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Deflection Characteristics of a Statically Loaded Multiple-Bearing Differential Pinion Shaft
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English
Abstract
Theoretical and experimental determinations of load and deflection at the spigot bearing position were performed on a straddle-mounted (3-bearing) differential pinion shaft in a complete truck differential and carrier assembly. Two theoretical calculation methods are used; namely, a widely used approximate method that considers the shaft to be supported by two bearings and a digital computer method that treats the shaft as a statically indeterminate structure. Loads on the spigot bearing were measured using the Contact Pattern Analysis technique, while deflections were measured with strain gage displacement transducers, all under a statically applied input torque. Comparison of theoretical and experimental results show that the actual loads are more consistent with a 3-bearing statically indeterminate system calculation than with a simplified 2-bearing theoretical approach. Further refinement of the elastic model of the bearings is suggested to provide even closer agreement.
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Citation
Delao, M., Pfaffenberger, E., and Derner, W., "Deflection Characteristics of a Statically Loaded Multiple-Bearing Differential Pinion Shaft," SAE Technical Paper 720389, 1972, https://doi.org/10.4271/720389.Also In
References
- Harris T. A. “Rolling Bearing Analysis.” New York John Wiley & Sons, Inc. 1966
- Goodelle R. A. Derner W. J. Root L. E. “A Practical Method for Determining Contact Stresses in Elastically Loaded Line Contacts.” ASLE Trans. 13 4 October 1970
- Goodelle R. A. Derner W. J. Root L. E. “Determination of Static Load Distributions from Elastic Contacts in Rolling Element Bearings.” May 1971