Experimental investigation of lobe journal bearing with different grade oil
Keywords:
Hydrodynamic bearing, Viscosity, Pressure distribution, SAE graded oils, Sommerfield number, Lubrication.Abstract
A journal bearing consist of a shaft (or journal) which rotates freely in a supporting metal sleeve or shell and has no rolling elements. Shell type journal bearings support radial loading only, therefore construction and design is simple whereas understanding of theory and operation may be complex. Its extensive applications are in the field of turbo machinery components such as pumps, compressors and gas turbines as well as in automobile suspension system (transmission and suspension system). The performance of journal bearing depends on pressure distribution, load carrying capacity, frictional force, and speed, viscosity of oil etc. In this thesis, an attempt has been made to present three different commercial lubricant oils such as SAE10W30,SAE 15W40 and SAE 20W40 and their role in determining condition of lubrication (hydrodynamic or hydrostatic), type of pressure distribution and the stresses developed in the bearing under varying loads and speeds. The maximum pressure and Change of viscosity (before and after test) were determined and compared. The maximum stress developed at maximum pressure was 2040 KPa. It is also noticed that, there is an increase in pressure from 0 Kpa to 800 Kpa and then decreases to minimum for remaining rotation of bearing. This clearly indicates the presence of hydrodynamic lubrication in the journal bearing and good to use at higher speeds. It has been found that SAE10W30 bears more load than SAE 15W40 and SAE20W40. Viscosity change shows that temperature has no or little effect. Results prove that an alternate and cheaper lubricant SAE graded oils can be used for improving performance of journal bearing.
References
[1] Pinkus, O. and Lynn, M. Analysis of Elliptical Bearings. Trans. ASME 1956; 55-LUB-22: pp965-973.
[2] Fitzgerald, M. K. and Neal, P. B. Temperature Distributions and Heat Transfer in Journal Bearings. Trans. ASME, J. Tribol 1992; 114: pp122-130.
[3] Hussain, A., Mistry, K., Biswas, S. and Athre, K. Thermal Analysis of Non- Circular Bearing. Trans. ASME, J. Tribol 1996; 118:pp 246-254.
[4] Mishra, P. C., Pandey, R. K. and Athre, K. Temperature Profile of an Elliptic Bore Journal Bearing. Tribology International 2007; 40(3): pp453-458.
[5] Ostayen, R. A. J. V. and Beek, A. V. Thermal Modelling of the Lemon-Bore Hydrodynamic Bearing. Tribology International 2009; 42: pp23-32.
[6] Chauhan, A., Sehgal, R. and Sharma, R. K. Thermohydrodynamic Analysis of Elliptical Journal Bearing with Different Grade Oils. Tribology International 2010; 43: 1970-1977.
[7] AmitChauhan, AmitSingla, NarenderPanwar and Prashant Jindal, “CFD Based Thermo-Hydrodynamic Analysis of Circular Journal Bearing,” International Journal of Advanced Mechanical Engineering, ISSN 2250-3234 Volume 4, Number 5 (2014), Pp. 475-482
[8] S. Baskar,G. Sriram, “Experimental Analysis Of Hydrodynamic Journal Bearing Under Different Biolubricants,” Ieee-International Conference On Advances In Engineering, Science And Management (ICAESM -2012) March 30, 31, 2012
[9] NabarunBiswas,PrasunChakraborti, “Transient Analysis Of 3 Lobe Bearing Considering Surface Roughness Effect For Gas Turbine” 6th BSME International Conference On Thermal Engineering (ICTE 2014)
[10] Peeyush Vats, B.C. Sharma, Sumit Sharma, “Heat Transfer through Journal Bearing: A Case Study,” IJRET: International Journal of Research in Engineering and Technology Eissn: 2319-1163 | Pissn: 2321-7308
[11] K. M. Panday, P. L. Choudhury, And N. P. Kumar, “Numerical Unsteady Analysis of Thin Film Lubricated Journal Bearing”, IACSIT International Journal of Engineering and Technology, Vol. 4, No. 2, April 2012
[12] ArjunPanthi, Prof. Jai Balwanshi, Prof. Ajay Chandravanshi, Prof. Gourav Gupta, “ Design And Analysis Of Hydrodynamic Journal Bearing Using Raimondi And Boyd Chart” , International Journal Of Core Engineering & Management (IJCEM) Volume 2, ISSN: 2348 9510 Issue 3, June 2015
[13] Chaitanya K Desai AndDilip C Patel, “Experimental Analysis Of Pressure Distribution Of Hydrodynamic Journal Bearing: A Parametric Study”, Proceedings Of The International Conference On Mechanical Engineering 2005 (ICME2005) 28- 30 December 2005, Dhaka, Bangladesh
[14] Hussain, A., Mistry, K., Biswas, S. and Athre, K. Thermal Analysis of Non- Circular Bearing. Trans. ASME, J. Tribol 1996; 118: 246-254.
[15] SM Chun, "Thermo hydrodynamic lubrication analysis of high-speed journal bearing considering variable density and variable specific heat," Tribology International, 37, pp. 405-413, 2004
[16] J Sep, "Three dimensional hydrodynamic analysis of a journal bearing with a two component surface layer, “Tribology International, 38, pp. 97-104, 2005
[17] Baskar S and Sriram G Experimental analysis of hydrodynamic journal bearing under different bio lubricants. 2012, pp.132– 135.
[18] Mane RM, Soni S. Analysis of Hydrodynamic Plain Journal Bearing, Proc. 2013 COMSOL Conference, Bangalore, 2013.
[19] Baskar. S., Sriram.G. “Pressure Distribution Analysis Of A Hydrodynamic Journal Bearing Using Vegetable Oil Based Nano Lubricant”, International conference on advances in tribology, 2014:14-15
[20] Y.Y. Wu & W.C. Tsui “Experimental analysis of tribological properties of lubricating Oils withnanoparticles additives” Wear 262 (2007) 819–825, 10 October 2006 .
Downloads
Published
Issue
Section
Categories
License
This work is licensed under a Creative Commons Attribution 4.0 International License.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Under this license, authors retain ownership of the copyright for their articles. By submitting to the International Journal of Advanced Research in Science, Management, and Technology (IJARSMT), authors grant the journal the right of first publication. Users are free to share, copy, and redistribute the material in any medium or format, and to adapt, remix, transform, and build upon the material for any purpose, including commercially, provided that appropriate credit is given to the original author(s) and the journal, a link to the license is provided, and any changes made are indicated.
