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两端铰接的细长柔性圆柱体涡激振动响应特性数值研究

高云 邹丽 宗智

高云, 邹丽, 宗智. 两端铰接的细长柔性圆柱体涡激振动响应特性数值研究[J]. 力学学报, 2018, 50(1): 9-20. doi: 10.6052/0459-1879-17-340
引用本文: 高云, 邹丽, 宗智. 两端铰接的细长柔性圆柱体涡激振动响应特性数值研究[J]. 力学学报, 2018, 50(1): 9-20. doi: 10.6052/0459-1879-17-340
Gao Yun, Zou Li, Zong Zhi. NUMERICAL STUDY OF RESPONSE PERFORMANCE OF VORTEX-INDUCED VIBRATION ON A FLEXIBLE CYLINDER WITH PINNED-PINNED BOUNDARY CONDITION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(1): 9-20. doi: 10.6052/0459-1879-17-340
Citation: Gao Yun, Zou Li, Zong Zhi. NUMERICAL STUDY OF RESPONSE PERFORMANCE OF VORTEX-INDUCED VIBRATION ON A FLEXIBLE CYLINDER WITH PINNED-PINNED BOUNDARY CONDITION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(1): 9-20. doi: 10.6052/0459-1879-17-340

两端铰接的细长柔性圆柱体涡激振动响应特性数值研究

doi: 10.6052/0459-1879-17-340
基金项目: 国家自然科学基金 (51609206, 51522902, 51579040), 国家留学基金 (201608515007), 青岛海洋科学与技术国家实验室开放基金 (QNLM2016OPR0402), 中央高校基本科研业务费专项资金 (DUT17ZD233) 资助项目.
详细信息
    作者简介:

    *通讯作者:高云, 副教授, 主要研究方向:海洋工程水动力学. E-mail: dutgaoyun@163.com

    通讯作者:

    高云

  • 中图分类号: O357;

NUMERICAL STUDY OF RESPONSE PERFORMANCE OF VORTEX-INDUCED VIBRATION ON A FLEXIBLE CYLINDER WITH PINNED-PINNED BOUNDARY CONDITION

  • 摘要: 目前细长柔性圆柱体涡激振动响应的研究方法主要包括实验方法、计算流体动力学方法以及半经验模型方法. 鉴于实验方法研究成本较高、计算流体动力学方法计算时间较长,本文基于尾流振子模型对线性剪切来流下两端铰接的细长柔性圆柱体涡激振动响应特性进行了半经验模型方法研究. 先建立了柔性圆柱体结构振子以及尾流振子之间的耦合模型,紧接着基于二阶精度中心差分格式对耦合模型先离散后迭代进行求解. 对不同剪切参数下柔性圆柱体涡激振动响应的振动波长、振动频率、振动位移以及响应频率随时间的变化特性等参数进行了分析. 分析结果表明:圆柱体的涡激振动响应由驻波和行波混合组成. 当无量纲弯曲刚度较小时,在圆柱体两端附近,驻波占主导;而在圆柱体中间段附近,行波占主导. 当无量纲弯曲刚度较大时,在圆柱体整个长度区间上均为驻波占主导. 随着剪切参数的增大,振动位移以及振动波长均逐渐减小,而振动频率和频率带宽均逐渐增大.

     

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出版历程
  • 收稿日期:  2017-10-11
  • 刊出日期:  2018-01-18

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