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Journal Articles

A Model and Experimental Validation for a Piston Rings—Squeeze Film Damper: A Step Toward Quantifying Air Ingestion

Bonjin Koo, Luis San Andrés
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2023, 145(4): 041012.
Paper No: GTP-22-1403
https://doi.org/10.1115/1.4055712
Published Online: December 13, 2022
View Article titled, A Model and Experimental Validation for a Piston Rings—Squeeze Film Damper: A Step Toward Quantifying Air Ingestion
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Topics: Dampers, Damping, Pressure, Piston rings, Pistons, Lubricants, Whirls
Proceedings Papers

A Model and Experimental Validation for a Piston Rings - Squeeze Film Damper: A Step Toward Quantifying Air Ingestion

Bonjin Koo, Luis San Andrés
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A007, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81990
https://doi.org/10.1115/GT2022-81990
View Paper titled, A Model and Experimental Validation for a Piston Rings - Squeeze Film Damper: A Step Toward Quantifying Air Ingestion
Open the PDF for A Model and Experimental Validation for a Piston Rings - Squeeze Film Damper: A Step Toward Quantifying Air Ingestion in another window
Topics: Dampers, Piston rings
Proceedings Papers

On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions

Luis San Andrés, Xueliang Lu, Bonjin Koo, Scott Tran
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A005, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14182
https://doi.org/10.1115/GT2020-14182
View Paper titled, On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions
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Topics: Dampers, Damping, Bearings, Lubricants, Rotors, Stiffness, Clearances (Engineering), Flow (Dynamics), Stress, Compressibility
Journal Articles

On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions

Xueliang Lu, Luis San Andrés, Bonjin Koo, Scott Tran
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2021, 143(1): 011014.
Paper No: GTP-20-1464
https://doi.org/10.1115/1.4048700
Published Online: January 4, 2021
View Article titled, On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions
Open the PDF for On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions in another window
Topics: Dampers, Flow (Dynamics), Stiffness, Bearings, Damping, Lubricants, Excitation, Stress
Journal Articles

Model and Experimental Verification of the Dynamic Forced Performance of a Tightly Sealed Squeeze Film Damper Supplied With a Bubbly Mixture

Luis San Andrés, Bonjin Koo
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2020, 142(1): 011023.
Paper No: GTP-19-1415
https://doi.org/10.1115/1.4044994
Published Online: December 12, 2019
View Article titled, Model and Experimental Verification of the Dynamic Forced Performance of a Tightly Sealed Squeeze Film Damper Supplied With a Bubbly Mixture
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Topics: Dampers, Damping, Flow (Dynamics), Lubricants, Pressure, Stiffness, Whirls, Inertia (Mechanics)
Proceedings Papers

Model and Experimental Verification of the Dynamic Forced Performance of a Tightly Sealed Squeeze Film Damper Supplied With a Bubbly Mixture

Luis San Andrés, Bonjin Koo
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A010, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90330
https://doi.org/10.1115/GT2019-90330
View Paper titled, Model and Experimental Verification of the Dynamic Forced Performance of a Tightly Sealed Squeeze Film Damper Supplied With a Bubbly Mixture
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Topics: Dampers, Pressure, Lubricants, Damping, Cycles, Flow (Dynamics), Inertia (Mechanics), Piston rings, Stiffness, Whirls
Journal Articles

Effect of Oil Supply Pressure on the Force Coefficients of a Squeeze Film Damper Sealed With Piston Rings

Sung-Hwa Jeung, Luis San Andrés, Sean Den, Bonjin Koo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. June 2019, 141(6): 061701.
Paper No: TRIB-18-1406
https://doi.org/10.1115/1.4043238
Published Online: April 16, 2019
View Article titled, Effect of Oil Supply Pressure on the Force Coefficients of a Squeeze Film Damper Sealed With Piston Rings
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Topics: Dampers, Damping, Electrical conductance, Flow (Dynamics), Lubricants, Piston rings, Pressure, Whirls
Journal Articles

Experimental Force Coefficients for Two Sealed Ends Squeeze Film Dampers (Piston Rings and O-Rings): An Assessment of Their Similarities and Differences

Luis San Andrés, Bonjin Koo, Sung-Hwa Jeung
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2019, 141(2): 021024.
Paper No: GTP-18-1451
https://doi.org/10.1115/1.4040902
Published Online: October 4, 2018
View Article titled, Experimental Force Coefficients for Two Sealed Ends Squeeze Film Dampers (Piston Rings and O-Rings): An Assessment of Their Similarities and Differences
Open the PDF for Experimental Force Coefficients for Two Sealed Ends Squeeze Film Dampers (Piston Rings and O-Rings): An Assessment of Their Similarities and Differences in another window
Topics: Dampers, Damping, Lubricants, Pressure, Seals, Stiffness, Flow (Dynamics), Piston rings, Whirls
Proceedings Papers

Experimental Force Coefficients for Two Sealed Ends Squeeze Film Dampers (Piston Rings and O-Rings): An Assessment of Their Similarities and Differences

Luis San Andrés, Bonjin Koo, Sung-Hwa Jeung
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A032, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76224
https://doi.org/10.1115/GT2018-76224
View Paper titled, Experimental Force Coefficients for Two Sealed Ends Squeeze Film Dampers (Piston Rings and O-Rings): An Assessment of Their Similarities and Differences
Open the PDF for Experimental Force Coefficients for Two Sealed Ends Squeeze Film Dampers (Piston Rings and O-Rings): An Assessment of Their Similarities and Differences in another window
Topics: Dampers, Piston rings, Seals, Pressure, Damping, Lubricants, Inertia (Mechanics), Bearings, Cavitation, Flow (Dynamics)
Journal Articles

A Flow Starvation Model for Tilting Pad Journal Bearings and Evaluation of Frequency Response Functions: A Contribution Toward Understanding the Onset of Low Frequency Shaft Motions

Luis San Andrés, Bonjin Koo, Makoto Hemmi
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2018, 140(5): 052506.
Paper No: GTP-17-1382
https://doi.org/10.1115/1.4038043
Published Online: January 3, 2018
View Article titled, A Flow Starvation Model for Tilting Pad Journal Bearings and Evaluation of Frequency Response Functions: A Contribution Toward Understanding the Onset of Low Frequency Shaft Motions
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Topics: Bearings, Flow (Dynamics), Stress, Frequency response, Rotors, Damping, Lubricants
Proceedings Papers

A Flow Starvation Model for Tilting Pad Journal Bearings and Evaluation of Frequency Response Functions: A Contribution Towards Understanding the Onset of Low Frequency Shaft Motions

Luis San Andrés, Bonjin Koo, Makoto Hemmi
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A030, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64822
https://doi.org/10.1115/GT2017-64822
View Paper titled, A Flow Starvation Model for Tilting Pad Journal Bearings and Evaluation of Frequency Response Functions: A Contribution Towards Understanding the Onset of Low Frequency Shaft Motions
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Topics: Flow (Dynamics), Frequency response, Journal bearings, Bearings, Lubricants, Rotors, Stress, Damping, Lubrication, Fluids
Proceedings Papers

Effects of Mechanical Preloads on the Rotordynamic Performance of a Rotor Supported on 3 Pad Gas Foil Journal Bearings

Kyuho Sim, Bonjin Koo, Jong Sung Lee, Tae Ho Kim
Proc. ASME. GT2014, Volume 7B: Structures and Dynamics, V07BT32A015, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25849
https://doi.org/10.1115/GT2014-25849
View Paper titled, Effects of Mechanical Preloads on the Rotordynamic Performance of a Rotor Supported on 3 Pad Gas Foil Journal Bearings
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Topics: Journal bearings, Rotors, Bearings, Stress, Strips, Clearances (Engineering), Displacement, Electric motors, Permanent magnets, Sensors
Journal Articles

Effects of Mechanical Preloads on the Rotordynamic Performance of a Rotor Supported on Three-Pad Gas Foil Journal Bearings

Kyuho Sim, Bonjin Koo, Jong Sung Lee, Tae Ho Kim
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2014, 136(12): 122503.
Paper No: GTP-14-1215
https://doi.org/10.1115/1.4027745
Published Online: June 27, 2014
View Article titled, Effects of Mechanical Preloads on the Rotordynamic Performance of a Rotor Supported on Three-Pad Gas Foil Journal Bearings
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Topics: Clearances (Engineering), Rotors, Bearings, Thrust, Stress