Finite element analysis of hydrogen-assisted rolling-contact fatigue in bearings for wind turbines
- Toribio, J.
- Kharin, V.
- Lorenzo, M.
- Vergara, D.
ISSN: 2294-7868
Año de publicación: 2014
Volumen: 2
Páginas: 320-325
Tipo: Artículo
Otras publicaciones en: International Journal of Fracture Fatigue and Wear: Conference Series proceedings
Resumen
Offshore wind parks at locations further from the shore often involve serious difficulties, e.g. themaintenance. The bearings of offshore wind turbines are prone to suffer hydrogen-assisted rolling-contactfatigue (HA-RCF). Three important aspects linked with bearing failures are being extensively researched:(i) rolling contact fatigue (RCF), (ii) influence of carbide particles on fatigue life, (iii) local microplastic strainaccumulation via ratcheting. However, there is no reference related to bearing failure in harsh environment.This paper studies the influence of hydrogen on the life in service of offshore wind turbine bearings througha numerical study. So, the widely used RCF ball-on-rod test was simulated by finite element method toobtain the stress-strain state inside the bearings during their life in service life and, from this, to calculatethe steady-state distribution of hydrogen concentration, thereby revealing the potential damage zones.