Rolling Contact Fatigue in Bearings: Phenomenology and Modelling Techniques

摘要: Current understanding of rolling contact fatigue is reviewed. The stress developed in the subsurface as a function loading conditions, along with resulting microstructural changes are described. Focusing on dissolution hardening phases and occurrence recovery recrystallization, relationship between load microstructure evolution analysed terms component life. role played by inclusions intermetallic particles, well primary precipitates, outlined. complexity explained many factors influencing it, which makes difficult to generalise its fundamentals. importance choice suitability computational techniques employed simulate it highlighted, available characterisation techniques. A variety modelling presented. Empirical models have been an aid predicting fatigue, especially when combined statistical approaches, but fail addressing fundamentals phenomenon, particularly at submicron scales. Micromechanics useful spatial distribution stresses damage, fails finding strategies for controlling it. need able relate described, tools mathematical reviewed, new irreversible thermodynamics approach linking phenomena across scales proposed.