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Proceedings Papers

Interaction Dynamics Between a Flexible Rotor and an Auxiliary Clearance Bearing

James L. Lawen, Jr., George T. Flowers
Proc. ASME. IMECE96, Elasto-Impact and Friction in Dynamic Systems, 119-126, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0022
https://doi.org/10.1115/IMECE1996-0022
View Paper titled, Interaction Dynamics Between a Flexible Rotor and an Auxiliary Clearance Bearing
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Topics: Bearings, Clearances (Engineering), Dynamics (Mechanics), Rotors, Design, Simulation, Simulation results, Vibration
Proceedings Papers

Manufacture of Multi-Direction Composites (MDC) Flywheels

Faissal Abdel-Hady, Yasser Gowayed, George T. Flowers
Proc. ASME. IMECE2000, Aerospace, 15-19, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-2150
https://doi.org/10.1115/IMECE2000-2150
View Paper titled, Manufacture of Multi-Direction Composites (MDC) Flywheels
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Topics: Composite materials, Flywheels, Machinery, Design, Manufacturing, Winding (process)
Proceedings Papers

A Transfer Matrix Technique for Evaluating the Natural Frequencies and Critical Speeds of a Rotor With Multiple Flexible Disks

Fangsheng Wu, George T. Flowers
Proc. ASME. DETC91, 13th Biennial Conference on Mechanical Vibration and Noise: Rotating Machinery and Vehicle Dynamics, 353, September 22–25, 1991
Publisher: American Society of Mechanical Engineers
Paper No: DETC1991-0268
https://doi.org/10.1115/DETC1991-0268
View Paper titled, A Transfer Matrix Technique for Evaluating the Natural Frequencies and Critical Speeds of a Rotor With Multiple Flexible Disks
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Topics: Disks, Rotors, Partial differential equations, Engines, Space vehicles, Turbomachinery, Vibration, Design, Discrete systems, Electricity (Physics)
Proceedings Papers

Modelling of an Elastic Disk With Finite Hub Motions and Small Elastic Vibrations With Application to Rotordynamics

George T. Flowers
Proc. ASME. DETC91, 13th Biennial Conference on Mechanical Vibration and Noise: Rotating Machinery and Vehicle Dynamics, 115-125, September 22–25, 1991
Publisher: American Society of Mechanical Engineers
Paper No: DETC1991-0236
https://doi.org/10.1115/DETC1991-0236
View Paper titled, Modelling of an Elastic Disk With Finite Hub Motions and Small Elastic Vibrations With Application to Rotordynamics
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Topics: Disks, Modeling, Rotordynamics, Vibration, Displacement, Degrees of freedom, Flexible structures, Mode shapes, Particle spin, Rotation
Proceedings Papers

An Experimental Study of the Influence of Disk Flexibility and Rubbing on Rotordynamics

Fangsheng Wu, George T. Flowers
Proc. ASME. DETC93, 14th Biennial Conference on Mechanical Vibration and Noise: Vibration of Rotating Systems, 19-26, September 19–22, 1993
Publisher: American Society of Mechanical Engineers
Paper No: DETC1993-0178
https://doi.org/10.1115/DETC1993-0178
View Paper titled, An Experimental Study of the Influence of Disk Flexibility and Rubbing on Rotordynamics
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Topics: Disks, Rotordynamics, Rotors, Equations of motion, Whirls
Proceedings Papers

A Study of the Nonlinear Dynamics of a Flap-Lag Rotor Model in Forward Flight

Michele M. Putko, George T. Flowers
Proc. ASME. DETC93, 14th Biennial Conference on Mechanical Vibration and Noise: Dynamics and Vibration of Time-Varying Systems and Structures, 159-165, September 19–22, 1993
Publisher: American Society of Mechanical Engineers
Paper No: DETC1993-0102
https://doi.org/10.1115/DETC1993-0102
View Paper titled, A Study of the Nonlinear Dynamics of a Flap-Lag Rotor Model in Forward Flight
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Topics: Flight, Nonlinear dynamics, Rotors, Blades, Dynamics (Mechanics), Equilibrium (Physics), Fourier series, Hinges, Modeling, Simulation
Proceedings Papers

Dynamic Modelling and Response Characteristics of a Magnetic Bearing Rotor System With Auxiliary Bearings

April M. Free, George T. Flowers, Victor S. Trent
Proc. ASME. DETC95, Volume 3B: 15th Biennial Conference on Mechanical Vibration and Noise — Acoustics, Vibrations, and Rotating Machines, 1103-1110, September 17–20, 1995
Publisher: American Society of Mechanical Engineers
Paper No: DETC1995-0505
https://doi.org/10.1115/DETC1995-0505
View Paper titled, Dynamic Modelling and Response Characteristics of a Magnetic Bearing Rotor System With Auxiliary Bearings
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Topics: Bearings, Dynamic modeling, Magnetic bearings, Rotors, Bushings, Clearances (Engineering), Dynamics (Mechanics), Failure, Iron, Rolling bearings
Proceedings Papers

Stability Analysis of Rotordynamic Systems Using Floquet Methods

Dan B. Marghitu, George T. Flowers, György Szász
Proc. ASME. DETC97, Volume 1C: 16th Biennial Conference on Mechanical Vibration and Noise, V01CT15A009, September 14–17, 1997
Publisher: American Society of Mechanical Engineers
Paper No: DETC97/VIB-3909
https://doi.org/10.1115/DETC97/VIB-3909
View Paper titled, Stability Analysis of Rotordynamic Systems Using Floquet Methods
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Topics: Stability, Bearings, Clearances (Engineering), Dynamic models, Dynamics (Mechanics), Oscillations, Poincaré maps, Rotors, Simulation, Vibration
Proceedings Papers

3D Printed MEMS-Scale Vibration Isolators

Arthur Bond, Brent D. Bottenfield, Robert N. Dean, Mark L. Adams, Jing Zhao, XiaoFu Li, George T. Flowers, Edmon Perkins
Proc. ASME. IMECE2020, Volume 7A: Dynamics, Vibration, and Control, V07AT07A024, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-24357
https://doi.org/10.1115/IMECE2020-24357
View Paper titled, 3D Printed MEMS-Scale Vibration Isolators
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Topics: Additive manufacturing, Microelectromechanical systems, Vibration isolators
Proceedings Papers

Time Varying Control of a Bladed Disk Assembly Using Shaft Based Actuation

György Szász, George T. Flowers
Proc. ASME. DETC99, Volume 7B: 17th Biennial Conference on Mechanical Vibration and Noise, 2505-2513, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8317
https://doi.org/10.1115/DETC99/VIB-8317
View Paper titled, Time Varying Control of a Bladed Disk Assembly Using Shaft Based Actuation
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Topics: Disks, Manufacturing, Vibration, Thrust bearings, Actuators, Control equipment, Dynamics (Mechanics), Engineering design processes, Magnetic bearings, Simulation results
Proceedings Papers

Design and Testing of a Permanent Magnet Biased Active Magnetic Bearing

Ross W. Overstreet, George T. Flowers, Gyorgy Szasz
Proc. ASME. DETC99, Volume 7A: 17th Biennial Conference on Mechanical Vibration and Noise, 1117-1124, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8282
https://doi.org/10.1115/DETC99/VIB-8282
View Paper titled, Design and Testing of a Permanent Magnet Biased Active Magnetic Bearing
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Topics: Design, Magnetic bearings, Permanent magnets, Testing, Electric current, Energy dissipation, Flow (Dynamics), Innovation, Leakage, Rotors
Proceedings Papers

Characterization of Transient Effects in Rotordynamic Vibrations Using Harmonic Wavelets

Valeta Carol Chancey, George T. Flowers
Proc. ASME. DETC99, Volume 7A: 17th Biennial Conference on Mechanical Vibration and Noise, 1343-1354, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8311
https://doi.org/10.1115/DETC99/VIB-8311
View Paper titled, Characterization of Transient Effects in Rotordynamic Vibrations Using Harmonic Wavelets
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Topics: Transients (Dynamics), Vibration, Wavelets, Steady state, Journal bearings, Machinery, Vibration analysis, Whirls
Proceedings Papers

Influence of Seal Geometry on the Rotordynamic Characteristics of a Round-Hole Pattern Damping Seal

J. Mark Darden, Eric M. Earhart, George T. Flowers
Proc. ASME. IDETC-CIE2001, Volume 6C: 18th Biennial Conference on Mechanical Vibration and Noise, 2835-2841, September 9–12, 2001
Publisher: American Society of Mechanical Engineers
Paper No: DETC2001/VIB-21635
https://doi.org/10.1115/DETC2001/VIB-21635
View Paper titled, Influence of Seal Geometry on the Rotordynamic Characteristics of a Round-Hole Pattern Damping Seal
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Topics: Damping, Geometry, Stiffness, Clearances (Engineering), Design, Stability, Engineers, Fluids, Machinery, Pressure
Proceedings Papers

Development of a Set of Equations for Incorporating Disk Flexibility Effects in Rotordynamical Analyses

George T. Flowers, Stephen G. Ryan
Proc. ASME. GT1991, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, V005T14A008, June 3–6, 1991
Publisher: American Society of Mechanical Engineers
Paper No: 91-GT-075
https://doi.org/10.1115/91-GT-075
View Paper titled, Development of a Set of Equations for Incorporating Disk Flexibility Effects in Rotordynamical Analyses
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Topics: Disks, Rotors, Engineering simulation, Equations of motion, Simulation, Vibration
Proceedings Papers

A Study of the Influence of Bearing Clearance on Lateral Coupled Shaft/Disk Rotordynamics

George T. Flowers, Fang Sheng Wu
Proc. ASME. GT1992, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V005T14A029, June 1–4, 1992
Publisher: American Society of Mechanical Engineers
Paper No: 92-GT-177
https://doi.org/10.1115/92-GT-177
View Paper titled, A Study of the Influence of Bearing Clearance on Lateral Coupled Shaft/Disk Rotordynamics
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Topics: Bearings, Clearances (Engineering), Disks, Rotordynamics, Vibration, Dynamics (Mechanics), Blades, Computer simulation, Failure, Limit cycles
Proceedings Papers

A Study of the Influence of Rubbing on the Dynamics of a Flexible Disk Rotor System

Fangsheng Wu, George T. Flowers
Proc. ASME. GT1993, Volume 2: Combustion and Fuels; Oil and Gas Applications; Cycle Innovations; Heat Transfer; Electric Power; Industrial and Cogeneration; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; IGTI Scholar Award, V002T12A009, May 24–27, 1993
Publisher: American Society of Mechanical Engineers
Paper No: 93-GT-035
https://doi.org/10.1115/93-GT-035
View Paper titled, A Study of the Influence of Rubbing on the Dynamics of a Flexible Disk Rotor System
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Topics: Disks, Dynamics (Mechanics), Rotors, Stability, Rotor vibration, Steady state, Whirls
Proceedings Papers

Synchronous Dynamics of a Coupled Shaft/Bearing/Housing System With Auxiliary Support From a Clearance Bearing: Analysis and Experiment

James L. Lawen, Jr., George T. Flowers
Proc. ASME. GT1995, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V005T14A016, June 5–8, 1995
Publisher: American Society of Mechanical Engineers
Paper No: 95-GT-216
https://doi.org/10.1115/95-GT-216
View Paper titled, Synchronous Dynamics of a Coupled Shaft/Bearing/Housing System With Auxiliary Support From a Clearance Bearing: Analysis and Experiment
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Topics: Bearings, Clearances (Engineering), Dynamics (Mechanics), Vibration, Rotors, Design, Magnetic bearings, Simulation, Simulation models, Stress
Proceedings Papers

A Study of Integrally Augmented State Feedback Control for an Active Magnetic Bearing Supported Rotor System

George T. Flowers, Gyorgy Szasz, Victor S. Trent, Michael E. Greene
Proc. ASME. GT1997, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T14A041, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-231
https://doi.org/10.1115/97-GT-231
View Paper titled, A Study of Integrally Augmented State Feedback Control for an Active Magnetic Bearing Supported Rotor System
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Topics: Magnetic bearings, Rotors, State feedback, Control equipment, Feedback, Pole placement
Proceedings Papers

Experimental Rotordynamic Characterization of Annular Seals: Facility and Methodology

J. Mark Darden, Eric M. Earhart, George T. Flowers
Proc. ASME. GT1998, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V005T14A006, June 2–5, 1998
Publisher: American Society of Mechanical Engineers
Paper No: 98-GT-017
https://doi.org/10.1115/98-GT-017
View Paper titled, Experimental Rotordynamic Characterization of Annular Seals: Facility and Methodology
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Topics: Damping, Flow (Dynamics), Horsepower, Machinery, Reynolds number, Space flight, Stability, Steam turbines, Stiffness, Testing
Proceedings Papers

Comparison of the Dynamic Characteristics of Smooth Annular Seals and Damping Seals

J. Mark Darden, Eric M. Earhart, George T. Flowers
Proc. ASME. GT1999, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, V004T03A016, June 7–10, 1999
Publisher: American Society of Mechanical Engineers
Paper No: 99-GT-177
https://doi.org/10.1115/99-GT-177
View Paper titled, Comparison of the Dynamic Characteristics of Smooth Annular Seals and Damping Seals
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Topics: Damping, Fluids, Stability, Machinery, Pressure, Rocket engines, Space flight, Stators, Testing, Turbomachinery