CAJ | 학술논문

针对水平轴风力机桨叶片，在结冰条件下进行了三维有限元模态仿真，并对桨叶片结冰后是否能引起桨叶片结构共振进行分析，对桨叶片固有频率进行了对比。根据研究内容，首先确定桨叶片的几何参数，并通过 Pro/E 软件绘制叶片的三维实体图。主要通过 Fluent 软件对三维桨叶片进行结冰模拟，之后采用 ANSYS 结构分析软件对结冰后的桨叶片进行仿真，提出分块法 Block Lanczos 对叶片进行重力预应力模态分析，应用多体动力学的方法，材质采用玻璃钢，确定叶片的各阶模态振型、频率、最大变形量，得出了叶片的前10阶模态数值与分析结果，并对结果进行了分析比较。结果显示结冰后叶片的主要振动形式为摆振和挥舞，有较强的抗扭转能力，设计中应加强叶片的弯曲刚度，这为风力机叶片的设计和优化提供了参考。
침대수평축풍력궤장협편，재결빙조건하진행료삼유유한원모태방진，병대장협편결빙후시부능인기장협편결구공진진행분석，대장협편고유빈솔진행료대비。근거연구내용，수선학정장협편적궤하삼수，병통과 Pro/E 연건회제협편적삼유실체도。주요통과 Fluent 연건대삼유장협편진행결빙모의，지후채용 ANSYS 결구분석연건대결빙후적장협편진행방진，제출분괴법 Block Lanczos 대협편진행중력예응력모태분석，응용다체동역학적방법，재질채용파리강，학정협편적각계모태진형、빈솔、최대변형량，득출료협편적전10계모태수치여분석결과，병대결과진행료분석비교。결과현시결빙후협편적주요진동형식위파진화휘무，유교강적항뉴전능력，설계중응가강협편적만곡강도，저위풍력궤협편적설계화우화제공료삼고。
In this paper,a three-dimensional finite element model of the blade of wind turbine with horizontal axis was carried out under the icing conditions.The resonance of impeller blade structure was analyzed under the icing conditions and the natural fre-quency of blade was compared.According to the research content,the geometric parameters of the impeller blades were deter-mined,and the 3D solid drawing of the blades was performed using the Pro/E software.The Fluent software was used to simu-late the icing conditions of three-dimensional blade,and the ANSYS structure analysis software was used to simulate the frozen blade.The Lanczos Block was used to perform the analysis of gravitational preload of the blade.The multi-body dynamics meth-od was used to determine the vibration type,mode,and maximum displacement of each order of blade.The numerical simulation and analysis results of the first 10-order of blade were obtained and compared.The results showed that the main vibration mode of the blade is shimmy and waving,and the blade has a strong resistance ability to torsion.Therefore,the design of blade should strengthen the bending rigidity,which provides reference for the design and optimization of wind turbine blade.