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.
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e-mail: kaneta@mech.kyutech.ac.jp
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January 2005
Technical Papers
Non-Newtonian Thermal Analyses of Point EHL Contacts Using the Eyring Model
Xiaoling Liu,
Xiaoling Liu
School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, People’s Republic of China
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Ming Jiang,
Ming Jiang
School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, People’s Republic of China
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Peiran Yang,
Peiran Yang
School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, People’s Republic of China
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Motohiro Kaneta
e-mail: kaneta@mech.kyutech.ac.jp
Motohiro Kaneta
Department of Mechanical and Control Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan
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Xiaoling Liu
School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, People’s Republic of China
Ming Jiang
School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, People’s Republic of China
Peiran Yang
School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, People’s Republic of China
Motohiro Kaneta
Department of Mechanical and Control Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan
e-mail: kaneta@mech.kyutech.ac.jp
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division March 21, 2003; revised manuscript received October 5, 2004. Associate Editor: C. H. Venner.
J. Tribol. Jan 2005, 127(1): 70-81 (12 pages)
Published Online: February 7, 2005
Article history
Received:
March 21, 2003
Revised:
October 5, 2004
Online:
February 7, 2005
Citation
Liu , X., Jiang , M., Yang, P., and Kaneta, M. (February 7, 2005). "Non-Newtonian Thermal Analyses of Point EHL Contacts Using the Eyring Model ." ASME. J. Tribol. January 2005; 127(1): 70–81. https://doi.org/10.1115/1.1843161
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