Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction

Knowledge of tribology is very important for successful design of machine elements. The most effective mean of overcome failures in machine elements is by proper lubrication. With the presence bio-based lubrications in the industry, the tribology understanding will changed significantly and will dir...

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Main Author:	Ibrahim, Alia
Format:	Thesis
Language:	English
Published:	2010
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/12284/4/AliaIbrahimMFKM2010.pdf
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spelling	my-utm-ep.122842017-09-19T04:02:29Z Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction 2010-12 Ibrahim, Alia TJ Mechanical engineering and machinery Knowledge of tribology is very important for successful design of machine elements. The most effective mean of overcome failures in machine elements is by proper lubrication. With the presence bio-based lubrications in the industry, the tribology understanding will changed significantly and will directly affect the performance and reliability to the machine elements. In this study, involute spur gear is used and remodeled using computational fluid dynamic software to simulate speed and squeeze phenomena behaviours. The gear teeth load is treated in a simplified idealistic way according to the experimental gear load spectrum. This analysis will enable the study of elastohydrodynamic lubrication in rectangular conjunction with different type of bio-based lubricants. Emphasis of analysis is focused on the speed and dynamic pressure distribution along the pinion surface. For each type of lubricant, computations were carried out in sixteen different low speeds which are 1.00 m/s until 0.05 m/s and 0.01 m/s. The results show that computer modelling exercise have demonstrated CFD with standard k-epsilon model is suitable for modelling a rectangular conjunction. 2010-12 Thesis http://eprints.utm.my/id/eprint/12284/ http://eprints.utm.my/id/eprint/12284/4/AliaIbrahimMFKM2010.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering 1. Bharat Bhushan. (1999). “Principles And Applications Of Tribology.” John Wiley & Sons, Inc. 2. Hamrock, B. J. and Dowson, D. (1977). “Isothermal elastohydrodynamic lubrication of point contacts. Part IV –starvation results.” Trans. ASME F, J. Tribology, 99(1), 15-23. 3. Castle, P. and Dowson, D. (1972). “A theoretical analysis of the starved elastohydrodynamic lubrication problem for cylinders in line contact.” In Proceedings of 2nd IMechE Symposium on Elastohydrodynamic Lubrication, pp. 131-137. 4. Youqiang Wang, Hongqi Li, Jingwei Tong and Peiran Yang. (2004). “Transient thermoelastohydrodynamic lubrication analysis of an involute spur gear.” ELSEVIER, Tribology International, 37, 773-782. 5. Young-Pil Koo. (2004) “Transiet EHL Analysis on Spur Gear Teeth with Consideration of Gear Kinematics.” KSME International Journal, Vol. 18 No. 8, pp. 1319-1326. 6. M.Amarnath, C. Sujatha, S. Swarnamani. (2008). “Experimental studies on the effects of reduction in gear tooth stiffness and lubricant film thickness in a spur geared system.” ELSEVIER, Tribology International, 42, 340-352. 7. T.T. Petry-Johnson, A. Kahraman, N.E. Anderson and D.R. Chase. (2007). “EXPERIMENTAL INVESTIGATION OF SPUR GEAR EFFICIENCY.” ASME and General Motors. 8. Radoslav Rakic. (2004). “The influence of lubricants on cam failure.” Tribology International. 9. Brajendra K. Sharma., Umer Rashid., Farooq Anwar., Sevim Z. Erhan. (2009). “Lubricant properties of Moringa oil using thermal and tribological techniques.” Springer. 10. A. B. Hassan, M. S. Abolarin, A. Nasir, and U. Ratchel. (2006). “Investigation on the Use of Palm Olein as Lubrication Oil.” Leonardo Electronic Journal of Practices and Technologies. 11. R. Martinsa,*, J. Seabrab, A. Britoc, Ch. Seyfertd, R. Lutherd, A. Igartuae. (2006). “Friction coefficient in FZG gears lubricated with industrial gear oils: Biodegradable ester vs. mineral oil.” Tribology International, 39:512- 521
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Ibrahim, Alia Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction
description	Knowledge of tribology is very important for successful design of machine elements. The most effective mean of overcome failures in machine elements is by proper lubrication. With the presence bio-based lubrications in the industry, the tribology understanding will changed significantly and will directly affect the performance and reliability to the machine elements. In this study, involute spur gear is used and remodeled using computational fluid dynamic software to simulate speed and squeeze phenomena behaviours. The gear teeth load is treated in a simplified idealistic way according to the experimental gear load spectrum. This analysis will enable the study of elastohydrodynamic lubrication in rectangular conjunction with different type of bio-based lubricants. Emphasis of analysis is focused on the speed and dynamic pressure distribution along the pinion surface. For each type of lubricant, computations were carried out in sixteen different low speeds which are 1.00 m/s until 0.05 m/s and 0.01 m/s. The results show that computer modelling exercise have demonstrated CFD with standard k-epsilon model is suitable for modelling a rectangular conjunction.
format	Thesis
qualification_level	Master's degree
author	Ibrahim, Alia
author_facet	Ibrahim, Alia
author_sort	Ibrahim, Alia
title	Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction
title_short	Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction
title_full	Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction
title_fullStr	Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction
title_full_unstemmed	Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction
title_sort	elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2010
url	http://eprints.utm.my/id/eprint/12284/4/AliaIbrahimMFKM2010.pdf
_version_	1747814914046558208

Elastohydrodynamic lubrication for bio-based lubricants in rectangular conjunction

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