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Journal Articles

Digital Twin Implementation for Three-Dimensional Rotordynamic Response via Physics-Informed LSTM Neural Networks

Jongin Yang, Joseph Oh, Baik Jin Kim, Alan Palazzolo
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 2024, 146(2): 021003.
Paper No: VIB-23-1240
https://doi.org/10.1115/1.4065714
Published Online: July 2, 2024
View Article titled, Digital Twin Implementation for Three-Dimensional Rotordynamic Response via Physics-Informed LSTM Neural Networks
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Topics: Artificial neural networks, Physics, Rotors, Rotordynamics, Digital twin
Proceedings Papers

Numerical Modeling of Forced Air Convection for Thermal Management in Automotive ECU: A Component and System Level Study

Joseph Oh, Kenneth Taylor
Proc. ASME. InterPACK2023, ASME 2023 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T02A003, October 24–26, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2023-110688
https://doi.org/10.1115/IPACK2023-110688
View Paper titled, Numerical Modeling of Forced Air Convection for Thermal Management in Automotive ECU: A Component and System Level Study
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Topics: Computer simulation, Convection, Cooling, Heat sinks, Heat transfer, Thermal management
Proceedings Papers

Radial Interference Fit and Centrifugal Force Effects on Lateral Rotordynamic Response

Baik Jin Kim, Joseph Oh, Alan Palazzolo
Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT26A006, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101837
https://doi.org/10.1115/GT2023-101837
View Paper titled, Radial Interference Fit and Centrifugal Force Effects on Lateral Rotordynamic Response
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Topics: Centrifugal force, Disks, Finite element analysis, Press fits
Journal Articles

Test and Theory for a Refined Structural Model of a Hirth Coupling

Baik Jin Kim, Joseph Oh, Alan Palazzolo
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2022, 144(3): 031027.
Paper No: GTP-21-1306
https://doi.org/10.1115/1.4052088
Published Online: February 21, 2022
View Article titled, Test and Theory for a Refined Structural Model of a Hirth Coupling
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Topics: Finite element analysis, Rotor assembly, Rotors, Stiffness, Stress, Stress concentration, Geometry, Pressure, Knudsen number, Couplings
Proceedings Papers

Test and Theory for a Refined Structural Model of a Hirth Coupling

Baik Jin Kim, Joseph Oh, Alan Palazzolo
Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT28A005, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59970
https://doi.org/10.1115/GT2021-59970
View Paper titled, Test and Theory for a Refined Structural Model of a Hirth Coupling
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Topics: Algorithms, Compressors, Computation, Deformation, Finishes, Finite element analysis, Finite element methods, Force measurement, Geometry, Modal analysis
Journal Articles

Computational Fluid Dynamics—Machine Learning Prediction of Machinery Coupling Windage Heating and Power Loss

Ahmad Dawahdeh, Joseph Oh, Tianbo Zhai, Alan Palazzolo
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. August 2021, 143(8): 082201.
Paper No: HT-20-1501
https://doi.org/10.1115/1.4051351
Published Online: June 28, 2021
View Article titled, Computational Fluid Dynamics—Machine Learning Prediction of Machinery Coupling Windage Heating and Power Loss
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Topics: Computational fluid dynamics, Machine learning, Simulation, Temperature
Journal Articles

Three-Dimensional Solid Finite Element Contact Model for Rotordynamic Analysis: Experiment and Simulation

Joseph Oh, Baik Jin Kim, Alan Palazzolo
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. June 2021, 143(3): 031007.
Paper No: VIB-20-1347
https://doi.org/10.1115/1.4048556
Published Online: October 13, 2020
View Article titled, Three-Dimensional Solid Finite Element Contact Model for Rotordynamic Analysis: Experiment and Simulation
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Topics: Bearings, Finite element analysis, Rotor assembly, Rotors, Stiffness, Surface roughness, Stress
Journal Articles

Stability of Non-Axisymmetric Rotor and Bearing Systems Modeled With Three-Dimensional-Solid Finite Elements

Joseph Oh, Alan Palazzolo, Lingnan Hu
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. February 2020, 142(1): 011010.
Paper No: VIB-19-1059
https://doi.org/10.1115/1.4045099
Published Online: November 18, 2019
View Article titled, Stability of Non-Axisymmetric Rotor and Bearing Systems Modeled With Three-Dimensional-Solid Finite Elements
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Topics: Bearings, Rotors, Stability, Damping