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Timothy W. Dimond
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Journal Articles

Gas-Expanded Lubricant Performance and Effects on Rotor Stability in Turbomachinery

Brian K. Weaver, Timothy W. Dimond, Jason A. Kaplan, Alexandrina Untaroiu, Andres F. Clarens
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2015, 137(7): 072601.
Paper No: GTP-14-1560
https://doi.org/10.1115/1.4028846
Published Online: July 1, 2015
View Article titled, Gas-Expanded Lubricant Performance and Effects on Rotor Stability in Turbomachinery
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Topics: Bearings, Compressors, Damping, Fluids, Lubricants, Rotors, Stability, Stiffness, Turbogenerators, Machinery
Proceedings Papers

Gas-Expanded Lubricant Performance and Effects on Rotor Stability in Turbomachinery

Brian K. Weaver, Timothy W. Dimond, Jason A. Kaplan, Alexandrina Untaroiu, Andres F. Clarens
Proc. ASME. GT2014, Volume 7A: Structures and Dynamics, V07AT31A033, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26980
https://doi.org/10.1115/GT2014-26980
View Paper titled, Gas-Expanded Lubricant Performance and Effects on Rotor Stability in Turbomachinery
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Topics: Lubricants, Rotors, Stability, Turbomachinery, Bearings, Compressors, Stiffness, Fluids, Machinery, Damping
Proceedings Papers

Time Transient Analysis of Horizontal Rigid Rotor Supported With O-Ring Sealed Squeeze Film Damper

Saeid Dousti, Timothy W. Dimond, Paul E. Allaire, Houston E. Wood
Proc. ASME. IMECE2013, Volume 4A: Dynamics, Vibration and Control, V04AT04A068, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-63907
https://doi.org/10.1115/IMECE2013-63907
View Paper titled, Time Transient Analysis of Horizontal Rigid Rotor Supported With O-Ring Sealed Squeeze Film Damper
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Topics: Dampers, Rotors, Seals, Transient analysis, Bearings, Temperature, Dimensional analysis, Elastomers, Equations of motion, Excitation
Proceedings Papers

Rotor Dynamic Modeling of Gears and Geared Systems

Jason A. Kaplan, Saeid Dousti, Paul E. Allaire, Bradley R. Nichols, Timothy W. Dimond, Alexandrina Untaroiu
Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT29A014, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94654
https://doi.org/10.1115/GT2013-94654
View Paper titled, Rotor Dynamic Modeling of Gears and Geared Systems
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Topics: Dynamic modeling, Gears, Rotors, Mechanical drives, Dynamic analysis, Resonance, Stability, Trains, Degrees of freedom, Dynamics (Mechanics)
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

The Effect of Tilting Pad Journal Bearing Dynamic Models on the Linear Stability Analysis of an 8-Stage Compressor

Timothy W. Dimond, Amir A. Younan, Paul Allaire
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. May 2012, 134(5): 052503.
https://doi.org/10.1115/1.4005208
Published Online: February 23, 2012
View Article titled, The Effect of Tilting Pad Journal Bearing Dynamic Models on the Linear Stability Analysis of an 8-Stage Compressor
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Topics: Bearings, Rotors, Stability, Compressors
Proceedings Papers

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

Timothy W. Dimond, Amir A. Younan, Paul E. Allaire, John C. Nicholas
Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 431-442, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23609
https://doi.org/10.1115/GT2010-23609
View Paper titled, Modal Frequency Response of a Four-Pad Tilting Pad Bearing With Spherical Pivots, Finite Pivot Stiffness and Different Pad Preloads
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Topics: Bearings, Frequency response, Stiffness, Damping, Cooling, Degrees of freedom, Rotors, Clearances (Engineering), Flow (Dynamics), Fluid structure interaction
Journal Articles

Comparison of Tilting-Pad Journal Bearing Dynamic Full Coefficient and Reduced Order Models Using Modal Analysis (GT2009-60269)

Timothy W. Dimond, Amir A. Younan, Paul Allaire
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. October 2010, 132(5): 051009.
https://doi.org/10.1115/1.4001507
Published Online: August 26, 2010
View Article titled, Comparison of Tilting-Pad Journal Bearing Dynamic Full Coefficient and Reduced Order Models Using Modal Analysis (GT2009-60269)
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Topics: Bearings, Damping, Degrees of freedom, Eigenvalues, Modal analysis, Rotors, Stiffness, Journal bearings
Proceedings Papers

CFD Analysis of a Canned Pump Rotor Considering an Annular Fluid With Axial Flow

Alexandrina Untaroiu, Timothy W. Dimond, Paul E. Allaire, Richard Armentrout
Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 1013-1022, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-60223
https://doi.org/10.1115/GT2009-60223
View Paper titled, CFD Analysis of a Canned Pump Rotor Considering an Annular Fluid With Axial Flow
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Topics: Axial flow, Computational fluid dynamics, Fluids, Pumps, Rotors, Fluid structure interaction, Bearings, Flow (Dynamics), Stability, Stators
Proceedings Papers

Comparison of Tilting-Pad Journal Bearing Dynamic Full Coefficient and Reduced Order Models Using Modal Analysis

Timothy W. Dimond, Amir A. Younan, Paul E. Allaire
Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 1043-1053, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-60269
https://doi.org/10.1115/GT2009-60269
View Paper titled, Comparison of Tilting-Pad Journal Bearing Dynamic Full Coefficient and Reduced Order Models Using Modal Analysis
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Topics: Journal bearings, Modal analysis, Damping, Bearings, Rotors, Stiffness, Degrees of freedom, Eigenvalues, Excitation, Dynamics (Mechanics)
Proceedings Papers

Calculation of Dynamic Coefficients for a Magnetically Levitated Artificial Heart Pump Using a CFD Approach

Alexandrina Untaroiu, Houston G. Wood, Paul E. Allaire, Timothy W. Dimond
Proc. ASME. IMECE2008, Volume 2: Biomedical and Biotechnology Engineering, 537-543, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-67802
https://doi.org/10.1115/IMECE2008-67802
View Paper titled, Calculation of Dynamic Coefficients for a Magnetically Levitated Artificial Heart Pump Using a CFD Approach
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Topics: Artificial hearts, Computational fluid dynamics, Pumps, Fluids, Impellers, Bearings, Magnetic bearings, Ventricular assist devices, Blood, Damping