Vibration Analysis for Pipeline Connected with Centrifugal Pump by FEM

Jun Hua Dong; Xiang Fu Bao; Peng Bo Xie

doi:10.4028/www.scientific.net/AMR.479-481.1237

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 479-481Vibration Analysis for Pipeline Connected with...

Vibration Analysis for Pipeline Connected with Centrifugal Pump by FEM

Abstract:

The vibration of a complicated pipeline connected with centrifugal pump has been studied by ANSYS. The first 32 natural frequencies and the first five modal shape of the pipeline system is obtained by Modal analysis. The result shows that its excited frequency is close to the 30th natural frequency of the pipeline system，which will result in resonance. Because excited force caused by pulsatile fluid in pipe can make pipeline to has a compulsive vibrations, harmonic respones analysis is used to determine continuous dynamic characteristics of pipeline. The critical frequencies of node with the maximal amplitude at 30th modal shape are 12.452Hz and 56.284Hz by investigating its spectrum image of displacement. The major principal stress at two critical frequencies, far exceeding the yield strength of material, is respectively -1223MPa and 621 MPa, which demonstrates that the pipeline are very incidental to be destroyed.

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Periodical:

Advanced Materials Research (Volumes 479-481)

Pages:

1237-1242

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.479-481.1237

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Online since:

February 2012

Authors:

Jun Hua Dong, Xiang Fu Bao, Peng Bo Xie

Keywords:

ANSYS, Harmonic Response Analysis, Modal Analysis, Pipe, Vibration

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