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含集中质量悬臂输流管的稳定性与模态演化特性研究

易浩然 周坤 代胡亮 王琳 倪樵

易浩然, 周坤, 代胡亮, 王琳, 倪樵. 含集中质量悬臂输流管的稳定性与模态演化特性研究[J]. 力学学报, 2020, 52(6): 1800-1810. doi: 10.6052/0459-1879-20-280
引用本文: 易浩然, 周坤, 代胡亮, 王琳, 倪樵. 含集中质量悬臂输流管的稳定性与模态演化特性研究[J]. 力学学报, 2020, 52(6): 1800-1810. doi: 10.6052/0459-1879-20-280
Yi Haoran, Zhou Kun, Dai Huliang, Wang Lin, Ni Qiao. STABILITY AND MODE EVOLUTION CHARACTERISTICS OF A CANTILEVERED FLUID-CONVEYING PIPE ATTACHED WITH THE LUMPED MASS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(6): 1800-1810. doi: 10.6052/0459-1879-20-280
Citation: Yi Haoran, Zhou Kun, Dai Huliang, Wang Lin, Ni Qiao. STABILITY AND MODE EVOLUTION CHARACTERISTICS OF A CANTILEVERED FLUID-CONVEYING PIPE ATTACHED WITH THE LUMPED MASS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(6): 1800-1810. doi: 10.6052/0459-1879-20-280

含集中质量悬臂输流管的稳定性与模态演化特性研究

doi: 10.6052/0459-1879-20-280
基金项目: 1) 国家自然科学基金资助项目(11972167);国家自然科学基金资助项目(11622216)
详细信息
    作者简介:

    2) 代胡亮, 副教授, 主要研究方向: 非线性动力学, 流固耦合振动控制. E-mail: daihulianglx@hust.edu.cn

    通讯作者:

    代胡亮

  • 中图分类号: O322

STABILITY AND MODE EVOLUTION CHARACTERISTICS OF A CANTILEVERED FLUID-CONVEYING PIPE ATTACHED WITH THE LUMPED MASS

  • 摘要: 本文主要研究通过调控集中质量对悬臂输流管稳定性和振动模态特性的影响规律,为输流管动力学性能的可控性提供理论指导和实验依据. 首先基于扩展的哈密顿原理,建立了含集中质量悬臂输流管的非线性动力学理论模型. 基于线性动力学特性分析,研究发现集中质量沿管道轴向位置变化对输流管发生颤振失稳的临界流速有重要影响.并通过伽辽金前四阶模态截断处理线性矩阵方程式,定性地分析了集中质量位置与质量比的变化对于输流管稳定性影响的变化.实验结果表明, 输流管的颤振失稳模态随集中质量位置的变化发生了转迁. 此外,基于动力学理论分析, 发现集中质量比值对失稳临界流速也有重要的影响,且主要取决于集中质量的安装位置. 基于非线性特性,进一步分析了集中质量对输流管振动幅值的影响. 实验和理论研究发现,集中质量位置从固定端向自由端变化时, 输流管振幅表现出先增大后减小趋势,且振动模态也从二阶转迁到三阶.本研究有望为输流管振动驱动应用提供理论支撑与指导意义.

     

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出版历程
  • 收稿日期:  2020-08-11
  • 刊出日期:  2020-12-10

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