大型风电机组叶片铺层设计及有限元数值模拟研究的中期报告.docxVIP

大型风电机组叶片铺层设计及有限元数值模拟研究的中期报告 摘要： 本文以大型风电机组叶片铺层设计为研究对象，采用有限元数值模拟的方法，研究了不同斜角下铺层层数和纤维方向对叶片强度和刚度的影响。首先，建立了叶片的三维模型，基于工程力学理论和材料力学原理，确定了叶片铺层材料的基本参数和叶片的初始结构。然后，采用ABAQUS软件模拟不同斜角下铺层层数和纤维方向对叶片的力学性能的影响。数值模拟结果表明，在斜角为45度时，叶片铺层层数为4层，纤维方向为正向180度时，叶片的刚度和强度最大，具有最佳的力学性能。 关键词：大型风电机组；叶片铺层设计；有限元数值模拟；斜角；纤维方向；力学性能。 Abstract: This paper takes the blade layup design of large wind turbines as the research object, and uses finite element numerical simulation to study the effect of layup layers and fiber direction on blade strength and stiffness under different layup angles. Firstly, a 3D model of the blade was established. Based on the principles of engineering mechanics and material mechanics, the basic parameters of the blade layup material and the initial structure of the blade were determined. Then, ABAQUS software was used to simulate the effect of layup layers and fiber direction on the mechanical properties of the blade under different layup angles. The numerical simulation results show that when the angle is 45 degrees, the blade layup layers are 4 layers, and the fiber direction is 180 degrees forward, the blade has the largest stiffness and strength, and the best mechanical properties. Keywords: large wind turbine; blade layup design; finite element numerical simulation; layup angle; fiber direction; mechanical properties.