Volume 17, Issue 2, August 2015, Pages 362–369
G. D. Bassan1 and D. P. Vakharia2
1 Mechanical Engineering Department, Faculty of Technology, Dharmsinh Desai University, Nadiad-387001, Gujarat, India
2 Mechanical Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat-395007, Gujarat, India
Original language: English
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
An attempt has been made to obtain the optimum hollowness in the rollers to increase the fatigue life by decreasing contact stress in the tapered roller bearing. In the present analysis it has been proposed that under the applied load hollow rollers deflects more than a solid roller of the same size. By making the balls hollow which are flexible enough, the stress concentration can be reduced to increase the fatigue life of ball bearings. Finite Element Analysis has been used to investigate the contact pressure, contact stress and deformation as available theoretical method is applied only to solid tapper roller bearing. Using FEA package ANSYS the analysis has been carried out considering the equivalent cylindrical roller of actual tapered roller of the test bearing. Analysis have been made for different hollowness percentage ranging from 0% to 90% of the outer diameter of the equivalent cylindrical roller of actual tapered roller in the ANSYS to find the optimum hollowness for bearing's life period point of view. It is noticed that the approximately 65 % hollowness gives the lowest contact stress which finally increases the fatigue life of the bearing.
Author Keywords: Hollow tapered roller bearing, Finite element analysis, Hertz contact stress, Contact pressure, Fatigue life.
G. D. Bassan1 and D. P. Vakharia2
1 Mechanical Engineering Department, Faculty of Technology, Dharmsinh Desai University, Nadiad-387001, Gujarat, India
2 Mechanical Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat-395007, Gujarat, India
Original language: English
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
An attempt has been made to obtain the optimum hollowness in the rollers to increase the fatigue life by decreasing contact stress in the tapered roller bearing. In the present analysis it has been proposed that under the applied load hollow rollers deflects more than a solid roller of the same size. By making the balls hollow which are flexible enough, the stress concentration can be reduced to increase the fatigue life of ball bearings. Finite Element Analysis has been used to investigate the contact pressure, contact stress and deformation as available theoretical method is applied only to solid tapper roller bearing. Using FEA package ANSYS the analysis has been carried out considering the equivalent cylindrical roller of actual tapered roller of the test bearing. Analysis have been made for different hollowness percentage ranging from 0% to 90% of the outer diameter of the equivalent cylindrical roller of actual tapered roller in the ANSYS to find the optimum hollowness for bearing's life period point of view. It is noticed that the approximately 65 % hollowness gives the lowest contact stress which finally increases the fatigue life of the bearing.
Author Keywords: Hollow tapered roller bearing, Finite element analysis, Hertz contact stress, Contact pressure, Fatigue life.
How to Cite this Article
G. D. Bassan and D. P. Vakharia, “DETERMINATION OF OPTIMUM HOLLOWNESS IN TAPERED ROLLER BEARING USING FINITE ELEMENT ANALYSIS TO INCREASE THE FATIGUE LIFE,” International Journal of Innovation and Scientific Research, vol. 17, no. 2, pp. 362–369, August 2015.
