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Proceedings Papers

A Numerical Thermohydrodynamic Study of Fixed Pad Oil Lubricated Thrust Bearings

Saeid Dousti, Paul Allaire, Jianming Cao, Bradley Nichols, Timothy Dimond
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T26A022, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91596
https://doi.org/10.1115/GT2019-91596
View Paper titled, A Numerical Thermohydrodynamic Study of Fixed Pad Oil Lubricated Thrust Bearings
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Topics: Thermohydrodynamics, Thrust bearings, Lubricants, Stress, Temperature, Flow (Dynamics), Heat conduction, Heating, High temperature, Machinery
Proceedings Papers

Dynamic Properties of Multi-Lobe Water Lubricated Bearings With Temporal and Convective Inertia Considerations

Saeid Dousti, Paul Allaire, Bradley Nichols, Jianming Cao, Timothy Dimond
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A016, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63687
https://doi.org/10.1115/GT2017-63687
View Paper titled, Dynamic Properties of Multi-Lobe Water Lubricated Bearings With Temporal and Convective Inertia Considerations
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Topics: Bearings, Inertia (Mechanics), Water, Geometry, Damping, Lubricants, Pumps, Stability, Stiffness
Proceedings Papers

Auxiliary Bearing System Optimization for AMB Supported Rotors Based on Rotor Drop Analysis: Part I — Rotor Drop Analysis Method

Jianming Cao, Paul Allaire, Timothy Dimond, Saeid Dousti
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT30A002, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56323
https://doi.org/10.1115/GT2016-56323
View Paper titled, Auxiliary Bearing System Optimization for AMB Supported Rotors Based on Rotor Drop Analysis: Part I — Rotor Drop Analysis Method
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Topics: Bearings, Optimization, Rotors, Stress, Ball bearings, American Petroleum Institute, Design, Experimental methods, Finite element analysis, Magnetic bearings
Proceedings Papers

Auxiliary Bearing System Optimization for AMB Supported Rotors Based on Rotor Drop Analysis: Part II — Optimization for Example Vertical and Horizontal Machines

Jianming Cao, Paul Allaire, Timothy Dimond, Saeid Dousti
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT30A003, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56324
https://doi.org/10.1115/GT2016-56324
View Paper titled, Auxiliary Bearing System Optimization for AMB Supported Rotors Based on Rotor Drop Analysis: Part II — Optimization for Example Vertical and Horizontal Machines
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Topics: Bearings, Machinery, Optimization, Rotors, Design, Ball bearings, Bearing design, Compressors, Damage, Damping
Journal Articles

Coupled Lateral and Torsional Nonlinear Transient Rotor–Bearing System Analysis With Applications

Jianming Cao, Paul Allaire, Timothy Dimond
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. September 2015, 137(9): 091011.
Paper No: DS-14-1463
https://doi.org/10.1115/1.4030612
Published Online: September 1, 2015
View Article titled, Coupled Lateral and Torsional Nonlinear Transient Rotor–Bearing System Analysis With Applications
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Topics: Bearings, Engines, Motors, Rotors, Torque, Transient analysis, Transients (Dynamics), Disks
Proceedings Papers

Reduction of Vibration and Power Loss in Industrial Turbochargers With Improved Tilting Pad Bearing Design

Jianming Cao, Timothy Dimond, Paul Allaire
Proc. ASME. GT2015, Volume 7A: Structures and Dynamics, V07AT30A004, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42862
https://doi.org/10.1115/GT2015-42862
View Paper titled, Reduction of Vibration and Power Loss in Industrial Turbochargers With Improved Tilting Pad Bearing Design
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Topics: Bearing design, Turbochargers, Vibration, Bearings, Compressors, Automotive industry, Dams, Pressure, Stability, Design
Proceedings Papers

Effect of Specific Load of Bearing on the Centrifugal Compressor Rotordynamic Stability

Weimin Wang, Qihang Li, Lifang Chen, Jinji Gao, Paul Allaire
Proc. ASME. GT2015, Volume 7A: Structures and Dynamics, V07AT30A006, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42977
https://doi.org/10.1115/GT2015-42977
View Paper titled, Effect of Specific Load of Bearing on the Centrifugal Compressor Rotordynamic Stability
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Topics: Bearings, Compressors, Stability, Stress, Rotors, Clearances (Engineering), Magnetic bearings, Carbon dioxide, Damping, Deformation
Journal Articles

Control of Magnetic Bearing With Material Saturation Nonlinearity

Ali Gerami, Paul Allaire, Roger Fittro
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. June 2015, 137(6): 061002.
Paper No: DS-14-1064
https://doi.org/10.1115/1.4029125
Published Online: June 1, 2015
View Article titled, Control of Magnetic Bearing With Material Saturation Nonlinearity
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Topics: Control equipment, Design, Magnetic bearings, Modeling, Transients (Dynamics), Feedback, Optimization, Electric current, Linear matrix inequalities, Stability
Journal Articles

Design and Analysis of a Unique Energy Storage Flywheel System—An Integrated Flywheel, Motor/Generator, and Magnetic Bearing Configuration

Arunvel Kailasan, Tim Dimond, Paul Allaire, David Sheffler
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2015, 137(4): 042505.
Paper No: GTP-14-1365
https://doi.org/10.1115/1.4028575
Published Online: April 1, 2015
View Article titled, Design and Analysis of a Unique Energy Storage Flywheel System—An Integrated Flywheel, Motor/Generator, and Magnetic Bearing Configuration
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Topics: Bearings, Control equipment, Design, Energy storage, Flywheels, Magnetic bearings, Rotors, Stress, Thrust bearings, Composite materials
Proceedings Papers

Numerical Analysis of Flexible Rotor With Nonlinear Bearings and Squeeze Film Dampers

Jianming Cao, Timothy Dimond, Paul Allaire
Proc. ASME. IMECE2014, Volume 4B: Dynamics, Vibration, and Control, V04BT04A071, November 14–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-37365
https://doi.org/10.1115/IMECE2014-37365
View Paper titled, Numerical Analysis of Flexible Rotor With Nonlinear Bearings and Squeeze Film Dampers
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Topics: Bearings, Dampers, Numerical analysis, Rotors, Transient analysis, Fluid films, Compressors, Damping, Disks, Dynamic stability
Proceedings Papers

Use of the Harmonic Balance Method for Flexible Aircraft Engine Rotors With Nonlinear Squeeze Film Dampers

Feng He, Paul Allaire, Timothy Dimond
Proc. ASME. IDETC-CIE2014, Volume 8: 26th Conference on Mechanical Vibration and Noise, V008T11A071, August 17–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DETC2014-35364
https://doi.org/10.1115/DETC2014-35364
View Paper titled, Use of the Harmonic Balance Method for Flexible Aircraft Engine Rotors With Nonlinear Squeeze Film Dampers
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Topics: Aircraft engines, Dampers, Rotors, Compressors, Stiffness, Springs, Turbines, Ball bearings, Damping, Equations of motion
Proceedings Papers

Design and Analysis of a Unique Flywheel Energy Storage System: An Integrated Flywheel, Motor/Generator and Magnetic Bearing Configuration

Arunvel Kailasan, Timothy Dimond, Paul Allaire, David Sheffler
Proc. ASME. GT2014, Volume 7A: Structures and Dynamics, V07AT31A018, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26033
https://doi.org/10.1115/GT2014-26033
View Paper titled, Design and Analysis of a Unique Flywheel Energy Storage System: An Integrated Flywheel, Motor/Generator and Magnetic Bearing Configuration
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Topics: Design, Energy storage, Engines, Flywheels, Generators, Magnetic bearings, Motors, Rotors, Electronics, Kinetic energy
Proceedings Papers

Forward and Backward Mode Excitation of Flexible Rotor Supported by Tilting Pad Bearings: Numerical and Experimental Investigation

Weimin Wang, Qihang Li, Jinji Gao, Timothy Dimond, Paul Allaire
Proc. ASME. GT2014, Volume 7A: Structures and Dynamics, V07AT31A022, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26275
https://doi.org/10.1115/GT2014-26275
View Paper titled, Forward and Backward Mode Excitation of Flexible Rotor Supported by Tilting Pad Bearings: Numerical and Experimental Investigation
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Topics: Bearings, Excitation, Rotors, Machinery, Compressors, Engineering simulation, Frequency response, Simulation, Simulation results, Stability
Proceedings Papers

A Prototype Left Ventricular Assist Artificial Heart Pump: An Integrated Permanent Magnet and Active Magnetic Bearing Suspension System

Paul Allaire, Wei Jiang, Arunvel Kailasan, Timothy Dimond
Proc. ASME. GT2014, Volume 7A: Structures and Dynamics, V07AT31A015, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25957
https://doi.org/10.1115/GT2014-25957
View Paper titled, A Prototype Left Ventricular Assist Artificial Heart Pump: An Integrated Permanent Magnet and Active Magnetic Bearing Suspension System
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Topics: Artificial hearts, Engineering prototypes, Magnetic bearings, Permanent magnets, Pumps, Suspension systems, Magnetic levitation, Design, Fluids, Stress
Proceedings Papers

Coupled Lateral and Torsional Nonlinear Transient Solver With Application to Flexible Rotor-Bearing System

Jianming Cao, Tim Dimond, Paul Allaire
Proc. ASME. GT2014, Volume 7A: Structures and Dynamics, V07AT31A016, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25996
https://doi.org/10.1115/GT2014-25996
View Paper titled, Coupled Lateral and Torsional Nonlinear Transient Solver With Application to Flexible Rotor-Bearing System
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Topics: Bearings, Rotors, Transients (Dynamics), Dampers, Blades, Disks, Engines, Journal bearings, Motors, Nonlinear equations
Proceedings Papers

Rotordynamic Analysis of a Rotor-Disk System Including a Synchronously Reduced Modal Truncation Method

Timothy Dimond, Jawad Chaudhry, Matthew Wagner, Feng He, Jianming Cao, Paul Allaire
Proc. ASME. IDETC-CIE2013, Volume 8: 22nd Reliability, Stress Analysis, and Failure Prevention Conference; 25th Conference on Mechanical Vibration and Noise, V008T13A058, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-13699
https://doi.org/10.1115/DETC2013-13699
View Paper titled, Rotordynamic Analysis of a Rotor-Disk System Including a Synchronously Reduced Modal Truncation Method
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Topics: Disks, Rotors, Bearings, Mode shapes, Rotordynamics, Stability, Eigenvalues, Errors, Uncertainty
Proceedings Papers

Nonlinear Modeling of Tilting-Pad Bearings With Application to a Flexible Rotor Analysis

Jianming Cao, Tim Dimond, Paul Allaire
Proc. ASME. IDETC-CIE2013, Volume 8: 22nd Reliability, Stress Analysis, and Failure Prevention Conference; 25th Conference on Mechanical Vibration and Noise, V008T13A059, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-13712
https://doi.org/10.1115/DETC2013-13712
View Paper titled, Nonlinear Modeling of Tilting-Pad Bearings With Application to a Flexible Rotor Analysis
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Topics: Bearings, Modeling, Rotors, Transients (Dynamics), Compressors, Damping, Finite element methods, Machinery, Manufacturing, Pressure
Proceedings Papers

Steam Turbine Vibration Caused by Oil Coking Rubs: Case Studies and Numerical Simulation

Weimin Wang, Kun Feng, Tim Dimond, Paul Allaire
Proc. ASME. IDETC-CIE2013, Volume 8: 22nd Reliability, Stress Analysis, and Failure Prevention Conference; 25th Conference on Mechanical Vibration and Noise, V008T13A060, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-13713
https://doi.org/10.1115/DETC2013-13713
View Paper titled, Steam Turbine Vibration Caused by Oil Coking Rubs: Case Studies and Numerical Simulation
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Topics: Computer simulation, Steam turbines, Vibration, Rotors, Stators, Bearings, Clearances (Engineering), Compressors, Fault diagnosis, Generators
Proceedings Papers

A System Identification Method for Excitation-Frequency Dependent Rotordynamic Coefficients

Timothy W. Dimond, Amir A. Younan, Paul Allaire
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 933-943, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-69311
https://doi.org/10.1115/GT2012-69311
View Paper titled, A System Identification Method for Excitation-Frequency Dependent Rotordynamic Coefficients
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Topics: Excitation, Noise (Sound), Measurement uncertainty, Rotors, Simulation, Whirls, Bearings, Damping, Design, Excitation systems
Journal Articles

Modal Frequency Response of a Four-Pad Tilting Pad Bearing With Spherical Pivots, Finite Pivot Stiffness, and Different Pad Preloads

Timothy Dimond, Amir A. Younan, Paul Allaire, John Nicholas
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. August 2013, 135(4): 041101.
Paper No: VIB-10-1160
https://doi.org/10.1115/1.4024093
Published Online: June 6, 2013
View Article titled, Modal Frequency Response of a Four-Pad Tilting Pad Bearing With Spherical Pivots, Finite Pivot Stiffness, and Different Pad Preloads
Open the PDF for Modal Frequency Response of a Four-Pad Tilting Pad Bearing With Spherical Pivots, Finite Pivot Stiffness, and Different Pad Preloads in another window
Topics: Bearings, Stiffness, Damping, Eigenvalues