Results 101 to 110 of about 245 (127)

On the TEHL Theory, Part II: Ellipsoidal Profile Application

Tribology Transactions, 1992
A simplified solution is obtained to the thermoelastohydrodynamic lubrication problem involving ellipsoidal contacts subjected to heavy loads.
Keping Hou, Czeslaw M. Rodkiewicz
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Study on TEHL flash temperature of helical gear pair considering profile modification

Industrial Lubrication and Tribology, 2022
Purpose The purpose of this paper is to investigate the thermal elastohydrodynamic lubrication (TEHL) flash temperature of the helical gear pairs considering profile modification. Design/methodology/approach A flash temperature model of the helical gear pair considering the profile modification is proposed based on the TEHL and meshing theories.
Yue Liu, Jiayu Gong
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On the TEHL Theory. Part I: Dimensionless Problem Formulation

Tribology Transactions, 1992
Since the thermoelastohydrodynamic and elastohydrodynamic lubrication (TEHL and EHL) problems are predominantly heat transfer (HT) and/or fluid mechanics (FM) problems, it is proposed that the pertinent dimensionless quantities defined, in some instances tabulated, and commonly used in these branches of engineering science (HT and FM) should be used ...
Czeslaw M. Rodkiewicz, Keping Hou
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Numerical analysis of TEHL line contact problem under reciprocating motion

Tribology International, 2005
Abstract This paper presents a full numerical analysis to simulate the thermal elastohydrodynamic lubrication (TEHL) of steel–steel line contact problem under reciprocating motion. The equation system is solved using multigrid techniques. General tribological behaviors of TEHL under reciprocating motion are explained.
J. Wang, M. Kaneta, P. Yang
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Multi-dimple phenomena in TEHL point contacts

Science in China Series B, 2002
Theoretical analysis and experimental measurement of the multiple dimples in thermal elastohydrodynamic lubrication (TEHL) point contacts have been carried out. Good agreement is found between the theoretical and experimental results. A thermal multi-spike theory is proposed to explain the multi-dimple phenomena.
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Proposed TEHL Solution System for the Thrust Bearings Inclusive of Surface Deformations

Tribology Transactions, 1995
The coupled fluid and solid governing differential equations and their boundary conditions are expressed in dimensionless form which yield dimensionless problem parameters. The proposed solution system uses an efficient hybrid numerical approach. The boundary element method is employed for heat transfer in the pad, a finite difference method for the ...
C. M. Rodkiewicz, P. Yang
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Parametric Study for Design Factors on Engine Bearings by using TEHL Analysis

SAE Technical Paper Series, 2002
<div class="htmlview paragraph">As the downsizing and lightening of the engine are designed, the compact and lightweight of the housing should be required. Therefore, both the engine bearing and the housing are greatly deformed under the severe condition, and a heat generation due to the friction loss increases in the bearings.
Takeshi Katagiri, Minoru Hanahashi, Yutaka Okamoto   +2 more
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Computational Mixed TEHL Model and Stribeck Curve of a Journal Bearing

Tribology Transactions, 2016
The aim of this article is to propose a model capable of estimating the friction along a heavily loaded journal bearing under mixed and hydrodynamic lubrication.
Adrian Cubillo, Adrian Uriondo, Suresh Perinpanayagam   +2 more
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TEHL simulation on the influence of lubricants on load-dependent gear losses

Tribology International, 2017
Abstract A transient TEHL simulation model based on a finite element formulation and implemented in multiphysics software is applied to study the TEHL contact along the path of contact of spur gears with a focus on load-dependent gear loss of different lubricants. Lubricant properties including the limiting shear stress are based on measurement data.
A. Ziegltrum, T. Lohner, K. Stahl
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Stability analysis of rough journal bearings under TEHL with non-Newtonian lubricants

Tribology International, 2010
Abstract The combined effects of surface roughness and lubricants rheology on stability of a rigid rotor supported on finite journal bearing under thermal elastohydrodynamic lubrication have been investigated using the transient method. The newly derived time dependent modified Reynolds and the adiabatic energy equations were formulated using a non ...
Mongkol Mongkolwongrojn, Chatchai Aiumpronsin   +1 more
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