Research on the Approach for the Assessment of Subsurface Rolling Contact Fatigue Damage

Abstract:

In this paper, the distribution of different critical stresses, which were used in previous correlation articles for the assessment of subsurface rolling contact fatigue damage, was analyzed. The rationality of orthogonal shear stress was selected as the key stress controlling the subsurface rolling contact fatigue damage was clarified. Base on the linear fatigue damage accumulative theory and the modification equation for the range of asymmetrical stress, the influence of friction on subsurface rolling contact fatigue damage was studied. The results show that the subsurface orthogonal shear stress is a completely symmetrical stress when the friction coefficient is zero, while it is an asymmetrical stress with considering the friction. The stress ratio of subsurface orthogonal shear stress and subsurface rolling contact fatigue damage is increased with the increasing of friction.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 845-851
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.845
• Online since: September 2013
• Authors: Xiao Feng Qin, Da Le Sun, Li Yang Xie
• Keywords: Friction, Orthogonal Shear Stress, Rolling Contact, Subsurface Fatigue Damage

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