Open AccessLeading edge erosion of wind turbine blades: Multiaxial critical plane fatigue model of coating degradation under random liquid impacts
Author(s) -
DoagouRad Saeed,
Mishnaevsky Leon,
Bech Jakob I.
Publication year - 2020
Publication title -
wind energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 92
eISSN - 1099-1824
pISSN - 1095-4244
DOI - 10.1002/we.2515
Subject(s) - coating , turbine , structural engineering , turbine blade , degradation (telecommunications) , finite element method , erosion , materials science , vibration fatigue , enhanced data rates for gsm evolution , transient (computer programming) , fatigue testing , engineering , computer science , mechanical engineering , composite material , geology , telecommunications , paleontology , operating system
A computational model of rain erosion of wind turbine blades is presented. The model is based on the transient fluid–solid coupled finite element (FE) analysis of rain droplet/coating interaction and fatigue degradation analysis. The fatigue analysis of the surface degradation is based on multiaxial fatigue model and critical plane theory. The random rain fields are constructed computationally, and the estimated droplet sizes are included in FE model to acquire a library of load histories. Subsequently, the resulted nonproportional multiaxial high cycle fatigue problem is solved to assess the damage and lifetimes of the coatings. The approach can be used to design new coating systems withstanding longer service times.