Vibration Analysis and Human Comfort Evaluation of Underground Hydropower House

Dan Fu; He Gao Wu

doi:10.4028/www.scientific.net/AMM.580-583.2055

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 580-583Vibration Analysis and Human Comfort Evaluation of...

Vibration Analysis and Human Comfort Evaluation of Underground Hydropower House

Abstract:

Human comfort is of great importance to main powerhouse and vibration level should be controlled below the human comfort limit. Comparison of ISO2631/1-1985 and ISO2631/1-1997 was performed firstly in this study. It points out that weighted root-mean-square acceleration is basic variable for vibration evaluation. The reduced comfort boundary of 2 hours (0.260m/s²) in 1985 version is very close to the comfort threshold (0.315m/s²) in 1997 version. Above two values were selected as human comfort standard in this paper. After that, 3D dynamic finite element model of HongPing pumped storage station was established and vibration analysis under pressure fluctuations was conducted using time history method. The calculation results indicated that vibration of generator floor was mainly caused by the multiples of runner blade number frequency. Vibration level of generator floor would not lead to human discomfort.

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Periodical:

Applied Mechanics and Materials (Volumes 580-583)

Pages:

2055-2062

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.580-583.2055

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Online since:

July 2014

Authors:

Dan Fu, He Gao Wu*

Keywords:

Finite Element Method (FEM), Human Comfort, Hydraulic Structure, Main Powerhouse, Pressure Fluctuation, Vibration

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References

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