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운전하중 조건에서 소형 풍력 발전기용 사출 나선형 블레이드 구조특성 평가
길영욱(Young-Uk Gil),조영관(Young-Kwan Jo),지호성(Ho-Seong Ji),양형근(Hyoung-Keun Yang),백준호(Joon-Ho Baek),제덕근(Duk-Geun Je),정호승(Ho-Seung Jeong),박상후(Sang-Hu Park) 한국기계가공학회 2020 한국기계가공학회지 Vol.19 No.2
The purpose is to evaluate the structural characteristics of 750 mm diameter injection spiral blades under various operating conditions. A fiber-glass reinforced polypropylene material was employed to the injection blades, and mechanical tests on two kinds of glass-reinforced polypropylene were performed to evaluate the mechanical properties and to select a suitable candidate material. Also, three kinds of spiral blade geometries were studied to observe the influence of fixing rods between blades. For this, structural analyses were conducted to understand the role of fixing rods under a range of rotating speed. In addition, modal analysis was performed to confirm the resonance in the operating speed range. One-way fluid-structure interaction (FSI) analysis was carried out to know its mechanical integrity under dangerous wind speed conditions. Through this work, the structural characteristics of the proposed spiral blade geometries were studied under various operating conditions, and the requirements of mechanical properties of blades were determined.