Experimental Study of Load Sharing in Roller-Bearing Contact by Caustics and Photoelasticity
- 1 National Technical University of Athens 5 Heroes of Polytechnion Av, Greece
Abstract
Problem statement: In this study a comprehensive methodology for calculating load sharing in Roller-bearing contact was presented based on the experimental stress-optical method of caustics and Photoelasticity. Approach: The theoretical equations describing the geometry of transmitted caustic in relation to the length of the contact zone were derived and a simple mathematical set of equations correlating the maximum diameter of transmitted caustic with the magnitude of load was given.For this contact problem, the basic theory of photoelasticity was given. Results: The techniques of caustics and photoelasticity were applied on a set of PMMA (Plexiglas) Roller-bearings and on a set of PCBA (Lexan) Roller-bearings, respectively. Conclusion: The proposed method of the caustics is a reliable alternative for measuring load distribution in Roller-bearings compared to photoelasticity technique.
DOI: https://doi.org/10.3844/ajeassp.2011.294.300
Copyright: © 2011 Konstandinos G. Raptis, George A. Papadopoulos, Theodore N. Costopoulos and Andonios D. Tsolakis. This is an open access article distributed under the terms of the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Keywords
- Caustics measurements
- photoelasticity method
- roller-bearings
- elastic constants
- hertzian contact
- contact surface
- complex stress function
- plane strain
- poisson’s ratios
- light beam