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圆柱体双自由度涡激振动轨迹的模型试验

康庄 贾鲁生

康庄, 贾鲁生. 圆柱体双自由度涡激振动轨迹的模型试验[J]. 力学学报, 2012, 44(6): 970-980. doi: 10.6052/0459-1879-12-120
引用本文: 康庄, 贾鲁生. 圆柱体双自由度涡激振动轨迹的模型试验[J]. 力学学报, 2012, 44(6): 970-980. doi: 10.6052/0459-1879-12-120
Kang Zhuang, Jia Lusheng. AN EXPERIMENT INVESTIGATION ON VIV TRAJECTORIES OF A TWO DEGREE FREE VIBRATION CYLINDER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(6): 970-980. doi: 10.6052/0459-1879-12-120
Citation: Kang Zhuang, Jia Lusheng. AN EXPERIMENT INVESTIGATION ON VIV TRAJECTORIES OF A TWO DEGREE FREE VIBRATION CYLINDER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(6): 970-980. doi: 10.6052/0459-1879-12-120

圆柱体双自由度涡激振动轨迹的模型试验

doi: 10.6052/0459-1879-12-120
基金项目: 国家自然科学基金(51009033)和中央高校基本科研业务费资助项目.
详细信息
    通讯作者:

    康庄

  • 中图分类号: P756.2

AN EXPERIMENT INVESTIGATION ON VIV TRAJECTORIES OF A TWO DEGREE FREE VIBRATION CYLINDER

Funds: The project was supported by the National Natural Science Foundation of China (51009033) and the Fundamental Research Funds for the Central Universities.
  • 摘要: 对水平放置的直径 5cm,长120cm的圆柱体开展了双自由度涡激振动模型试验研究. 试验中发现,圆柱体在顺流向上的振动频率表现为"多频"的现象,即不光有2倍横向振动的频率,在某些振动固有频率和约化速度的条件下,还出现了单倍横向振动的频率,从而使圆柱体的轨迹呈现出"卵"形以及"雨滴"形等明显异于传统"8"字形与"新月"形的运动轨迹. 此外,通过研究初步得到了各种其他形式的振动轨迹向"8"字形变化的趋势,并认为不同的横向、顺流向振动固有频率以及流速是导致圆柱体涡激振动轨迹产生多种形式的主要原因.

     

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出版历程
  • 收稿日期:  2012-05-04
  • 修回日期:  2012-06-07
  • 刊出日期:  2012-11-18

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