吴江海, 朱真慧, 石杰栋, 等. 任意边界条件下输流管道振动特性分析[J]. 中国舰船研究, 2024, 19(增刊 2): 1–9. DOI: 10.19693/j.issn.1673-3185.03989
引用本文: 吴江海, 朱真慧, 石杰栋, 等. 任意边界条件下输流管道振动特性分析[J]. 中国舰船研究, 2024, 19(增刊 2): 1–9. DOI: 10.19693/j.issn.1673-3185.03989
shu
WU J H, ZHU Z H, SHI J D, et al. Vibration characteristic analysis of fluid-filled pipe with general boundary conditions[J]. Chinese Journal of Ship Research, 2024, 19(Supp 2): 1–9 (in Chinese). DOI: 10.19693/j.issn.1673-3185.03989
Citation: WU J H, ZHU Z H, SHI J D, et al. Vibration characteristic analysis of fluid-filled pipe with general boundary conditions[J]. Chinese Journal of Ship Research, 2024, 19(Supp 2): 1–9 (in Chinese). DOI: 10.19693/j.issn.1673-3185.03989
shu

任意边界条件下输流管道振动特性分析

Vibration characteristic analysis of fluid-filled pipe with general boundary conditions

    摘要
  • 摘要:
    目的 旨在开展船舶输流管道在任意边界条件下的振动噪声预报。
    方法 基于直管十四方程流固耦合模型，使用阻抗综合法建立空间管路动力学模型，并采用人工弹簧的方法在阻抗矩阵中实现任意边界条件。对空间管路固有频率进行有限元验证，并针对弹性边界刚度对管路固有频率的影响规律开展研究。最后，开展实验室中空管和充水两种状态下管路传递函数计算试验的验证分析。
    结果 结果显示，所提空间管路计算方法正确，可模拟实际工程中管路弹性安装边界；任意边界中扭转刚度的影响比剪力刚度的影响更为灵敏。
    结论 所提计算方法和研究结果可为管路系统声学设计提供参考。

     

    Abstract:
    Objectives This study seeks to carry out the vibration and noise prediction of a ship conveying pipe under arbitrary boundary conditions.
    Methods A 14-equation fluid-structure interaction model of a straight pipe is taken as the basis, the impedance synthesis method is used to establish a dynamic model of the space pipeline, and the artificial spring method is employed to realize the general boundary conditions in the impedance matrix. The finite element verification of the natural frequency of the space pipeline is carried out to further study the influence of elastic boundary stiffness on the natural frequency. Finally, the experimental verification of the transfer function calculation of the pipeline in the two states of hollow and fluid-filled is carried out in the laboratory.
    Results It is found that the method in this paper can simulate the arbitrary elastic boundaries of pipeline installation in actual engineering, and the influence of torsional stiffness is more sensitive than that of shear stiffness.
    Conclusions The calculation method and research results herein can provide valuable references for the acoustic design of pipeline systems.

     

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