Volume 131 Issue 2 | J. Tribol. | ASME Digital Collection

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Research Papers

Applications

Rotordynamic Performance of Flexure Pivot Tilting Pad Gas Bearings With Vibration Damper

Aaron Rimpel, Daejong Kim

J. Tribol. April 2009, 131(2): 021101. doi: https://doi.org/10.1115/1.3063809

Abstract

View articletitled, Rotordynamic Performance of Flexure Pivot Tilting Pad Gas Bearings With Vibration Damper

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Topics: Bearings , Rotors , Shells , Simulation , Stiffness , Gas bearings

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

Nick Weinzapfel, Farshid Sadeghi

J. Tribol. April 2009, 131(2): 021102. doi: https://doi.org/10.1115/1.3063817

Abstract

View articletitled, 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

Analysis of Multirecess Hydrostatic Journal Bearing Operating With Micropolar Lubricant

Suresh Verma, Vijay Kumar, K. D. Gupta

J. Tribol. April 2009, 131(2): 021103. doi: https://doi.org/10.1115/1.3070583

Abstract

View articletitled, Analysis of Multirecess Hydrostatic Journal Bearing Operating With Micropolar Lubricant

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Topics: Flow (Dynamics) , Hydrostatics , Journal bearings , Lubricants , Valves , Bearings , Stress

Coatings & Solid Lubricants

Effect of Coating Thickness on the Friction Coefficients and Torque-Tension Relationship in Threaded Fasteners

Sayed A. Nassar, Amro M. Zaki

J. Tribol. April 2009, 131(2): 021301. doi: https://doi.org/10.1115/1.3085941

Abstract

View articletitled, Effect of Coating Thickness on the Friction Coefficients and Torque-Tension Relationship in Threaded Fasteners

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Topics: Bearings , Coating processes , Coatings , Fasteners , Friction , Thread , Torque , Tension

Contact Mechanics

Frictional Energy Dissipation in a Rough Hertzian Contact

D. Dini, D. A. Hills

J. Tribol. April 2009, 131(2): 021401. doi: https://doi.org/10.1115/1.3063697

Abstract

View articletitled, Frictional Energy Dissipation in a Rough Hertzian Contact

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Topics: Energy dissipation , Shear (Mechanics) , Surface roughness , Pressure , Stress , Traction , Displacement , Contact mechanics

A Numerical Static Friction Model for Spherical Contacts of Rough Surfaces, Influence of Load, Material, and Roughness

W. Wayne Chen, Q. Jane Wang

J. Tribol. April 2009, 131(2): 021402. doi: https://doi.org/10.1115/1.3063814

Abstract

View articletitled, A Numerical Static Friction Model for Spherical Contacts of Rough Surfaces, Influence of Load, Material, and Roughness

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Topics: Stiction , Stress , Surface roughness , Friction , Shear (Mechanics)

Static Friction Model of Elastic-Plastic Contact Behavior of Surface With Elliptical Asperities

Yeau-Ren Jeng, Shin-Rung Peng

J. Tribol. April 2009, 131(2): 021403. doi: https://doi.org/10.1115/1.3075857

Abstract

View articletitled, Static Friction Model of Elastic-Plastic Contact Behavior of Surface With Elliptical Asperities

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Topics: Deformation , Friction , Plasticity , Pressure , Shear (Mechanics) , Shear strength , Stiction , Stress , Shear stress

The Effect of Surface Roughness on Static Friction and Junction Growth of an Elastic-Plastic Spherical Contact

D. Cohen, Y. Kligerman, I. Etsion

J. Tribol. April 2009, 131(2): 021404. doi: https://doi.org/10.1115/1.3075866

Abstract

View articletitled, The Effect of Surface Roughness on Static Friction and Junction Growth of an Elastic-Plastic Spherical Contact

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Topics: Junctions , Plasticity , Stiction , Stress , Surface roughness , Deformation , Tangential loading

Multiple Contacts of Similar Elastic Materials

N. Sundaram, T. N. Farris

J. Tribol. April 2009, 131(2): 021405. doi: https://doi.org/10.1115/1.3078772

Abstract

View articletitled, Multiple Contacts of Similar Elastic Materials

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Topics: Contact mechanics , Cylinders , Pressure , Stress , Surface roughness , Integral equations , Shear (Mechanics) , Numerical analysis

Transient Thermomechanical Analysis of Sliding Electrical Contacts of Elastoplastic Bodies, Thermal Softening, and Melting Inception

W. Wayne Chen, Q. Jane Wang, Wansik Kim

J. Tribol. April 2009, 131(2): 021406. doi: https://doi.org/10.1115/1.3084214

Abstract

View articletitled, Transient Thermomechanical Analysis of Sliding Electrical Contacts of Elastoplastic Bodies, Thermal Softening, and Melting Inception

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Topics: Deformation , Electric current , Heat flux , Melting , Pressure , Stress , Temperature , Thermomechanics , Transients (Dynamics) , Heat

Creep Relaxation of an Elastic–Perfectly Plastic Hemisphere in Fully Plastic Contact

Andreas Goedecke, Randolf Mock

J. Tribol. April 2009, 131(2): 021407. doi: https://doi.org/10.1115/1.3081978

Abstract

View articletitled, Creep Relaxation of an Elastic–Perfectly Plastic Hemisphere in Fully Plastic Contact

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Topics: Creep , Stress , Simulation , Relaxation (Physics)

Three-Dimensional Semiperiodic Line Contact–Periodic in Contact Length Direction

Shuangbiao Liu, Diann Y. Hua

J. Tribol. April 2009, 131(2): 021408. doi: https://doi.org/10.1115/1.3084237

Abstract

View articletitled, Three-Dimensional Semiperiodic Line Contact–Periodic in Contact Length Direction

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Topics: Algorithms , Displacement , Pressure , Stress , Contact mechanics , Surface roughness , Cushioning materials , Rollers , Texture (Materials)

A Multilevel Model for Elastic-Plastic Contact Between a Sphere and a Flat Rough Surface

F. Steven Wang, Joseph M. Block, W. Wayne Chen, Ashlie Martini, Kun Zhou, Leon M. Keer, Q. Jane Wang

J. Tribol. April 2009, 131(2): 021409. doi: https://doi.org/10.1115/1.3085944

Abstract

View articletitled, A Multilevel Model for Elastic-Plastic Contact Between a Sphere and a Flat Rough Surface

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Topics: Deformation , Pressure , Stress , Surface roughness , Simulation

Asperity Creep Measured by the Reflection of Ultrasound at Rough Surface Contact

M. Gonzalez-Valadez, R. S. Dwyer-Joyce

J. Tribol. April 2009, 131(2): 021410. doi: https://doi.org/10.1115/1.3089217

Abstract

View articletitled, Asperity Creep Measured by the Reflection of Ultrasound at Rough Surface Contact

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Topics: Creep , Reflection , Stiffness , Stress , Surface roughness , Ultrasound , Steel , Aluminum , Deformation

Elastohydrodynamic Lubrication

Soft EHL Simulations of U-Cup and Step Hydraulic Rod Seals

Bo Yang, Richard F. Salant

J. Tribol. April 2009, 131(2): 021501. doi: https://doi.org/10.1115/1.3063820

Abstract

View articletitled, Soft EHL Simulations of U-Cup and Step Hydraulic Rod Seals

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Topics: Deformation , Fluid mechanics , Leakage , Pressure , Surface roughness , Thermal analysis , Sealing (Process) , Fluids , Engineering simulation , Simulation

Experimental and Numerical Study of Air Entrainment Between Web and Spirally Grooved Roller

Si Bui Quang Tran, Yong Hoon Yoo, Jin Hwan Ko, Jihoon Kim, Doyoung Byun, Jae Woo Lee, Yung Hwan Byun, Kee Hyun Shin

J. Tribol. April 2009, 131(2): 021502. doi: https://doi.org/10.1115/1.3070582

Abstract

View articletitled, Experimental and Numerical Study of Air Entrainment Between Web and Spirally Grooved Roller

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Topics: Air entrainment , Deflection , Rollers , Traction

The Validity of Linear Elasticity in Analyzing Surface Texturing Effect for Elastohydrodynamic Lubrication

A. Shinkarenko, Y. Kligerman, I. Etsion

J. Tribol. April 2009, 131(2): 021503. doi: https://doi.org/10.1115/1.3071973

Abstract

View articletitled, The Validity of Linear Elasticity in Analyzing Surface Texturing Effect for Elastohydrodynamic Lubrication

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Topics: Elasticity , Elastomers , Elastohydrodynamic lubrication , Deformation , Lubrication , Load bearing capacity , Pressure

Friction & Wear

Thermomechanical Coupling in Oscillatory Systems With Application to Journal Bearing Seizure

Jun Wen, M. M. Khonsari, Dow Chemical Endowed Chair in Rotating Machinery

J. Tribol. April 2009, 131(2): 021601. doi: https://doi.org/10.1115/1.3071976

Abstract

View articletitled, Thermomechanical Coupling in Oscillatory Systems With Application to Journal Bearing Seizure

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Topics: Bushings , Clearances (Engineering) , Cycles , Heat , Journal bearings , Stress , Temperature , Thermomechanics , Convection , Friction

Hydrodynamic Lubrication

Steady State Performance Characteristics of Single Pad Externally Adjustable Fluid Film Bearing in the Laminar and Turbulent Regimes

B. S. Shenoy, R. Pai

J. Tribol. April 2009, 131(2): 021701. doi: https://doi.org/10.1115/1.3070580

Abstract

View articletitled, Steady State Performance Characteristics of Single Pad Externally Adjustable Fluid Film Bearing in the Laminar and Turbulent Regimes

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Topics: Bearings , Fluid films , Friction , Performance characterization , Steady state , Turbulence , Pressure , Flow (Dynamics) , Load bearing capacity

Thermohydrodynamic Study of Multiwound Foil Bearing Using Lobatto Point Quadrature

Kai Feng, Shigehiko Kaneko

J. Tribol. April 2009, 131(2): 021702. doi: https://doi.org/10.1115/1.3070579

Abstract

View articletitled, Thermohydrodynamic Study of Multiwound Foil Bearing Using Lobatto Point Quadrature

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Topics: Bearings , Deflection , Film thickness , Foil bearings , Lubricants , Pressure , Stress , Temperature , Thermohydrodynamics , Viscosity

Application of the Amplitude Reduction Technique Within Probabilistic Rough EHL Models

Laurentiu Moraru, Theo. G Keith, Jr.

J. Tribol. April 2009, 131(2): 021703. doi: https://doi.org/10.1115/1.2961919

Abstract

View articletitled, Application of the Amplitude Reduction Technique Within Probabilistic Rough EHL Models

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Topics: Deformation , Surface roughness , Fluids , Pressure , Stress , Algorithms

Lubricants

Analysis of a Porous Elastic Sheet Damper With a Magnetic Fluid

Jun Liu

J. Tribol. April 2009, 131(2): 021801. doi: https://doi.org/10.1115/1.3075870

Abstract

View articletitled, Analysis of a Porous Elastic Sheet Damper With a Magnetic Fluid

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Topics: Magnetic fields , Magnetic fluids , Dampers , Damping

Magnetic Storage

A Numerical Simulation Method to Evaluate the Static and Dynamic Characteristics of Flying Head Sliders on Patterned Disk Surfaces

Takefumi Hayashi, Hideyo Yoshida, Yasunaga Mitsuya

J. Tribol. April 2009, 131(2): 021901. doi: https://doi.org/10.1115/1.3063696

Abstract

View articletitled, A Numerical Simulation Method to Evaluate the Static and Dynamic Characteristics of Flying Head Sliders on Patterned Disk Surfaces

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Topics: Computer simulation , Disks , Lubrication , Pressure , Film thickness , Servomechanisms , Texture (Materials) , Shear flow , Magnetic disc storage

A Simplified Dynamic Model for the Analysis of the Slider Off-Track Motion Due to Head-Disk Interactions

Yanhui Yuan, Shao Wang

J. Tribol. April 2009, 131(2): 021902. doi: https://doi.org/10.1115/1.3063808

Abstract

View articletitled, A Simplified Dynamic Model for the Analysis of the Slider Off-Track Motion Due to Head-Disk Interactions

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Topics: Disks , Displacement , Friction , Actuators , Stiffness

High Velocity Oblique Impact and Coefficient of Restitution for Head Disk Interface Operational Shock

Raja R. Katta, Andreas A. Polycarpou, Jorge V. Hanchi, Robert M. Crone

J. Tribol. April 2009, 131(2): 021903. doi: https://doi.org/10.1115/1.3078770

Abstract

View articletitled, High Velocity Oblique Impact and Coefficient of Restitution for Head Disk Interface Operational Shock

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Topics: Disks , Finite element analysis , Shock (Mechanics) , Corners (Structural elements) , Finite element model , Deformation , Energy dissipation

Micro-Nano Tribology

Study on Contact Characteristic of Nanoscale Asperities by Using Molecular Dynamics Simulations

Tianxiang Liu, Geng Liu, Peter Wriggers, Shijun Zhu

J. Tribol. April 2009, 131(2): 022001. doi: https://doi.org/10.1115/1.3063812

Abstract

View articletitled, Study on Contact Characteristic of Nanoscale Asperities by Using Molecular Dynamics Simulations

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Topics: Adhesion , Adhesives , Atoms , Displacement , Molecular dynamics simulation , Nanoscale phenomena , Probes , Simulation , Stress , Shapes

Other (Seals, Manufacturing)

Load-Independent Spin Power Losses of a Spur Gear Pair: Model Formulation

S. Seetharaman, A. Kahraman

J. Tribol. April 2009, 131(2): 022201. doi: https://doi.org/10.1115/1.3085943

Abstract

View articletitled, Load-Independent Spin Power Losses of a Spur Gear Pair: Model Formulation

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Topics: Drag (Fluid dynamics) , Gears , Rotation , Flow (Dynamics) , Lubricants , Particle spin , Spin (Aerodynamics)

Oil Churning Power Losses of a Gear Pair: Experiments and Model Validation

S. Seetharaman, A. Kahraman, M. D. Moorhead, T. T. Petry-Johnson

J. Tribol. April 2009, 131(2): 022202. doi: https://doi.org/10.1115/1.3085942

Abstract

View articletitled, Oil Churning Power Losses of a Gear Pair: Experiments and Model Validation

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Topics: Gears , Rotation , Particle spin , Spin (Aerodynamics)

A Voronoi Finite Element Study of Fatigue Life Scatter in Rolling Contacts

Behrooz Jalalahmadi, Farshid Sadeghi

J. Tribol. April 2009, 131(2): 022203. doi: https://doi.org/10.1115/1.3063818

Abstract

View articletitled, A Voronoi Finite Element Study of Fatigue Life Scatter in Rolling Contacts

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Topics: Electromagnetic scattering , Fatigue , Fatigue life , Finite element analysis , Stress , Elastic moduli , Shear stress , Bearings , Rolling contact , Finite element methods