bearings, Engines, Pressure, Lubrication, Friction, Combustion, Fluid film lubrication, Fluid films, Hydrostatics, Internal combustion engines
Journal Articles

Elastohydrodynamics Applied to Active Tilting-Pad Journal Bearings

Asger M. Haugaard, Ilmar F. Santos
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2010, 132(2): 021702.
https://doi.org/10.1115/1.4000721
Published Online: March 25, 2010
View Article titled, Elastohydrodynamics Applied to Active Tilting-Pad Journal Bearings
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Topics: Bearings, Pressure, Rotors, Stress, Journal bearings, Stiffness, Flow (Dynamics), Degrees of freedom, Damping, Lubrication
Proceedings Papers

Modeling of Flexible Tilting Pad Journal Bearings With Radial Oil Injection

Asger M. Haugaard, Ilmar F. Santos
Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 335-337, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2008-71097
https://doi.org/10.1115/IJTC2008-71097
View Paper titled, Modeling of Flexible Tilting Pad Journal Bearings With Radial Oil Injection
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Topics: Journal bearings, Modeling, Flow (Dynamics), Rotors, Finite element analysis, Pressure, Servomechanisms, Valves, Degrees of freedom, Differential equations
Proceedings Papers

Linking Rigid and Flexible Multibody Systems via Thin Fluid Films Actively Controlled

Edgar A. Estupinan, Ilmar F. Santos
Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 367-369, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2008-71177
https://doi.org/10.1115/IJTC2008-71177
View Paper titled, Linking Rigid and Flexible Multibody Systems via Thin Fluid Films Actively Controlled
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Topics: Fluid films, Multibody systems, Pressure, Lubrication, Journal bearings, Bearings, Dynamics (Mechanics), Machinery, Vibration, Actuators
Proceedings Papers

Feasibility of Applying Active Lubrication to Reduce Vibration in Industrial Compressors

Ilmar F. Santos, Rodrigo Nicoletti, Alexandre Scalabrin
Proc. ASME. GT2003, Volume 4: Turbo Expo 2003, 481-489, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38225
https://doi.org/10.1115/GT2003-38225
View Paper titled, Feasibility of Applying Active Lubrication to Reduce Vibration in Industrial Compressors
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Topics: Compressors, Lubrication, Vibration, Bearings, Dampers, Damping, Design, Stability, Stiffness, Dynamics (Mechanics)
Proceedings Papers

A Study of Active Rotor-Blade Vibration Control Using Electro-Magnetic Actuation: Part 1 — Theory

Rene´ H. Christensen, Ilmar F. Santos
Proc. ASME. GT2004, Volume 6: Turbo Expo 2004, 651-660, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53509
https://doi.org/10.1115/GT2004-53509
View Paper titled, A Study of Active Rotor-Blade Vibration Control Using Electro-Magnetic Actuation: Part 1 — Theory
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Topics: Blades, Rotors, Vibration control, Control equipment, Actuators, Vibration, Computer simulation, Design, Modal analysis, Sensor placement
Proceedings Papers

A Study of Active Rotor-Blade Vibration Control Using Electro-Magnetic Actuation: Part 2 — Experiments

Rene´ H. Christensen, Ilmar F. Santos
Proc. ASME. GT2004, Volume 6: Turbo Expo 2004, 661-669, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53512
https://doi.org/10.1115/GT2004-53512
View Paper titled, A Study of Active Rotor-Blade Vibration Control Using Electro-Magnetic Actuation: Part 2 — Experiments
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Topics: Blades, Rotors, Vibration control, Control equipment, Actuators, Design, Vibration, Electromagnetic actuators, Machine components, Rotating blades