Fatigue life prediction for the main spar with wrinkle defects of a wind turbine blade

2021 ◽  
Author(s):  
Fangai Yu ◽  
Bo Zhou ◽  
Wen Xin ◽  
Xueyan Zhang
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Life Prediction ◽  
Wind Turbine Blade ◽  
Fatigue Life Prediction

Dynamic prediction fatigue life of composite wind turbine blade

2015 ◽  
Vol 18 (3) ◽  
pp. 673-691 ◽  
Author(s):  
Samir Lecheb ◽  
Abdelkader Nour ◽  
Ahmed Chellil ◽  
Hamza Mechakra ◽  
Hicham Ghanem ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Dynamic Prediction

A Method of Estimating Wind Turbine Blade Fatigue Life and Damage using Continuum Damage Mechanics

2011 ◽  
Vol 21 (6) ◽  
pp. 810-821 ◽  
Author(s):  
A. Movaghghar ◽  
G. I. Lvov
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Damage Mechanics ◽  
Elastic Strain Energy ◽  
Continuum Damage Mechanics ◽  
Wind Turbine Blade ◽  
Mode Shapes ◽  
Ansys Analysis ◽  
Natural Resonance Frequency

In this article, an energy-based model for predicting fatigue life and evaluation of progressive damage in a full composite wind turbine blade is proposed. Itis based on the assumption that the damage growth rate in a composite material depends on the maximum value of elastic strain energy per cycle. Design, finite element modeling, and dynamic analysis of the blade have been performed using ANSYS software. The first five natural frequencies and mode shapes of the blade were calculated and dangerous nodes in the critical location were determined using the modal and harmonic analysis techniques. Obtaining critical stresses from ANSYS analysis, fatigue life of the blade at the first natural resonance frequency was estimated by the model. Results showed that the calculated life of the analyzed blade could meet the design requirement.

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