Abstract
Wind turbine has a poor working environment and suffered from Aeolian sand and rain for a long time, which results in serious damage to blade coating and greatly affects the later maintenance, the safe and stable operation of wind turbine. In this regard, this paper intends to use numerical simulation method to simulate the erosion process of blade coating under random Aeolian sand, and then study its durability in Aeolian environment. Taking Inner Mongolia as an example, the Weibull distribution wind speed model is established by using the measured wind speed data, and then the dynamic pressure, the impact load and the stress response of blade coating are obtained by FSI (Fluid Structure Interaction) analysis, finally, the fatigue life of blade coating is analyzed by nCode (nCode software). The results show that the dynamic pressure, the impact load and the stress response of blade coating is between20-140 Pa, 0.4-7.9 N and 0.4-2.79 MPa respectively. The maximum damage of blade coating is located near the leading edge of blade tip and its side, and the fatigue life of blade coating is 2.0×108 s.
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