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Journal Articles

An Integrated Finite Element and adams Modeling Approach for Analyzing Rotor-Bearing Housing Systems

Abbas Shafiee, Farshid Sadeghi, Matthew G. Wilmer
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 2025, 147(1): 014303.
Paper No: TRIB-24-1126
https://doi.org/10.1115/1.4066205
Published Online: September 11, 2024
View Article titled, An Integrated Finite Element and adams Modeling Approach for Analyzing Rotor-Bearing Housing Systems
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Topics: Bearings, Rotors
Journal Articles

A Review of Computational Fluid Dynamics Approaches Used to Investigate Lubrication of Rolling Element Bearings

Farshid Sadeghi, Ujjawal Arya, Saeed Aamer, Andreas Meinel
Journal: Journal of Tribology
Publisher: ASME
Article Type: Review Articles
J. Tribol. October 2024, 146(10): 100801.
Paper No: TRIB-24-1123
https://doi.org/10.1115/1.4065663
Published Online: July 4, 2024
View Article titled, A Review of Computational Fluid Dynamics Approaches Used to Investigate Lubrication of Rolling Element Bearings
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Topics: Bearings, Computational fluid dynamics, Flow (Dynamics), Lubricants, Lubrication, Modeling
Journal Articles

The Influence of Cage Pocket Lubrication on the Simulation of Deep Groove Ball Bearing Cage Motion

Thomas Russell, Farshid Sadeghi, Young Sup Kang, Isidoro Mazzitelli
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. February 2024, 146(2): 022201.
Paper No: TRIB-23-1229
https://doi.org/10.1115/1.4063624
Published Online: October 26, 2023
View Article titled, The Influence of Cage Pocket Lubrication on the Simulation of Deep Groove Ball Bearing Cage Motion
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Topics: Bearings, Lubrication, Simulation, Friction
Journal Articles

Special Issue on Tribo-Informatics: Toward High-Efficiency Tribology Research

Yi Zhu, Zhinan Zhang, Farshid Sadeghi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Guest Editorial
J. Tribol. September 2023, 145(9): 090301.
Paper No: TRIB-23-1201
https://doi.org/10.1115/1.4062876
Published Online: July 19, 2023
View Article titled, Special Issue on Tribo-Informatics: Toward High-Efficiency Tribology Research
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Topics: Tribology
Journal Articles

Investigation of Roller Bearing Cage Pocket Lubrication and Friction

Wyatt Peterson, Farshid Sadeghi, Andreas Meinel, Hannes Grillenberger
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. May 2023, 145(5): 054302.
Paper No: TRIB-22-1332
https://doi.org/10.1115/1.4056649
Published Online: January 31, 2023
View Article titled, Investigation of Roller Bearing Cage Pocket Lubrication and Friction
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Topics: Bearings, Clearances (Engineering), Friction, Lubrication, Roller bearings, Rollers, Torque, Stress
Journal Articles

Optical Measurement of Roller Slip, Tilt, and Skew in a Spherical Roller Bearing

Abbas Shafiee, Thomas Russell, Steven J. Lorenz, Farshid Sadeghi, Matthew G. Wilmer
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2023, 145(4): 044302.
Paper No: TRIB-22-1275
https://doi.org/10.1115/1.4056363
Published Online: December 26, 2022
View Article titled, Optical Measurement of Roller Slip, Tilt, and Skew in a Spherical Roller Bearing
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Topics: Rollers, Stress, Bearings, Roller bearings
Journal Articles

Fluid–Solid Interaction Modeling of Elastohydrodynamic Lubrication Point Contacts

Wyatt Peterson, Kushagra Singh, Farshid Sadeghi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2022, 144(11): 111601.
Paper No: TRIB-22-1061
https://doi.org/10.1115/1.4054589
Published Online: June 23, 2022
View Article titled, Fluid–Solid Interaction Modeling of Elastohydrodynamic Lubrication Point Contacts
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Topics: Computational fluid dynamics, Fluid structure interaction, Fluids, Modeling, Pressure, Stress, Film thickness, Elastohydrodynamic lubrication, Cavitation, Temperature effects
Journal Articles

Analytical Investigation of Roller Skew and Tilt in a Spherical Roller Bearing

Abbas Shafiee, Thomas Russell, Farshid Sadeghi, Matthew G. Wilmer
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071201.
Paper No: TRIB-21-1467
https://doi.org/10.1115/1.4053354
Published Online: January 18, 2022
View Article titled, Analytical Investigation of Roller Skew and Tilt in a Spherical Roller Bearing
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Topics: Rollers, Stress, Bearings, Roller bearings
Journal Articles

Effects of Grain Refinement on Rolling Contact Fatigue in Bearing Contacts

Steven J. Lorenz, Farshid Sadeghi, Hitesh K. Trivedi, Mathew S. Kirsch, Chinpei Wang
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. December 2021, 143(12): 121201.
Paper No: TRIB-21-1207
https://doi.org/10.1115/1.4052279
Published Online: September 15, 2021
View Article titled, Effects of Grain Refinement on Rolling Contact Fatigue in Bearing Contacts
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Topics: Bearings, Damage mechanics, Fatigue, Fatigue life, Grain size, Pressure, Rolling contact, Stress, Cycles, Simulation
Journal Articles

A Three-Dimensional Finite Element Damage Mechanics Model to Simulate Fretting Wear of Hertzian Line and Circular Contacts in Partial Slip Regime

Arman Ahmadi, Farshid Sadeghi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. May 2022, 144(5): 051602.
Paper No: TRIB-21-1253
https://doi.org/10.1115/1.4051814
Published Online: August 3, 2021
View Article titled, A Three-Dimensional Finite Element Damage Mechanics Model to Simulate Fretting Wear of Hertzian Line and Circular Contacts in Partial Slip Regime
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Topics: Wear
Proceedings Papers

Stability of Sliding in a System Excited by a Rough Moving Surface

Edward J. Berger, Charles M. Krousgrill, Farshid Sadeghi
Proc. ASME. DETC95, Volume 3A: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration of Nonlinear, Random, and Time-Varying Systems, 553-563, September 17–20, 1995
Publisher: American Society of Mechanical Engineers
Paper No: DETC1995-0296
https://doi.org/10.1115/DETC1995-0296
View Paper titled, Stability of Sliding in a System Excited by a Rough Moving Surface
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Topics: Stability, Surface roughness, Resonance, Friction, Damping, Oscillations
Journal Articles

Fluid–Structure Interaction Modeling of Elastohydrodynamically Lubricated Line Contacts

Kushagra Singh, Farshid Sadeghi, Thomas Russell, Steven J. Lorenz, Wyatt Peterson, Jaret Villarreal, Takumi Jinmon
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. September 2021, 143(9): 091602.
Paper No: TRIB-20-1440
https://doi.org/10.1115/1.4049260
Published Online: January 8, 2021
View Article titled, Fluid–Structure Interaction Modeling of Elastohydrodynamically Lubricated Line Contacts
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Topics: Fluid structure interaction, Pressure, Stress, Fluids, Modeling
Journal Articles

A Novel Three-Dimensional Finite Element Model to Simulate Third Body Effects on Fretting Wear of Hertzian Point Contact in Partial Slip

Arman Ahmadi, Farshid Sadeghi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2021, 143(4): 041502.
Paper No: TRIB-20-1280
https://doi.org/10.1115/1.4048386
Published Online: September 28, 2020
View Article titled, A Novel Three-Dimensional Finite Element Model to Simulate Third Body Effects on Fretting Wear of Hertzian Point Contact in Partial Slip
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Topics: Particulate matter, Pressure, Stress, Wear, Materials properties, Finite element model, Deformation
Journal Articles

A Strongly Coupled Finite Difference Method–Finite Element Method Model for Two-Dimensional Elastohydrodynamically Lubricated Contact

Wyatt Peterson, Thomas Russell, Farshid Sadeghi, Michael Tekletsion Berhan
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. May 2020, 142(5): 051601.
Paper No: TRIB-19-1311
https://doi.org/10.1115/1.4045816
Published Online: February 19, 2020
View Article titled, A Strongly Coupled Finite Difference Method–Finite Element Method Model for Two-Dimensional Elastohydrodynamically Lubricated Contact
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Topics: Damage, Film thickness, Fluids, Lubrication, Pressure, Stress, Fluid structure interaction
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

A Coupled Multibody Finite Element Model for Investigating Effects of Surface Defects on Rolling Contact Fatigue

Zamzam Golmohammadi, Farshid Sadeghi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. April 2019, 141(4): 041402.
Paper No: TRIB-18-1299
https://doi.org/10.1115/1.4042270
Published Online: January 22, 2019
View Article titled, A Coupled Multibody Finite Element Model for Investigating Effects of Surface Defects on Rolling Contact Fatigue
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Topics: Cycles, Damage, Damage mechanics, Fatigue, Fatigue life, Finite element model, Pressure, Rolling contact, Stress, Finite element analysis
Journal Articles

Effect of Residual Stresses on Microstructural Evolution Due to Rolling Contact Fatigue

Dallin Morris, Farshid Sadeghi, Yong-Ching Chen, Chinpei Wang, Ben Wang
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. November 2018, 140(6): 061402.
Paper No: TRIB-18-1047
https://doi.org/10.1115/1.4040051
Published Online: May 21, 2018
View Article titled, Effect of Residual Stresses on Microstructural Evolution Due to Rolling Contact Fatigue
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Topics: Fatigue, Residual stresses, Rolling contact, Steel, Stress, Simulation, Finite element analysis, Modeling, Phase transitions
Journal Articles

A Novel Modeling Approach to Simulate Rolling Contact Fatigue and Three-Dimensional Spalls

Aditya A. Walvekar, Dallin Morris, Zamzam Golmohammadi, Farshid Sadeghi, Martin Correns
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. May 2018, 140(3): 031101.
Paper No: TRIB-17-1163
https://doi.org/10.1115/1.4038098
Published Online: October 23, 2017
View Article titled, A Novel Modeling Approach to Simulate Rolling Contact Fatigue and Three-Dimensional Spalls
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Topics: Damage, Fatigue, Modeling, Pressure, Rolling contact, Steel, Stress, Thrust bearings, Yield strength, Fatigue damage
Journal Articles

A Combined EFEM–Discrete Element Method Dynamic Model of Rotor–Bearing–Housing System

Lijun Cao, Farshid Sadeghi, Lars-Erik Stacke
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. November 2017, 139(6): 061102.
Paper No: TRIB-16-1332
https://doi.org/10.1115/1.4036378
Published Online: June 30, 2017
View Article titled, A Combined EFEM–Discrete Element Method Dynamic Model of Rotor–Bearing–Housing System
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Topics: Bearings, Rotors, Deformation, Clearances (Engineering)
Journal Articles

Closure to “Discussion of ‘A New Approach for Fatigue Damage Modeling of Subsurface-Initiated Spalling in Large Rolling Contacts’” (2016, ASME J. Tribol., 139(3), p. 035501)

Farshid Sadeghi, Aditya A. Walvekar
Journal: Journal of Tribology
Publisher: ASME
Article Type: Closures
J. Tribol. May 2017, 139(3): 036001.
Paper No: TRIB-16-1252
https://doi.org/10.1115/1.4034638
Published Online: November 22, 2016
View Article titled, Closure to “Discussion of ‘A New Approach for Fatigue Damage Modeling of Subsurface-Initiated Spalling in Large Rolling Contacts’” (2016, ASME J. Tribol., 139(3), p. 035501)
Open the PDF for Closure to “Discussion of ‘A New Approach for Fatigue Damage Modeling of Subsurface-Initiated Spalling in Large Rolling Contacts’” (2016, ASME J. Tribol., 139(3), p. 035501) in another window
Topics: Fatigue, Fatigue damage, Modeling, Stress, Damage, Rolling contact, Torsion