Residual Stresses in Cylindrical Roller Bearings – A Three-Dimensional Analysis Model

Abstract:

The author presents an accurate method to calculate the residual fields in case of non-hertzian elastic-plastic contact problems in roller bearings. This kind of analysis requires a complete three-dimensional investigation due to the finite length of the contacting bodies. Previous analyses carried out in two-dimensional case are not able to take into account the complexity of the problem and the so-called edge-effect that is known to reduce the bearing fatigue life. A semi-analytical code previously developed was adapted to account for three-dimensional line contact analysis. A non-linear rate independent isotropic and kinematic hardening model is implemented for the bearing steel plastic behavior. Closed form solutions for residual stresses during cyclic non-proportional loading are obtained from the plastic strains and they are considered as initial stresses at every loading cycle.

• Periodical: Applied Mechanics and Materials (Volume 658)
• Pages: 213-218
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.658.213
• Online since: October 2014
• Authors: Gabriel Popescu*
• Keywords: Elastic-Plastic Deformation, Isotropic Hardening Model, Kinematic Hardening Model, Residual Stress, Shakedown, Three-Dimensional Line Contact

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