کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7119993 1461458 2018 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fatigue damage assessment of wind turbine composite blades using corrected blade element momentum theory
ترجمه فارسی عنوان
ارزیابی آسیب خستگی تیغه های کامپوزیتی توربین با استفاده از تئوری شبیه سازی عنصر تیغه اصلاح شده
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی
This paper presents a method for estimating the fatigue life of composite blades of horizontal axis wind turbines, and a real blade example of the NREL 5 MW reference wind turbine is employed to verify this proposed method. First, the distributions of aerodynamic loads are analysed by new corrected blade element momentum theory, and then the aerodynamic performance of the blade under various wind speeds is assessed. The time-history of the wind speed is generated by using the Weibull distribution based on the offshore wind parameters available. The maximum stress caused by the aerodynamic loads due to wind is then calculated through the finite element analyses. The fatigue cycle during the certain time period is estimated by fast Fourier transform for the load spectrum, which converts the time-stress spectrum to stress cycles. The fatigue damage and remaining service life of wind turbine composite blades are estimated by the Goodman diagram and S-N curve for stress cycles during the service time. Finally, the remaining service life is predicted by utilising the Miner's law for linear fatigue damage accumulation. The results of the real wind turbine composite blade show that the proposed approach can provide an effective tool for evaluating the fatigue damage and assessing the structural performance of the wind turbine composite blades during the service life.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 129, December 2018, Pages 102-111
نویسندگان
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