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首页> 外文期刊>Applied Acoustics >Dynamic response of a horizontal axis wind turbine blade under aerodynamic, gravity and gyroscopic effects
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Dynamic response of a horizontal axis wind turbine blade under aerodynamic, gravity and gyroscopic effects

机译：水平轴风力发电机叶片在空气动力，重力和陀螺作用下的动态响应

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摘要

This work presents analytical and numerical dynamics studies of a horizontal axis wind turbine blade subjected to aerodynamic, centrifugal, gravity, and gyroscopic loads. The blade, assimilated to a long beam of variable cross section, is composed of homogeneous and isotropic material. It is discretized with blade elements of constant sections. Using Finite Element Method (FEM), the assembly of these elements constitutes an approximate model of the blade. The analytical study consists on defining the elementary matrices of rigidity, mass, and gyroscopic coupling between vibration and the blade rotation, as well as the elementary vector of the external loads. The numerical study deals with the resolution of the linear system of equations of the blade motion. Then, it will be possible to calculate its static and dynamic responses for a practical case. The numerical results show that the blade presents cyclic deformations under the considered loadings. These sustained vibrations directly affect the fatigue life of the blade, leading to a significant reduction in the operational efficiency of the wind turbine.
机译：这项工作提出了水平轴风力涡轮机叶片承受气动，离心，重力和陀螺负载的分析和数值动力学研究。叶片被同等截面的长梁吸收，由均质且各向同性的材料组成。离散的具有恒定截面的叶片元件。使用有限元方法（FEM），这些元素的组合构成了叶片的近似模型。分析研究包括定义振动，叶片旋转之间的刚度，质量和陀螺耦合的基本矩阵，以及外部载荷的基本矢量。数值研究涉及叶片运动方程线性系统的解析。然后，有可能针对实际情况计算其静态和动态响应。数值结果表明，在考虑的载荷作用下，叶片呈现周期性变形。这些持续的振动直接影响叶片的疲劳寿命，从而导致风力涡轮机的运行效率大大降低。

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  • 来源
    《Applied Acoustics》 |2014年第12期|154-164|共11页
  • 作者

    H. Hamdi; C. Mrad; A. Hamdi; R. Nasri;

  • 作者单位

    Department of Mechanical Engineering, Higher Institute of Technological Studies of Mednine, BP140, 4100 Mednine, Tunisia;

    Department of Mechanical Engineering, National School of Engineers of Tunis, University of Tunis El Manor, BP37, 1002 Tunis Le Belvedere, Tunisia;

    Department of Mechanical Engineering, Preparatory Institute of Engineers Studies of El Manar, University of Tunis El Manar, BP224, 2092 Tunis Le Belvedere, Tunisia;

    Department of Mechanical Engineering, National School of Engineers of Tunis, University of Tunis El Manor, BP37, 1002 Tunis Le Belvedere, Tunisia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Wind turbine blade; Aerodynamic forces; Gravity force; Dynamic response; Gyroscopic effect;

    机译：风力发电机叶片空气动力;重力动态响应;陀螺效应;

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