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Research on mechanism of the large-amplitude and narrow-band vibration of a flexible flat plate in the rectangular channel

机译:矩形通道中柔性平板的大振幅和窄带振动机理研究

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摘要

Further experiments and theoretical analysis were performed to investigate mechanism of the large-amplitude and narrow-band vibration behavior of a flexible flat plate in a rectangular channel. Test plates with different thicknesses were adopted in the FIV experiments. The natural vibration characteristics of the flexible flat plates in air were tested, and the added mass theory of column was used to analyze the flexible flat plates' natural vibration characteristics in static water. It was found that the natural vibration frequency of a certain test plate in static water is approximately within the main vibration frequency band of the plate when it was induced to vibrate with the large-amplitude and narrow-band in the rectangular channel. It can be concluded that the harmonic between the flowing fluid and the vibrating plate is one of the key reasons to induce the large-amplitude and narrow-band vibration phenomenon. The occurring condition of the phenomenon and some important narrow-band vibration characteristics of a foursquare fix-supported flexible flat plate were investigated.
机译:进行了进一步的实验和理论分析,以研究矩形通道中柔性平板的大振幅和窄带振动行为的机理。 FIV实验采用了不同厚度的测试板。测试了柔性平板在空气中的自然振动特性,并利用柱的附加质量理论分析了静态水中柔性平板的自然振动特性。发现在静水中,某试验板的固有振动频率大约在该板的主振动频带内,当它在矩形通道中以大振幅和窄带振动时。可以得出结论,流体与振动板之间的谐波是引起大振幅和窄带振动现象的关键原因之一。研究了该现象的发生条件以及四方固定支撑柔性平板的一些重要的窄带振动特性。

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  • 来源
    《Nuclear Engineering and Design》 |2012年第9期|p.560-566|共7页
  • 作者

    Lifang Liu; Daogang Lu;

  • 作者单位

    State Nuclear Power Software Development Center, Building 7, Compound No. 29, North Third Ring Road, Xicheng District, Beijing 100029, PR China School of Nuclear Science and Engineering, North China Electric Power University, Zhuxinzhuang, Dewai, Beijing 102206, PR China;

    School of Nuclear Science and Engineering, North China Electric Power University, Zhuxinzhuang, Dewai, Beijing 102206, PR China;

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

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