Abstract
The applicability of the frequency bands-gaps to reduce the vibrations in the pipes conveying fluid is investigated by employing periodic inertial amplification mechanisms. Using the transfer matrix method, the band structures for flexural waves are calculated to study the frequency band-gap ranges and the vibration reduction. Band-gaps can exist in a piping system with fluid loading by means of the periodic inertial amplification mechanisms. Numerical results of the band-gaps of the pipe conveying fluid with periodic inertial amplification mechanisms are validated with the vibration experiments. The effects of the flow velocity, the amplification masses and the amplification angles on the band-gap properties are analyzed. It is found that the periodic inertial amplification mechanisms can enhance the vibration reduction capacity of the fluid conveying pipes.
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