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2018 | OriginalPaper | Chapter

4. A New Multiscale Modeling and Simulation of Rolling Contact Fatigue for Wind Turbine Bearings

Authors : Mir Ali Ghaffari, Shaoping Xiao

Published in: Advanced Wind Turbine Technology

Publisher: Springer International Publishing

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Abstract

A hierarchical multiscale method is proposed in this chapter to study the rolling contact fatigue in wind turbine bearing with the consideration of lubricant effects. This multiscale model consists of a molecular model of lubricant and a continuum model of rolling contact components. At the nanoscale, molecular dynamics is employed to model the lubricant and to calculate the friction coefficient at the rolling contact surface. At the macroscale, the finite element method is used to conduct stress analysis of the rolling contact component so that the fatigue life can be predicted. The calculated friction coefficient is passed from the molecular model to the continuum model in the proposed multiscale model. The effect of fluctuating load on the rolling contact fatigue life is also studied in this chapter. The objective of this study is to develop a new multiscale framework which connects the nanoscale and the macroscale. It shall be noted that a commonly used fatigue life model is employed in the continuum model.

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Title: A New Multiscale Modeling and Simulation of Rolling Contact Fatigue for Wind Turbine Bearings
Authors: Mir Ali Ghaffari
Shaoping Xiao
Publisher: Springer International Publishing
Book: Advanced Wind Turbine Technology
Print ISBN: 978-3-319-78165-5

Electronic ISBN: 978-3-319-78166-2

Copyright Year: 2018
DOI: https://doi.org/10.1007/978-3-319-78166-2_4