TY - GEN
T1 - Wind turbine blade coating fatigue induced by raindrop impact
AU - Hu, Weifei
AU - Chen, Weiyi
AU - Wang, Xiaobo
AU - Liu, Zhenyu
AU - Tan, Jianrong
AU - Wang, Yeqing
N1 - Publisher Copyright:
Copyright © 2020 ASME.
PY - 2020
Y1 - 2020
N2 - With the increase of wind energy production demand, the need to manufacture larger wind turbine blades is on the rise. Because of the high tip speed of the large blade, the blade could be impacted by high-speed objects such as raindrops. This research focuses on developing a computational model for analyzing wind turbine blade coating fatigue induced by raindrop impact. A stochastic rain texture model is used to simulate a realistic rain event determined by a rain intensity and a rain duration. A smoothed particle hydrodynamic approach is implemented to calculate the impact stress considering a single raindrop. A stress interpolation method is proposed to accurately and efficiently estimate the impact of stress under a random rain event. Besides, a crack growth law is used to explain the process of coating shedding. Through a method for calculating crack growth length based on stress, this paper analyzes crack growth life as a function of the rain intensity and the rain duration. This function, together with the statistics of rainfall history, provides a new approach for estimating the expected fatigue life of the blade coating.
AB - With the increase of wind energy production demand, the need to manufacture larger wind turbine blades is on the rise. Because of the high tip speed of the large blade, the blade could be impacted by high-speed objects such as raindrops. This research focuses on developing a computational model for analyzing wind turbine blade coating fatigue induced by raindrop impact. A stochastic rain texture model is used to simulate a realistic rain event determined by a rain intensity and a rain duration. A smoothed particle hydrodynamic approach is implemented to calculate the impact stress considering a single raindrop. A stress interpolation method is proposed to accurately and efficiently estimate the impact of stress under a random rain event. Besides, a crack growth law is used to explain the process of coating shedding. Through a method for calculating crack growth length based on stress, this paper analyzes crack growth life as a function of the rain intensity and the rain duration. This function, together with the statistics of rainfall history, provides a new approach for estimating the expected fatigue life of the blade coating.
KW - Coating fatigue analysis
KW - Crack growth length calculation
KW - Stochastic rain texture model
KW - Wind turbine blade
UR - http://www.scopus.com/inward/record.url?scp=85094212594&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85094212594&partnerID=8YFLogxK
U2 - 10.1115/POWER2020-16510
DO - 10.1115/POWER2020-16510
M3 - Conference contribution
AN - SCOPUS:85094212594
T3 - American Society of Mechanical Engineers, Power Division (Publication) POWER
BT - ASME 2020 Power Conference, POWER 2020, collocated with the 2020 International Conference on Nuclear Engineering
PB - American Society of Mechanical Engineers (ASME)
T2 - 2019 Canadian Society for Civil Engineering Annual Conference, CSCE 2019
Y2 - 12 June 2019 through 15 June 2019
ER -