Edgewise fatigue dynamic simulation method and application of wind turbine blade

doi:10.19936/j.cnki.2096-8000.20220828.003

Abstract

Abstract: On the one hand, the fatigue damage of wind turbine blade is caused by the insufficient fatigue strength of the blade itself. On the other hand, it is caused by the gradual cracking of trailing edge which caused by excessive breath effect. Aimed at a large megawatt wind turbine blade, this paper simulated one of the cycles which against 2 million times edgewise fatigue cyclic load, got the dynamic response of the blade under the edgewise fatigue cycle load. At the same time, this paper extracts the blade strain time history curves and partial node displacement time history curves, and studies the fatigue strength and breathing effect. The results show that the blade structure is safe under 2 million times edgewise fatigue cyclic load. The accuracy of the calculated results was verified by the edgewise fatigue test.

Key words: fatigue damage, dynamic response, breath effect, edgewise fatigue test

CLC Number:

TB332

TANG Xue, WANG Zhen-gang, YUAN De-xuan, WANG Jian, XIE Lei. Edgewise fatigue dynamic simulation method and application of wind turbine blade[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(8): 23-27.

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