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Journal Articles

Dynamic Force and Moment Characteristics of Annular Gaps—Simulation Results and Evaluation of the Relevance of the Tilt and Moment Coefficients

Maximilian M. G. Kuhr, Rainer Nordmann, Peter F. Pelz
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 2023, 145(1): 011801.
Paper No: TRIB-22-1005
https://doi.org/10.1115/1.4055180
Published Online: October 7, 2022
View Article titled, Dynamic Force and Moment Characteristics of Annular Gaps—Simulation Results and Evaluation of the Relevance of the Tilt and Moment Coefficients
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Topics: Annulus, Damping, Excitation, Flow (Dynamics), Fluid films, Inertia (Mechanics), Reynolds number, Stiffness, Rotation
Journal Articles

Computational Fluid Dynamics Analysis of the Influence of Gas Content on the Rotordynamic Force Coefficients for a Circumferentially Grooved Annular Seal for Multiple Phase Pumps

Tingcheng Wu, Luis San Andrés, Xueliang Lu
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2022, 144(11): 111803.
Paper No: TRIB-21-1495
https://doi.org/10.1115/1.4054757
Published Online: June 23, 2022
View Article titled, Computational Fluid Dynamics Analysis of the Influence of Gas Content on the Rotordynamic Force Coefficients for a Circumferentially Grooved Annular Seal for Multiple Phase Pumps
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Topics: Computational fluid dynamics, Pressure, Excitation, Flow (Dynamics), Two-phase flow
Journal Articles

Behaviors of a Hole-Pattern Seal With Wet-Gas

Min Zhang, Dara W. Childs
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. December 2021, 143(12): 121807.
Paper No: TRIB-21-1156
https://doi.org/10.1115/1.4052254
Published Online: September 15, 2021
View Article titled, Behaviors of a Hole-Pattern Seal With Wet-Gas
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Topics: Air flow, Compressors, Damping, Design, Flow (Dynamics), Leakage, Rotors, Stability, Excitation, Stiffness
Journal Articles

Investigation of Structural Conformity in a Three-Pad Adaptive Air Foil Bearing With Regard to Active Control of Radial Clearance

Hossein Sadri, Henning Schlums, Michael Sinapius
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. August 2019, 141(8): 081701.
Paper No: TRIB-18-1296
https://doi.org/10.1115/1.4043780
Published Online: June 4, 2019
View Article titled, Investigation of Structural Conformity in a Three-Pad Adaptive Air Foil Bearing With Regard to Active Control of Radial Clearance
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Topics: Bearings, Clearances (Engineering), Foil bearings, Shapes, Shells, Stiffness, Stress, Damping, Degrees of freedom, Film thickness
Journal Articles

Dynamic Force Coefficients of Hydrostatic Gas Films for Recessed Flat Plates: Experimental Identification and Numerical Predictions

Adolfo Delgado, Bugra Ertas
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. November 2018, 140(6): 061703.
Paper No: TRIB-17-1305
https://doi.org/10.1115/1.4040114
Published Online: May 21, 2018
View Article titled, Dynamic Force Coefficients of Hydrostatic Gas Films for Recessed Flat Plates: Experimental Identification and Numerical Predictions
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Topics: Damping, Excitation, Film thickness, Flat plates, Flow (Dynamics), Hydrostatics, Pressure, Stiffness, Bearings, Leakage
Journal Articles

The Varying Compliance Resonance in a Ball Bearing Rotor System Affected by Different Ball Numbers and Rotor Eccentricities

Rui Yang, Lei Hou, Yulin Jin, Yushu Chen, Zhiyong Zhang
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. September 2018, 140(5): 051101.
Paper No: TRIB-17-1288
https://doi.org/10.1115/1.4039566
Published Online: April 30, 2018
View Article titled, The Varying Compliance Resonance in a Ball Bearing Rotor System Affected by Different Ball Numbers and Rotor Eccentricities
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Topics: Ball bearings, Bearings, Resonance, Rotors, Excitation, Vibration
Journal Articles

Experimental Investigation of the Time Delay Between a Varying Applied Normal Force and the Resulting Friction Force

Guangxiong Chen, Xiaolu Cui
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. September 2017, 139(5): 051607.
Paper No: TRIB-16-1187
https://doi.org/10.1115/1.4036168
Published Online: May 26, 2017
View Article titled, Experimental Investigation of the Time Delay Between a Varying Applied Normal Force and the Resulting Friction Force
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Topics: Calibration, Delays, Excitation, Friction, Force measurement
Journal Articles

A Neural Network Identification Technique for a Foil-Air Bearing Under Variable Speed Conditions and Its Application to Unbalance Response Analysis

Mohd Firdaus Bin Hassan, Philip Bonello
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. March 2017, 139(2): 021501.
Paper No: TRIB-15-1328
https://doi.org/10.1115/1.4033455
Published Online: August 11, 2016
View Article titled, A Neural Network Identification Technique for a Foil-Air Bearing Under Variable Speed Conditions and Its Application to Unbalance Response Analysis
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Topics: Bearings, Excitation, Rotors, Artificial neural networks, Foil bearings, Displacement
Journal Articles

Experimental Evaluation of the Structure Characterization of a Novel Hybrid Bump-Metal Mesh Foil Bearing

Kai Feng, Yuman Liu, Xueyuan Zhao, Wanhui Liu
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. April 2016, 138(2): 021702.
Paper No: TRIB-15-1108
https://doi.org/10.1115/1.4031496
Published Online: October 15, 2015
View Article titled, Experimental Evaluation of the Structure Characterization of a Novel Hybrid Bump-Metal Mesh Foil Bearing
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Topics: Bearings, Damping, Density, Excitation, Metals, Stiffness, Stress, Foil bearings
Journal Articles

Multi-Event Excitation Force Model for Inner Race Defect in a Rolling Element Bearing

Sidra Khanam, N. Tandon, J. K. Dutt
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. January 2016, 138(1): 011106.
Paper No: TRIB-14-1276
https://doi.org/10.1115/1.4031394
Published Online: October 1, 2015
View Article titled, Multi-Event Excitation Force Model for Inner Race Defect in a Rolling Element Bearing
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Topics: Bearings, Excitation, Stress, Vibration, Rolling bearings
Journal Articles

Experimental Analysis of the Dynamic Characteristics of a Foil Thrust Bearing

Franck Balducchi, Mihai Arghir, Romain Gauthier
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. April 2015, 137(2): 021703.
Paper No: TRIB-14-1206
https://doi.org/10.1115/1.4029643
Published Online: April 1, 2015
View Article titled, Experimental Analysis of the Dynamic Characteristics of a Foil Thrust Bearing
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Topics: Damping, Excitation, Experimental analysis, Stiffness, Stress, Thrust bearings, Rotation
Journal Articles

Phase Change and Choked Flow Effects on Rotordynamic Coefficients of Cryogenic Annular Seals

Mohamed Amine Hassini, Mihai Arghir
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. October 2013, 135(4): 042201.
Paper No: TRIB-12-1140
https://doi.org/10.1115/1.4024376
Published Online: June 18, 2013
View Article titled, Phase Change and Choked Flow Effects on Rotordynamic Coefficients of Cryogenic Annular Seals
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Topics: Flow (Dynamics), Excitation
Journal Articles

A Simplified Nonlinear Transient Analysis Method for Gas Bearings

M. Amine Hassini, Mihai Arghir
Journal: Journal of Tribology
Publisher: ASME
Article Type: Hydrodynamic Lubrication
J. Tribol. January 2012, 134(1): 011704.
https://doi.org/10.1115/1.4005772
Published Online: February 24, 2012
View Article titled, A Simplified Nonlinear Transient Analysis Method for Gas Bearings
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Topics: Bearings, Equilibrium (Physics), Excitation, Fluids, Gas bearings, Laplace transforms, Poles (Building), Rotors, Transfer functions, Transient analysis
Journal Articles

Thermal Fly-Height Control Slider Instability and Dynamics at Touchdown: Explanations Using Nonlinear Systems Theory

Sripathi Vangipuram Canchi, David B. Bogy
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2011, 133(2): 021902.
https://doi.org/10.1115/1.4003483
Published Online: March 21, 2011
View Article titled, Thermal Fly-Height Control Slider Instability and Dynamics at Touchdown: Explanations Using Nonlinear Systems Theory
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Topics: Dynamics (Mechanics), Resonance, Vibration, Disks, Frequency response, Excitation, Nonlinear systems
Journal Articles

Identification of Force Coefficients in a Squeeze Film Damper With a Mechanical Seal: Large Contact Force

Adolfo Delgado, Luis San Andrés
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2010, 132(3): 032201.
https://doi.org/10.1115/1.4001458
Published Online: June 15, 2010
View Article titled, Identification of Force Coefficients in a Squeeze Film Damper With a Mechanical Seal: Large Contact Force
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Topics: Bearings, Dampers, Damping, Dry friction, Stress, Excitation, Inertia (Mechanics), Lubricants, Rotors, Vibration
Journal Articles

Effect of Thread and Bearing Friction Coefficients on the Self-Loosening of Preloaded Countersunk-Head Bolts Under Periodic Transverse Excitation

Amro M. Zaki, Sayed A. Nassar, Xianjie Yang
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2010, 132(3): 031601.
https://doi.org/10.1115/1.4001621
Published Online: June 4, 2010
View Article titled, Effect of Thread and Bearing Friction Coefficients on the Self-Loosening of Preloaded Countersunk-Head Bolts Under Periodic Transverse Excitation
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Topics: Bearings, Excitation, Fasteners, Friction, Thread, Torque
Journal Articles

Characterization of a Foil Bearing Structure at Increasing Temperatures: Static Load and Dynamic Force Performance

Tae Ho Kim, Anthony W. Breedlove, Luis San Andrés
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2009, 131(4): 041703.
https://doi.org/10.1115/1.3195042
Published Online: September 22, 2009
View Article titled, Characterization of a Foil Bearing Structure at Increasing Temperatures: Static Load and Dynamic Force Performance
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Topics: Bearings, Stiffness, Stress, Temperature, Excitation, Dry friction, Foil bearings, Damping
Journal Articles

Theoretical and Experimental Study on Dynamic Coefficients and Stability for a Hydrostatic/Hydrodynamic Conical Bearing

Guo Hong, Lai Xinmin, Cen Shaoqi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2009, 131(4): 041701.
https://doi.org/10.1115/1.3176991
Published Online: September 21, 2009
View Article titled, Theoretical and Experimental Study on Dynamic Coefficients and Stability for a Hydrostatic/Hydrodynamic Conical Bearing
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Topics: Bearings, Hydrostatics, Stability, Excitation, Fluid films, Flow (Dynamics), Stiffness
Journal Articles

Identification of Force Coefficients in a Squeeze Film Damper With a Mechanical End Seal—Centered Circular Orbit Tests

Luis San Andrés, Adolfo Delgado
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2007, 129(3): 660–668.
https://doi.org/10.1115/1.2736708
Published Online: February 8, 2007
View Article titled, Identification of Force Coefficients in a Squeeze Film Damper With a Mechanical End Seal—Centered Circular Orbit Tests
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Topics: Dampers, Damping, Dry friction, Lubricants, Stress, Inertia (Mechanics), Excitation
Journal Articles

Rotordynamic Force Coefficients for a New Damper Seal Design

Bugra H. Ertas, John M. Vance
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2007, 129(2): 365–374.
https://doi.org/10.1115/1.2464138
Published Online: November 3, 2006
View Article titled, Rotordynamic Force Coefficients for a New Damper Seal Design
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Topics: Cavities, Dampers, Damping, Design, Pressure, Rotors, Stiffness, Bearings, Mechanical impedance, Excitation