Fluid-solid coupling analysis for the two cantilever pipes on vibration foundation

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (14) : 183-187.

WANG Bin-hua

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Abstract

Dynamic equation of the two cantilever pipes on vibration foundation is set up based on flexible multi-body dynamic theory and fluid-solid couple theory by using the Lagrange equation of cantilever pipe. Simulation analysis is carried out under different attitudes, different mean flow velocity and different pipe length parameters. The analysis results show that the pipe attitude and length parameter have significant effects on vibration response. The vibration excitation is apparently enhanced with the increase of mean flow velocity and the vibration system in the horizontal posture has the higher steady flow rate. Because the pipe length parameters have great effect on bending moment between pipes, the optimization design of pipe length should be performed in order to decrease the control force in the process of vibration control design. The test system of two cantilever pipes is designed. At the same time, the experiments are used to prove that the dynamic equation used in the paper is accuracy. It provides good theories of active control research on two cantilever pipes.

Key words

two cantilever pipes；vibration foundation；fluid-solid coupling analysis；experimental study / simulation analysis

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WANG Bin-hua. Fluid-solid coupling analysis for the two cantilever pipes on vibration foundation[J]. Journal of Vibration and Shock, 2015, 34(14): 183-187

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