Non-Newtonian Thermal Analyses of Point EHL Contacts Using the Eyring Model-Reference-Cited by-同舟云学术

Non-Newtonian Thermal Analyses of Point EHL Contacts Using the Eyring Model

Published:2005-01-01 Issue:1 Volume:127 Page:70-81
ISSN:0742-4787
Container-title:Journal of Tribology
language:en
Short-container-title:

Author:

Liu Xiaoling¹,Jiang Ming¹,Yang Peiran¹,Kaneta Motohiro²

Affiliation:

1. School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, People’s Republic of China

2. Department of Mechanical and Control Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan

Abstract

A non-Newtonian numerical solution system for the thermal elastohydrodynamic lubrication (EHL) problems in point contacts has been developed. The Eyring rheology model has been used to describe the non-Newtonian flow of the lubricant. An effective viscosity has been defined for the Eyring fluid. The Newtonian solver can be applied easily to the non-Newtonian problems when the viscosity of the Newtonian fluid is replaced by the effective viscosity. A novel technique for the determination of the effective viscosity is proposed. Numerical solutions for the conventional point contact and normally crossing cylinders contact problems are presented and the effects of the entraining velocity, the load, the slide-roll ratio, and the characteristic shear stress of the Eyring fluid on the lubricating performance are discussed. The results indicate that the non-Newtonian thermal EHL theory predicts more realistic film temperatures and traction coefficients.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

Link

http://asmedigitalcollection.asme.org/tribology/article-pdf/127/1/70/5821234/70_1.pdf

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