IJIRST (International Journal for Innovative Research in Science & Technology)ISSN (online) : 2349-6010

 International Journal for Innovative Research in Science & Technology

Influence of 2D versus 3D Modeling on the Fatigue Limit Calculations of Bearing Steels during Rolling Contact Fatigue


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International Journal for Innovative Research in Science & Technology
Volume 5 Issue - 6
Year of Publication : 2018
Authors : Anup Pandkar ; Bryan Allison

BibTeX:

@article{IJIRSTV5I6010,
     title={Influence of 2D versus 3D Modeling on the Fatigue Limit Calculations of Bearing Steels during Rolling Contact Fatigue},
     author={Anup Pandkar and Bryan Allison},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={5},
     number={6},
     pages={22--30},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV5I6010.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}



Abstract:

Previous analytical/computational studies on the estimation of fatigue limit of bearing steels under Rolling Contact Fatigue (RCF) were based on the concept of absence of micro-plasticity near inclusions. However, these studies were based on 2D models rather than realistic 3D models. In present research, the influence of a simplifying 2D finite element modeling assumption on the accuracy of the predicted fatigue limit has been quantified. The results of this study show that a 2D FE model over-predicts the fatigue limit compared to a 3D model in the case of stiff inclusions, and substantially under-predicts it in the case of compliant inclusions and pores. There-fore, it is suggested that use of 3D modeling should be employed, and extreme care must be taken in interpreting the estimates of fatigue limit obtained from 2D models. On a broader scale, the outcomes of this study highlight key differences between 2D versus 3D modeling when studying complex fatigue failure mechanisms such as RCF.


Keywords:

Bearing Steels, Fatigue Limit, Finite Element Analysis, Inclusions, Microstructure, Micro-plasticity, Rolling Contact Fatigue


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