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Journal Articles

Experimental Investigation of the Dynamic Loads in a Ball Bearing Turbocharger

Benjamin Conley, Farshid Sadeghi, Robert C. Griffith, Jeffrey W. McCormack
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. November 2019, 141(11): 111101.
Paper No: TRIB-19-1172
https://doi.org/10.1115/1.4044296
Published Online: August 2, 2019
View Article titled, Experimental Investigation of the Dynamic Loads in a Ball Bearing Turbocharger
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Topics: Bearings, Compressors, Sensors, Stress, Turbines, Turbochargers, Whirls, Ball bearings, Rotation, Manufacturing
Journal Articles

Effect of Oil Supply Pressure on the Force Coefficients of a Squeeze Film Damper Sealed With Piston Rings

Sung-Hwa Jeung, Luis San Andrés, Sean Den, Bonjin Koo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. June 2019, 141(6): 061701.
Paper No: TRIB-18-1406
https://doi.org/10.1115/1.4043238
Published Online: April 16, 2019
View Article titled, Effect of Oil Supply Pressure on the Force Coefficients of a Squeeze Film Damper Sealed With Piston Rings
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Topics: Dampers, Damping, Electrical conductance, Flow (Dynamics), Lubricants, Piston rings, Pressure, Whirls
Journal Articles

Numerical and Experimental Analyses of Static and Dynamic Characteristics for Partially Helically Grooved Liquid Annular Seals

Keisuke Nagai, Kazuki Koiso, Satoru Kaneko, Hiroo Taura, Yusuke Watanabe
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. February 2019, 141(2): 022201.
Paper No: TRIB-18-1108
https://doi.org/10.1115/1.4040574
Published Online: September 17, 2018
View Article titled, Numerical and Experimental Analyses of Static and Dynamic Characteristics for Partially Helically Grooved Liquid Annular Seals
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Topics: Clearances (Engineering), Damping, Experimental analysis, Fluid films, Leakage flows, Rotors, Spin (Aerodynamics), Whirls, Numerical analysis, Stators
Journal Articles

Numerical and Experimental Analyses of Dynamic Characteristics for Liquid Annular Seals With Helical Grooves in Seal Stator

K. Nagai, S. Kaneko, H. Taura, Y. Watanabe
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. September 2018, 140(5): 052201.
Paper No: TRIB-17-1167
https://doi.org/10.1115/1.4039428
Published Online: April 10, 2018
View Article titled, Numerical and Experimental Analyses of Dynamic Characteristics for Liquid Annular Seals With Helical Grooves in Seal Stator
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Topics: Fluid films, Pressure, Rotors, Spin (Aerodynamics), Spinning (Textile), Whirls, Stators, Fluids, Experimental analysis, Stiffness
Journal Articles

Nonlinear Analysis of Rotordynamic Fluid Forces in the Annular Plain Seal by Using Extended Perturbation Analysis of the Bulk-Flow Theory (Influence of Whirling Amplitude in the Case With Concentric Circular Whirl)

Atsushi Ikemoto, Tsuyoshi Inoue, Kazukiyo Sakamoto, Masaharu Uchiumi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. July 2018, 140(4): 041708.
Paper No: TRIB-17-1017
https://doi.org/10.1115/1.4039370
Published Online: April 3, 2018
View Article titled, Nonlinear Analysis of Rotordynamic Fluid Forces in the Annular Plain Seal by Using Extended Perturbation Analysis of the Bulk-Flow Theory (Influence of Whirling Amplitude in the Case With Concentric Circular Whirl)
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Topics: Flow (Dynamics), Fluids, Whirls, Boundary-value problems, Computational fluid dynamics, Pressure
Journal Articles

A Dynamic Analysis of Cage Instability in Ball Bearings

Takashi Nogi, Kazuaki Maniwa, Noriko Matsuoka
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. January 2018, 140(1): 011101.
Paper No: TRIB-17-1030
https://doi.org/10.1115/1.4036451
Published Online: July 10, 2017
View Article titled, A Dynamic Analysis of Cage Instability in Ball Bearings
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Topics: Ball bearings, Bearings, Dynamic analysis, Friction, Stress, Whirls, Traction, Clearances (Engineering)
Journal Articles

Image-Based Movement Analysis of Bearing Cages of Cylindrical Hybrid Roller Bearings

Eberhard Abele, Lars Holland
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. November 2017, 139(6): 061101.
Paper No: TRIB-16-1112
https://doi.org/10.1115/1.4036320
Published Online: June 14, 2017
View Article titled, Image-Based Movement Analysis of Bearing Cages of Cylindrical Hybrid Roller Bearings
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Topics: Bearings, Roller bearings, Whirls
Journal Articles

Image Acquisition and Image Processing Algorithms for Movement Analysis of Bearing Cages

Eberhard Abele, Lars Holland, Alexander Nehrbass
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. April 2016, 138(2): 021105.
Paper No: TRIB-15-1162
https://doi.org/10.1115/1.4031792
Published Online: November 9, 2015
View Article titled, Image Acquisition and Image Processing Algorithms for Movement Analysis of Bearing Cages
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Topics: Algorithms, Bearings, Image processing, Whirls
Journal Articles

Comparisons of Rotordynamic Characteristics Predictions for Annular Gas Seals Using the Transient Computational Fluid Dynamic Method Based on Different Single-Frequency and Multifrequency Rotor Whirling Models

Zhigang Li, Jun Li, Zhenping Feng
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. January 2016, 138(1): 011701.
Paper No: TRIB-14-1308
https://doi.org/10.1115/1.4030807
Published Online: July 23, 2015
View Article titled, Comparisons of Rotordynamic Characteristics Predictions for Annular Gas Seals Using the Transient Computational Fluid Dynamic Method Based on Different Single-Frequency and Multifrequency Rotor Whirling Models
Open the PDF for Comparisons of Rotordynamic Characteristics Predictions for Annular Gas Seals Using the Transient Computational Fluid Dynamic Method Based on Different Single-Frequency and Multifrequency Rotor Whirling Models in another window
Topics: Computational fluid dynamics, Rotors, Transients (Dynamics), Whirls
Journal Articles

Whirl and Friction Characteristics of High Speed Floating Ring and Ball Bearing Turbochargers

Matthew D. Brouwer, Farshid Sadeghi, Craig Lancaster, Jamie Archer, James Donaldson
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. October 2013, 135(4): 041102.
Paper No: TRIB-12-1168
https://doi.org/10.1115/1.4024780
Published Online: June 24, 2013
View Article titled, Whirl and Friction Characteristics of High Speed Floating Ring and Ball Bearing Turbochargers
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Topics: Ball bearings, Bearings, Rotors, Turbochargers, Whirls, Compressors, Pressure, Friction, Sensors, Top-tensioned risers
Journal Articles

Foil Bearing Design Guidelines for Improved Stability

J. Schiffmann, Z. S. Spakovszky
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. January 2013, 135(1): 011103.
Paper No: TRIB-12-1022
https://doi.org/10.1115/1.4007759
Published Online: December 20, 2012
View Article titled, Foil Bearing Design Guidelines for Improved Stability
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Topics: Bearings, Damping, Design, Foil bearings, Rotors, Stability, Stress, Whirls, Compressibility
Journal Articles

A New Approach for Including Cage Flexibility in Dynamic Bearing Models by Using Combined Explicit Finite and Discrete Element Methods

Ankur Ashtekar, Farshid Sadeghi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Elastohydrodynamic Lubrication
J. Tribol. October 2012, 134(4): 041502.
https://doi.org/10.1115/1.4007348
Published Online: September 4, 2012
View Article titled, A New Approach for Including Cage Flexibility in Dynamic Bearing Models by Using Combined Explicit Finite and Discrete Element Methods
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Topics: Bearings, Stress, Discrete element methods, Dynamics (Mechanics), Whirls, Finite element model, Deformation, Finite element analysis
Journal Articles

Catcher Bearing Life Prediction Using a Rainflow Counting Approach

Jung Gu Lee, Alan Palazzolo
Journal: Journal of Tribology
Publisher: ASME
Article Type: Applications
J. Tribol. July 2012, 134(3): 031101.
https://doi.org/10.1115/1.4006176
Published Online: June 12, 2012
View Article titled, Catcher Bearing Life Prediction Using a Rainflow Counting Approach
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Topics: Bearings, Cycles, Rotors, Shear stress, Stress, Whirls, Ball bearings, Friction, Failure, Fatigue life
Journal Articles

Stabilization of Journal Bearing Using Two-Layered Film Lubrication

T. V. V. L. N. Rao
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Briefs
J. Tribol. January 2012, 134(1): 014504.
https://doi.org/10.1115/1.4005650
Published Online: February 24, 2012
View Article titled, Stabilization of Journal Bearing Using Two-Layered Film Lubrication
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Topics: Bearings, Fluid films, Journal bearings, Viscosity, Whirls, Stiffness, Stress, Damping, Lubrication, Fluids
Journal Articles

High-Speed Operation of a Gas-Bearing Supported MEMS-Air Turbine

C. J. Teo, L. X. Liu, H. Q. Li, L. C. Ho, S. A. Jacobson, F. F. Ehrich, A. H. Epstein, Z. S. Spakovszky
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2009, 131(3): 032001.
https://doi.org/10.1115/1.3123343
Published Online: May 27, 2009
View Article titled, High-Speed Operation of a Gas-Bearing Supported MEMS-Air Turbine
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Topics: Bearings, Journal bearings, Rotors, Turbines, Gas bearings, Anisotropy, Flow (Dynamics), Microelectromechanical systems, Whirls, Thrust bearings
Journal Articles

A Discrete Element Approach for Modeling Cage Flexibility in Ball Bearing Dynamics Simulations

Nick Weinzapfel, Farshid Sadeghi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2009, 131(2): 021102.
https://doi.org/10.1115/1.3063817
Published Online: March 3, 2009
View Article titled, A Discrete Element Approach for Modeling Cage Flexibility in Ball Bearing Dynamics Simulations
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Topics: Ball bearings, Bearings, Deformation, Dynamics (Mechanics), Equations of motion, Fibers, Manufacturing, Simulation, Modeling, Steady state
Journal Articles

High-Speed Rotor With Air Bearings Mounted on Flexible Supports: Test Bench and Experimental Results

G. Belforte, F. Colombo, T. Raparelli, V. Viktorov
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2008, 130(2): 021103.
https://doi.org/10.1115/1.2908905
Published Online: April 25, 2008
View Article titled, High-Speed Rotor With Air Bearings Mounted on Flexible Supports: Test Bench and Experimental Results
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Topics: Bearings, Bushings, Damping, Pressure, Rotors, Seals, Stability, Whirls, Turbines, Air bearings
Journal Articles

Unsteady Flow and Dynamic Behavior of Ultrashort Lomakin Gas Bearings

C. J. Teo, Z. S. Spakovszky, S. A. Jacobson
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 2008, 130(1): 011001.
https://doi.org/10.1115/1.2805403
Published Online: December 6, 2007
View Article titled, Unsteady Flow and Dynamic Behavior of Ultrashort Lomakin Gas Bearings
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Topics: Flow (Dynamics), Hydrostatics, Journal bearings, Whirls, Bearings, Stability, Computational fluid dynamics, Unsteady flow
Journal Articles

Rotordynamics of Small Turbochargers Supported on Floating Ring Bearings—Highlights in Bearing Analysis and Experimental Validation

Luis San Andres, Juan Carlos Rivadeneira, Kostandin Gjika, Christopher Groves, Gerry LaRue
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2007, 129(2): 391–397.
https://doi.org/10.1115/1.2464134
Published Online: November 13, 2006
View Article titled, Rotordynamics of Small Turbochargers Supported on Floating Ring Bearings—Highlights in Bearing Analysis and Experimental Validation
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Topics: Bearings, Compressors, Lubricants, Rotors, Temperature, Turbochargers, Rotordynamics, Pressure, Whirls
Journal Articles

Stability-Optimized Clearance Configuration of Fluid-Film Bearings

Koichi Matsuda, Shinya Kijimoto, Yoichi Kanemitsu
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2007, 129(1): 106–111.
https://doi.org/10.1115/1.2401213
Published Online: August 14, 2006
View Article titled, Stability-Optimized Clearance Configuration of Fluid-Film Bearings
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Topics: Bearings, Clearances (Engineering), Fluid films, Optimization, Stability, Journal bearings, Fourier series, Whirls, Rotors