中文摘要：

为研究腹板铺层参数对风力机叶片结构性能的影响。以某1.5 MW水平轴风力机叶片为研究对象,基于有限元分析方法,利用ANSYS软件中梁单元模拟腹板铺层,保持叶片前缘、后缘以及梁帽的铺层形式不变,通过改变腹板铺层角度、顺序和不同铺层角度的层数占整个铺层层数的比例,得到多种研究方案,并对不同方案时的叶片进行模态分析。结果表明：腹板±45°铺层较其他铺层角度能够更好的承受剪切载荷;腹板铺层角度应以±45°为主,且±45°铺层占整个铺层的58%左右时叶片结构性能最好;为了减小各层之间的剪切应力,应避免0°铺层和90°铺层连续铺放。

英文摘要：

The effect of the beam ply parameters on structure performance of wind turbine blade has been studied. Based on the finite element method, a 1.5 MW horizontal axis wind turbine blade was chosen as the research object. Beam ply was simulatedby using beam element in ANSYS software. Keeping the ply form of blade leading edge, trailing edge and the cap, a variety of research plansweregottenby changing the angle and order of beam ply or the proportion of layer number of different ply angle in whole layer number. Modal analysis was carried out on the blades of different solutions. The results show that the beam with plus or minus 45° ply will be able to bear shearing load better than other ply angle. Ply angle should be given priority to theuseof plus or minus 45°. The blade structure performance is best when plus or minus 45° ply accounts for around 58% of the whole ply. In order to reduce shear stress between the layers, 0° ply and 90° layer continuous plyshould be avoided.