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Eigen Frequencies of A Vertical Axis Wind Turbine Tower Made of Laminated Wood and the Effect Upon Attaching Guy Wires

机译:叠层木结构垂直轴风力发电机塔的本征频率及其对拉线的影响

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摘要

Eigen frequencies of a vertical axis wind turbine tower made out of laminated wood which are both bolted to the ground and supported by guy wires are studied and compared. Using beam theory, an analytical model taking the guy wires into account for calculating the first mode eigen frequency of the tower has been derived. The analytical model is then evaluated by comparing with FEM-simulations and measurements performed on the actual tower. The model is found to be reasonably accurate keeping in mind that the estimated masses and second moments of area are somewhat rough. Furthermore the model can be used to give an indication of the magnitude of change in eigen frequency when modifying a tower or guy wire property.
机译:研究并比较了用层压木制成的垂直轴风力涡轮机塔架的本征频率,这些塔架既用螺栓固定在地面上,又用拉索支撑。利用梁理论,推导了考虑拉索的解析模型,用于计算塔架的第一模本征频率。然后,通过与有限元模拟和实际塔架上进行的测量进行比较,来评估分析模型。考虑到估计的质量和区域的第二矩有些粗糙,因此该模型被认为是相当准确的。此外,当修改铁塔或拉线的特性时,该模型可用于指示本征频率变化的幅度。

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  • 来源
    《Wind Engineering》 |2014年第3期|277-289|共13页
  • 作者单位

    School of Business and Engineering, Halmstad University, PO Box 823, SE-301 18 Halmstad, Sweden,Division for Electricity, Department of Engineering Sciences, Uppsala University, PO Box 534, SE- 751 21 Uppsala, Sweden;

    School of Business and Engineering, Halmstad University, PO Box 823, SE-301 18 Halmstad, Sweden;

    School of Business and Engineering, Halmstad University, PO Box 823, SE-301 18 Halmstad, Sweden;

    Division for Electricity, Department of Engineering Sciences, Uppsala University, PO Box 534, SE- 751 21 Uppsala, Sweden;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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