Theoretical Analysis on Dynamic Stability of Rotating Pipes Conveying Fluid

ZHANG Bo; SHI Tianzi; ZHANG Yilin; SUN Dongsheng; YUAN Congmin; DING Hu; CHEN Liqun

doi:10.21656/1000-0887.420135

Volume 43 Issue 2

Feb. 2022

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Article Navigation > Applied Mathematics and Mechanics > 2022 > 43(2): 166-175

ZHANG Bo, SHI Tianzi, ZHANG Yilin, SUN Dongsheng, YUAN Congmin, DING Hu, CHEN Liqun. Theoretical Analysis on Dynamic Stability of Rotating Pipes Conveying Fluid[J]. Applied Mathematics and Mechanics, 2022, 43(2): 166-175. doi: 10.21656/1000-0887.420135

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Theoretical Analysis on Dynamic Stability of Rotating Pipes Conveying Fluid

doi: 10.21656/1000-0887.420135

1.
School of Sciences, Chang’an University, Xi’an 710064, P.R.China
2.
Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, P.R.China
3.
Taishan Nuclear Power Joint Venture Co. , Ltd. , Taishan, Guangdong 529228, P.R.China

Received Date: 2021-06-17
Accepted Date: 2021-06-17
Rev Recd Date: 2021-07-03

Available Online: 2021-12-30

Publish Date: 2022-02-01

Abstract

Abstract

The dynamic model was built for rotating pipes conveying fluid based on the Lagrange principle and the assumed mode method. The eigenvalue problem of the system was solved via the method of “reducing the order and increasing the dimension”. The free vibration characteristics of the rotating pipe conveying fluid were analyzed. The variations of the eigenvalue trajectories with the fluid velocity were illustrated under different tip masses and rotating speeds. The effects of system parameters on the critical fluid velocity were revealed. It is found that, the flowing fluid has significant effects on the dynamic characteristics of the rotating pipe. Different internal resonances between the 1st several modes of the system could exist under certain parameter conditions. The work reveals rich dynamic phenomena of the rotating pipe conveying fluid.
- rotation,
- pipe conveying fluid,
- free vibration,
- assumed mode method,
- Lagrange equation

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References(33)

References

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