Journal of Tribology: Recent submissions
Now showing items 981-1000 of 7312
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Numerical Study on Effect of Dimples on Tribo-Characteristics in Non-Newtonian Thermal Elastohydrodynamic Lubrication Point Contacts With Different Mechanical and Thermal Properties
(The American Society of Mechanical Engineers (ASME), 2020)The transient behavior of tribo-characteristics caused by micro-dimples on point contact surfaces with different mechanical and thermal properties was investigated based on non-Newtonian thermal elastohydrodynamic lubrication ... -
A Reconstruction and Contact Analysis Method of Three-Dimensional Rough Surface Based on Ellipsoidal Asperity
(The American Society of Mechanical Engineers (ASME), 2020)The 3D rough surface modeling and contact analysis is a difficult problem in the study of rough surface contact. In this paper, a new method for reconstruction and contact analysis of asperities on 3D rough surfaces is ... -
Water Lubrication of Ni/Al2O3 Composite Coatings Sliding With Si3N4
(The American Society of Mechanical Engineers (ASME), 2020)Inspired by the excellent water lubrication properties of Al2O3, two methods are used to fabricate Ni/Al2O3 composite coatings for water lubrication. One is the conventional composite electroplating technique (one-step ... -
A Quantitative Structure Tribo-Ability Relationship Model for Predicting the Antiwear Properties of Ionic Liquids as Lubricant Additives in Dimethyl Sulfoxide
(The American Society of Mechanical Engineers (ASME), 2020)The structural parameters of 23 ionic liquids were calculated by the Hartree–Fock ab initio method. The relationship between the antiwear properties of ionic liquids dissolved in dimethyl sulfoxide and the structural ... -
Influence of Fluid Film Boundary Migration on Dynamic Coefficients of Journal Bearings and Behavior of Rotor System
(The American Society of Mechanical Engineers (ASME), 2020)The position of fluid film in journal bearing will change while the journal moving in bearing, which can be named fluid film boundary migration (FFBM). It is usually ignored in the calculation of linear dynamic coefficients. ... -
An Investigation of the Tribological Behavior of Hf-Based Bulk Metallic Glass and Crystalline Alloys
(The American Society of Mechanical Engineers (ASME), 2020)The use of bulk metallic glasses (BMGs) as advanced materials for many applications is attractive, due to their improved mechanical performance over their crystalline counterparts: typically providing higher strength and ... -
Abrasive Wear Mechanism of Microwave-Assisted Compression Molded Kenaf/HDPE Composite
(The American Society of Mechanical Engineers (ASME), 2020)The present work aims to study the abrasive wear of kenaf/high-density polyethylene (HDPE) composites with 20% weight fraction reinforcement of the kenaf fiber. A unique technique of the microwave-assisted compression ... -
The Wear Performance at High Temperatures of ZrO2-Reinforced Aluminum Matrix Composites Produced by Mechanochemical Reaction Method
(The American Society of Mechanical Engineers (ASME), 2020)In this study, high-temperature wear performance of A356+Gr-ZrO2 aluminum matrix composites (AMCs) produced by the mechanochemical reaction method was investigated. After the aluminum composite powders were cold-pressed ... -
Elastohydrodynamic Lubrication Line Contact of a Functionally Graded Material Coated Half-Plane
(The American Society of Mechanical Engineers (ASME), 2020)The elastohydrodynamic lubrication line contact problem between a functionally graded material (FGM) coated half-plane and a rigid cylindrical punch is investigated. The inhomogeneous elastic properties of the FGM coating ... -
Testing the Validity of Greenwood and Tripp’s Sum Surface Assumption for Elastic-Plastic Contact
(The American Society of Mechanical Engineers (ASME), 2020)The complexity of modeling friction between rough surfaces has prompted many researchers to use Greenwood and Tripp’s sum surface assumption to simplify the analysis. This assumption approximates the contact between two ... -
Numerical Simulation of Ultrasonic-Assisted Grinding Surfaces With Fast Fourier Transform
(The American Society of Mechanical Engineers (ASME), 2020)Numerical simulation of three-dimensional rough surfaces based on fast Fourier transform (FFT) is revisited. A more systematic approach, which is an extension of the current FFT-based simulation models, is proposed to ... -
Comparative Study on Dynamic Characteristics of Double-Pad Inwardly and Outwardly Pumping Water-Lubricated Spiral-Groove Thrust Bearings
(The American Society of Mechanical Engineers (ASME), 2020)The dynamic characteristics of the double-pad inwardly pumping water-lubricated spiral-groove thrust bearing (SGTB) is different from that of the outwardly pumping version, especially under a high-speed condition. However, ... -
Analytical Method for Hydrodynamic Force in Finite-Length Tilting-Pad Journal Bearing Including Turbulence Effect
(The American Society of Mechanical Engineers (ASME), 2020)To improve the efficiency in nonlinear dynamic calculation of finite-length tilting-pad journal bearings (TPJBs) under dynamic loads, an analytical method for hydrodynamic bearing forces, which considers the turbulence ... -
Friction Reduction of Oil-Impregnated Sintered Bearings by Surface Texturing
(The American Society of Mechanical Engineers (ASME), 2020)In this study, to reduce the friction of oil-impregnated sintered bearings, rounded-rectangle dimples are processed on the bearing surface and the bearing properties are examined. The dimpled bearings achieved lower friction ... -
Friction and Friction Heat of Micronscale Iron
(The American Society of Mechanical Engineers (ASME), 2020)This paper investigates the friction and friction heat of the micronscale iron under the influences such as the velocity of the slider and temperature of the substrate by using the smoothed particle hydrodynamics simulations. ... -
Temperature Dependence of the Friction Coefficient of Grease-Lubricated PTFE Linear Bushings Against Titanium Grade 5 Alloy (Ti6Al4V) and Life Tests Operating at High-Speed
(The American Society of Mechanical Engineers (ASME), 2020)Linear bushings are a compact and reliable solution for mechanisms requiring relative linear displacement between moving parts. In this paper, we report the dependence of the coefficient of friction (COF) of polytetraflu ... -
Friction Layer Analysis of a Surface Acoustic Wave Motor
(The American Society of Mechanical Engineers (ASME), 2020)This study applied appropriate assumptions to simplify a surface acoustic wave (SAW) motor model, as well as the elastic friction layer concept to analyze the two-dimensional contact problem. The effect of inertial force ... -
Analytically Predicating the Multi-Dimensional Accuracy of the Honed Engine Cylinder Bore
(The American Society of Mechanical Engineers (ASME), 2020)The dimensional accuracy of engine cylinder bore at multiscale has a tremendous influence on engine performances including friction power loss, vibration, leak tightness between piston and cylinder, and wear resistance. ... -
Effects of Ball’s Rolling, Gyroscopic, and Spin Slide in a Ball Bearing on Raceway’s Stress and Fatigue Life
(The American Society of Mechanical Engineers (ASME), 2020)The motions between the ball and raceway in a ball bearing involve rolling, gyroscopic, and spin slide. These complex motions result in the serious distribution of the friction force. Based on the contact mechanics in ... -
A Comprehensive Investigation on Tribological Performance of Nano-Silver and Nano-Gold Additivated Fluids on Wearing Surfaces
(The American Society of Mechanical Engineers (ASME), 2020)In this study, the tribological performances of the colloidal suspensions with the additives of nano-silver and nano-gold were examined via wear experiments of AA7075-T6 material. The nanoparticles were penetrated in the ...