Study on Effect of Surface Texture on the Performance of Hydrodynamic Journal Bearing
Krishan Kumar Gupta1, Raj Kumar2, Harendra Kumar3, Medha Sharma4
1Krishan Kumar Gupta, Department of Mechanical Engineering, BBDIT, Ghaziabad, Mahamaya Technical University, Noida, India.
2Raj Kumar, Department of Mechanical Engineering, BBDIT, Ghaziabad, Mahamaya Technical University, Noida, India.
3Harendra Kumar, Department of Mechanical Engineering, BBDIT, Ghaziabad, Mahamaya Technical University, Noida, India.
4Medha Sharma, Department of Mechanical Engineering, BBDIT, Ghaziabad, Mahamaya Technical University, Noida, India.
Manuscript received on September 23, 2013. | Revised Manuscript received on October 12, 2013. | Manuscript published on October 30, 2013. | PP: 49-54 | Volume-3, Issue-1, October 2013. | Retrieval Number:  A2145103113/2013©BEIESP

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Abstract: The present study examines effect of surface texture on hydrodynamic journal bearing performance. The work is divided into two steps: 1. Mechanical indentation texturing technique used to incorporate the micro-dimples on bearing surface. 2. Experimentation on smooth and textured journal bearing with two oil inlet holes located at ± 90° to load line, to examine the effect of surface texture. A series of experimental results are presented, the effect of micro-dimples on pressure distribution on center plane of smooth and textured journal bearing at different loads and speeds. The Experimental results show that the pressure increases when surface texture (micro-dimples) is added on bearing surface. It is observed that with the increase of loads (200N to 800N) at constant speed and constant oil supply pressure, the percentage increase of maximum pressure (% P max) is more in textured journal bearing w.r.t smooth journal bearing and with the increase of speeds (1000 rpm to 3000 rpm) at constant load and constant oil supply pressure, percentage increase of maximum pressure (% P max) is more in textured journal bearing w.r.t smooth journal bearing.
Keywords: Journal bearing, Surface texture, Bearing performance, Pressure Distribution in journal bearing.