Results 21 to 30 of about 358 (128)

Influence of Manufacturing Error Tolerances on Thermal EHL Behavior of Gears

open access: yesLubricants, 2022
Due to the electrification of vehicles, new demands are being imposed on gears, which translates to the tolerances of manufacturing errors. However, not many studies treat the impact of manufacturing error combinations on the lubricant behavior of gear ...
Rikard Hjelm, Jens Wahlström
doaj   +1 more source

Thermal Analysis of Herringbone Gears Based on Thermal Elastohydrodynamic Lubrication Considering Surface Roughness

open access: yesEnergies, 2021
To predict the temperature distribution of the tooth surface of a herringbone gear pair, a numerical method for the determination of frictional heat generation was proposed by establishing a thermal elastohydrodynamic lubrication (TEHL) model in the ...
Xiaozhou Hu   +3 more
doaj   +1 more source

Lubricated Loaded Tooth Contact Analysis and Non-Newtonian Thermoelastohydrodynamics of High-Performance Spur Gear Transmission Systems

open access: yesLubricants, 2020
Energy efficiency and functional reliability are the two key requirements in the design of high-performance transmissions. Therefore, a representative analysis replicating real operating conditions is essential.
Gajarajan Sivayogan   +2 more
doaj   +1 more source

Determination of an Optimal Oil Jet Nozzle Layout for Helical Gear Lubrication: Mathematical Modeling, Numerical Simulation, and Experimental Validation

open access: yesComplexity, Volume 2020, Issue 1, 2020., 2020
To provide a basic guidance for the selection of nozzle layout, a mathematical model of the impingement depth for helical gears under oil jet lubrication is established. Furthermore, computational fluid dynamics (CFD) methods are adopted to validate the effectiveness and accuracy of the derived impingement model.
Yu Dai   +4 more
wiley   +1 more source

Experimental verification of frequency effects in tilting pad journal bearing dynamic coefficients

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In this paper, vibrational frequency effect in dynamic coefficients of tilting pad journal bearing is verified experimentally. Tilting pad journal bearings (TPJB) is applied in various turbomachinery. Accurate evaluation of the bearing characteristics of
Nobuhiro NAGATA   +3 more
doaj   +1 more source

Predicting Fatigue Life for Finite Line Contact under Starved Elastohydrodynamic Lubrication Condition

open access: yesMathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
Surface contact fatigue is the main failure mode in many mechanical components, such as gears, bearings, and cam‐followers. A fatigue life prediction model is proposed for finite line contact under starved thermal elastohydrodynamic lubrication (TEHL) condition in this paper.
Mingyong Liu   +5 more
wiley   +1 more source

Friction and Temperature Behavior of Lubricated Thermoplastic Polymer Contacts

open access: yesLubricants, 2020
This work focuses on the friction and temperature behavior of thermo-elastohydrodynamically lubricated (TEHL) contacts under rolling-sliding conditions.
Stefan Reitschuster   +3 more
doaj   +1 more source

Effect of nanoparticle additives on rough surface cylinder in line contact under TEHL with non-Newtonian lubricant

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
This paper presents the results of a transient analysis of thermal elastohydrodynamic lubrication (TEHL) of a rough cylinder on a rough flat surface in line contact with non-Newtonian lubricant blended with Al2O3 nanoparticles.
Mongkol MONGKOLWONGROJN   +1 more
doaj   +1 more source

A multi-perspective method for gear efficiency and contact analysis

open access: yesResults in Engineering, 2023
Modern gearing applications, in particular electrification, impose new challenges in many different fields of engineering and research. In specific, new demands are imposed on gears, including higher rotational speed, lower noise acceptance, and ...
Rikard Hjelm   +7 more
doaj   +1 more source

A numerical investigation of surface waviness effects on TEHL in line contacts

open access: yes, 2022
Comprehensive knowledge of the effects of surface roughness on Thermal Elastohydrodynamic Lubrication (TEHL) in e.g. bearing and gear contacts allows us to predict the precise lubrication conditions, stress distributions and consequently the service life of these mechanical components more accurately.
Havaej, Peyman   +2 more
openaire   +2 more sources

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