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Alan B. Palazzolo
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Journal Articles

Parametric Study of Flexure Pivot Bearing Induced Thermal Bow-Rotor Instability (Morton Effect)

Dongil Shin, Junho Suh, Alan B. Palazzolo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071801.
Paper No: TRIB-21-1263
https://doi.org/10.1115/1.4052679
Published Online: December 22, 2021
View Article titled, Parametric Study of Flexure Pivot Bearing Induced Thermal Bow-Rotor Instability (Morton Effect)
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Topics: Bearings, Rotors, Temperature, Vibration, Bending (Stress), Stiffness, Simulation
Journal Articles

Tilting Pad Bearing Pivot Friction and Design Effects on Thermal Bow-Induced Rotor Vibration

Dongil Shin, Alan B. Palazzolo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. December 2021, 143(12): 121804.
Paper No: TRIB-20-1483
https://doi.org/10.1115/1.4050427
Published Online: March 29, 2021
View Article titled, Tilting Pad Bearing Pivot Friction and Design Effects on Thermal Bow-Induced Rotor Vibration
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Topics: Bearings, Design, Friction, Rotors, Simulation, Stiffness, Transients (Dynamics), Vibration, Temperature
Journal Articles

A Review of Journal Bearing Induced Nonlinear Rotordynamic Vibrations

Sitae Kim, Dongil Shin, Alan B. Palazzolo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2021, 143(11): 111802.
Paper No: TRIB-20-1302
https://doi.org/10.1115/1.4049789
Published Online: February 12, 2021
View Article titled, A Review of Journal Bearing Induced Nonlinear Rotordynamic Vibrations
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Topics: Bearings, Bifurcation, Journal bearings, Rotors, Modeling
Proceedings Papers

Squeeze Film Damper Suppression of Thermal Bow: Morton Effect Instability

Dongil Shin, Alan B. Palazzolo, Xiaomeng Tong
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A008, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14825
https://doi.org/10.1115/GT2020-14825
View Paper titled, Squeeze Film Damper Suppression of Thermal Bow: Morton Effect Instability
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Topics: Dampers, Journal bearings, Simulation, Thermohydrodynamics, Vibration
Journal Articles

Squeeze Film Damper Suppression of Thermal Bow-Morton Effect Instability

Dongil Shin, Alan B. Palazzolo, Xiaomeng Tong
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2020, 142(12): 121013.
Paper No: GTP-20-1389
https://doi.org/10.1115/1.4048602
Published Online: December 1, 2020
View Article titled, Squeeze Film Damper Suppression of Thermal Bow-Morton Effect Instability
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Topics: Bearings, Dampers, Damping, Rotors, Simulation, Stiffness, Vibration, Transients (Dynamics), Lubricants, Journal bearings
Proceedings Papers

Fault Tolerant Control of Magnetic Bearings

Uhn Joo Na, Andrew Provenza, Alan B. Palazzolo, Benjamin Choi, Gerald Montague, Albert Kascak
Proc. ASME. IDETC-CIE2001, Volume 6C: 18th Biennial Conference on Mechanical Vibration and Noise, 3135-3141, September 9–12, 2001
Publisher: American Society of Mechanical Engineers
Paper No: DETC2001/VIB-21751
https://doi.org/10.1115/DETC2001/VIB-21751
View Paper titled, Fault Tolerant Control of Magnetic Bearings
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Topics: Magnetic bearings, Failure, Algorithms, Actuators, Bearings, Currents, Databases, Machinery, Magnetic fields, Simulation
Journal Articles

Tilting Pad Journal Bearing Misalignment Effect on Thermally Induced Synchronous Instability (Morton Effect)

Dongil Shin, Alan B. Palazzolo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. March 2021, 143(3): 031802.
Paper No: TRIB-19-1357
https://doi.org/10.1115/1.4048164
Published Online: September 21, 2020
View Article titled, Tilting Pad Journal Bearing Misalignment Effect on Thermally Induced Synchronous Instability (Morton Effect)
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Topics: Bearings, Rotors, Vibration, Journal bearings, Film thickness, Simulation, Temperature
Proceedings Papers

High Temperature Magnetic Thrust Bearing: Theory and Experiment

Mohammad W. Mohiuddin, Alan B. Palazzolo, Randy P. Tucker, Desireddy V. Reddy, Andrew J. Provenza, Albert F. Kascak
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT33A010, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91544
https://doi.org/10.1115/GT2019-91544
View Paper titled, High Temperature Magnetic Thrust Bearing: Theory and Experiment
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Topics: High temperature, Thrust bearings, Disks, Stress, Temperature, Thrust, Bearings, Design, Magnetic bearings, Magnetic fields
Journal Articles

Pad–Pivot Friction Effect on Nonlinear Response of a Rotor Supported by Tilting-Pad Journal Bearings

Sitae Kim, Alan B. Palazzolo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. September 2019, 141(9): 091701.
Paper No: TRIB-18-1289
https://doi.org/10.1115/1.4043971
Published Online: June 27, 2019
View Article titled, Pad–Pivot Friction Effect on Nonlinear Response of a Rotor Supported by Tilting-Pad Journal Bearings
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Topics: Friction, Journal bearings, Rotors, Bifurcation
Journal Articles

Bifurcation Analysis of a Rotor Supported by Five-Pad Tilting Pad Journal Bearings Using Numerical Continuation

Sitae Kim, Alan B. Palazzolo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. March 2018, 140(2): 021701.
Paper No: TRIB-16-1300
https://doi.org/10.1115/1.4037699
Published Online: September 29, 2017
View Article titled, Bifurcation Analysis of a Rotor Supported by Five-Pad Tilting Pad Journal Bearings Using Numerical Continuation
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Topics: Bifurcation, Journal bearings, Rotors, Bearings, Viscosity
Journal Articles

Shooting With Deflation Algorithm-Based Nonlinear Response and Neimark-Sacker Bifurcation and Chaos in Floating Ring Bearing Systems

Sitae Kim, Alan B. Palazzolo
Journal: Journal of Computational and Nonlinear Dynamics
Publisher: ASME
Article Type: Research-Article
J. Comput. Nonlinear Dynam. May 2017, 12(3): 031003.
Paper No: CND-15-1288
https://doi.org/10.1115/1.4034733
Published Online: December 5, 2016
View Article titled, Shooting With Deflation Algorithm-Based Nonlinear Response and Neimark-Sacker Bifurcation and Chaos in Floating Ring Bearing Systems
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Topics: Algorithms, Bearings, Bifurcation, Chaos, Rotors, Fluid films, Limit cycles
Proceedings Papers

Component Synthesis of Multi-Case, Rotating Machinery Trains by the Generalized Receptance Approach

Alan B. Palazzolo, Bo Ping Wang, Walter D. Pilkey
Proc. ASME. GT1983, Volume 5: Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries, V005T12A025, March 27–31, 1983
Publisher: American Society of Mechanical Engineers
Paper No: 83-GT-229
https://doi.org/10.1115/83-GT-229
View Paper titled, Component Synthesis of Multi-Case, Rotating Machinery Trains by the Generalized Receptance Approach
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Topics: Machinery, Trains, Eigenvalues, Rotors
Proceedings Papers

Active Vibration Control of Rotating Machinery Using Piezoelectric Actuators Incorporating Flexible Casing Effects

Timothy S. Barrett, Alan B. Palazzolo, Albert F. Kascak
Proc. ASME. GT1993, Volume 3B: General, V03BT16A049, May 24–27, 1993
Publisher: American Society of Mechanical Engineers
Paper No: 93-GT-293
https://doi.org/10.1115/93-GT-293
View Paper titled, Active Vibration Control of Rotating Machinery Using Piezoelectric Actuators Incorporating Flexible Casing Effects
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Topics: Machinery, Piezoelectric actuators, Vibration control, Feedback, Actuators, Rotors, Simulation, Active damping, Bearings, Dynamics (Mechanics)
Proceedings Papers

Active Vibration Control of Rotating Machinery With a Hybrid Piezo-Hydraulic Actuator System

Punan Tang, Alan B. Palazzolo, Albert F. Kascak, Gerald T. Montague
Proc. ASME. GT1994, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General, V005T14A005, June 13–16, 1994
Publisher: American Society of Mechanical Engineers
Paper No: 94-GT-053
https://doi.org/10.1115/94-GT-053
View Paper titled, Active Vibration Control of Rotating Machinery With a Hybrid Piezo-Hydraulic Actuator System
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Topics: Actuators, Machinery, Vibration control, Simulation, Vibration, Aircraft engines, Copper, Finite element analysis, Gas turbines, Manufacturing
Proceedings Papers

Rotordynamic Force Prediction of Whirling Centrifugal Impeller Shroud Passages Using Computational Fluid Dynamic Techniques

J. Jeffrey Moore, Alan B. Palazzolo
Proc. ASME. GT1999, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, V004T03A036, June 7–10, 1999
Publisher: American Society of Mechanical Engineers
Paper No: 99-GT-334
https://doi.org/10.1115/99-GT-334
View Paper titled, Rotordynamic Force Prediction of Whirling Centrifugal Impeller Shroud Passages Using Computational Fluid Dynamic Techniques
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Topics: Computational fluid dynamics, Impellers, Whirls, Design, Flow (Dynamics), Rotordynamics, Aerodynamics, Centrifugal pumps, Damping, Finite element analysis
Proceedings Papers

High Temperature Characterization of a Radial Magnetic Bearing for Turbomachinery

Andrew J. Provenza, Gerald T. Montague, Mark J. Jansen, Alan B. Palazzolo, Ralph H. Jansen
Proc. ASME. GT2003, Volume 4: Turbo Expo 2003, 633-642, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38870
https://doi.org/10.1115/GT2003-38870
View Paper titled, High Temperature Characterization of a Radial Magnetic Bearing for Turbomachinery
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Topics: High temperature, Magnetic bearings, Turbomachinery, Temperature, Circuits, Knudsen number, Rotors, Bearings, Cycles, Magnetic fields
Proceedings Papers

An Efficient Algorithm for Blade Loss Simulations Using a High Fidelity Ball Bearing and Damper Model

Guangyoung Sun, Nikhil Kaushik, Alan B. Palazzolo, Andrew J. Provenza, Charles Lawrence, Kelly Carney
Proc. ASME. IDETC-CIE2003, Volume 5: 19th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C, 1011-1020, September 2–6, 2003
Publisher: American Society of Mechanical Engineers
Paper No: DETC2003/VIB-48424
https://doi.org/10.1115/DETC2003/VIB-48424
View Paper titled, An Efficient Algorithm for Blade Loss Simulations Using a High Fidelity Ball Bearing and Damper Model
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Topics: Algorithms, Ball bearings, Blades, Dampers, Simulation, Stress, Bearings, Gas turbines, Rotors, Whirls
Journal Articles

High Temperature Characterization of a Radial Magnetic Bearing for Turbomachinery

Andrew J. Provenza, Gerald T. Montague, Mark J. Jansen, Alan B. Palazzolo, Ralph H. Jansen
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2005, 127(2): 437–444.
https://doi.org/10.1115/1.1807413
Published Online: April 15, 2005
View Article titled, High Temperature Characterization of a Radial Magnetic Bearing for Turbomachinery
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Topics: Magnetic bearings, Rotors, Temperature, High temperature, Bearings, Stress, Stators
Journal Articles

Single Plane Radial, Magnetic Bearings Biased With Poles Containing Permanent Magnets

Andrew Kenny, Alan B. Palazzolo, Mem. ASME
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Technical Papers
J. Mech. Des. March 2003, 125(1): 178–185.
https://doi.org/10.1115/1.1541630
Published Online: March 21, 2003
View Article titled, Single Plane Radial, Magnetic Bearings Biased With Poles Containing Permanent Magnets
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Topics: Bearings, Permanent magnets, Poles (Building), Stiffness, Stress, Magnetic bearings, Magnets, Finite element model, Circuits
Journal Articles

Test and Theory Correlation Study for a Flexible Rotor on Fault-Tolerant Magnetic Bearings

Uhn Joo Na, Research Engineer, Alan B. Palazzolo, Professor, Andrew Provenza
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. July 2002, 124(3): 359–366.
https://doi.org/10.1115/1.1467652
Published Online: June 12, 2002
View Article titled, Test and Theory Correlation Study for a Flexible Rotor on Fault-Tolerant Magnetic Bearings
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Topics: Bearings, Currents, Failure, Magnetic bearings, Magnetic fields, Rotors, Simulation, Machinery