Nonlinear Stability of the Lateral Vibration of a Fluid-Conveying Pipe

流体输送管道横向振动的非线性稳定性

• 批准号: 09650277
• 负责人: YOSHIZAWA Masatsugu
• 金额: $ 1.98万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650277/
• 关键词: Nonlinear Dynamics; Cantilevered Pipe; Lumped Mass; Flow-Induced Vibration; Nonplanar; Horizontal Excitation; Qualitative Analysis; Experiment; 非線形力学解析; 流体関連振動; 弾性送水管; 面外横振動; 面内横振動; 引き込み現象; 三次元計測

In this paper, the nonlinear lateral vibrations of a cantilevered pipe, which is hung vertically with an end mass and conveys fluid, are examined theoretically and experimentally under the supercritical condition that planar and nonplanar pipe vibrations are self-excited due to an internal flow above the critical velocity.First, the effect of an end mass on the pipe vibration is discussed theoretically with the nonlinear coupled equations of the lateral deflections of the pipe. Second. the experiments were conducted with a silicon rubber pipe conveying water. The spatial behaviors of the fluid-conveying pipe were observed by means of the image-processing system based on the images from two CCD cameras.Furthermore it is examined for the case that the upper end of the pipe is excited periodically in a horizontal direction.

本文从理论和实验两方面研究了在平面和非平面管道由于超过临界速度的内部流动而产生自激振动的超临界条件下，端部有质量垂直悬挂输送流体的悬臂管道的非线性横向振动。首先，利用管道横向挠度的非线性耦合方程，从理论上讨论了端部质量对管道振动的影响。第二。实验采用硅橡胶输水管道进行。利用基于两台CCD摄像机的图像处理系统，对输送管道的空间行为进行了观测。此外，还研究了管道上端在水平方向上周期性激励的情况。

项目成果

Masatsugu YOSHIZAWA: "Nonlinear Lateral Vibration of a Vertical-Fluid-Conveying Pipe with End Mass" JSME International Journal. C41-3. 652-661 (1998)

Masatsugu YOSHIZAWA：“具有末端质量的垂直流体输送管道的非线性横向振动”JSME 国际期刊。

M.YOSHIZAWA: "Nonlinear Lateral Vibration of a Vertical Fluid Conveying Pipe with End Mass with End Mass (Effect of Horizontal Excitation at the Upper End)" Proceedings 4-th International Sympojium on FSI,AE & FIV+N,Dallas TX,U.S.A.Vol.1 (New York : ASME)

M.YOSHIZAWA：“带有末端质量的垂直流体输送管的非线性横向振动（上端水平激励的影响）”第四届 FSI、AE 国际研讨会论文集

M.YOSHIZAWA: "Nonlinear Lateral Vibration of a Vertical Fluid Conveying Pipe with End Mass" JSME International Journal. 41-3. 144-153 (1998)

M.YOSHIZAWA：“具有端部质量的垂直流体输送管的非线性横向振动”JSME 国际期刊。

Masatsugu Yoshizawa: "Noplinear Lateral Vibration of a Fertical Fluid-Comeying Pipe with End Mass" Proccoding of 4th Int.Symp.on Fluid-Structore Interactions,Aeroelasticity,How-Liduced Vibration and Noise.AD-Vol.53-1. 281-288 (1997)

Masatsugu Yoshizawa：“具有端部质量的流体流动管道的非线性横向振动”第四届 Int.Symp.on 流体-结构相互作用、气动弹性、如何引起的振动和噪声的 Proccoding.AD-Vol.53-1。

Masatsugu YOSHIZAWA: "Nonlinear Lateral Vibration of a Vertical Fluid Conveying Pipe with End Mass (Effect of Horizontal Excitation)" 4th Int.Symp.on Fluid-Structure Interactions and Noise(Vol.1). AD53-1. 281-288 (1997)

Masatsugu YOSHIZAWA：“带有末端质量的垂直流体输送管的非线性横向振动（水平激励的影响）”第四届 Int.Symp.on 流固耦合和噪声（Vol.1）。