The dynamic behaviors of the clamped-clamped pipe conveying fluid under the harmonic exci-tation and pulsating flow are investigated by using the experimental method.The vibration experimental equipment of the clamped-clamped pipe conveying fluid is designed and made.In order to ensure that the experimental results are accurate and reliable,three pipes of different materials are selected for the ex-periments.The influences of the fluid velocity,excitation amplitude and pulsating flow frequency on the vibration characteristics of the clamped-clamped pipe conveying fluid are studied.The results show that the fluid velocity and excitation amplitude have a significant impact on the first-order resonant character-istics and vibration amplitude of the clamped-clamped pipe conveying fluid.There are the chaotic vibra-tions in the clamped-clamped pipe conveying fluid under pulsating flow.The average amplitude of the pipes decreases with the increase of the pulsation frequency.
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