TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








The analysis of dynamics of periodic fluid-loaded flexible tubes



Full text article ( in russian)

Year

 
2020

Issue

 
20202

Volume

 
2

Pages

 
272-275

Caption

 
The analysis of dynamics of periodic fluid-loaded flexible tubes

Authors

 
Avetisov S., Sorokin S.

Keywords

 
flexible tube, periodic inserts, running waves, standing waves, suppression of wave propagation, own frequency, waveforms.

DOI

 
10.24937/2542-2324-2020-2-S-I-272-275

Summary

 
In this report, we consider a periodic tube consisting of absolutely rigid sections alternated with soft segments of the same inner diameter under the action of a tensile force. The purpose of this analysis is to explore possibilities to suppress wave propagation using this complex tube model as a muffler. Its waveguide properties are assessed by means of a mathematical model formulated in the framework of Floquet theory and the results are compared with the eigenfrequency and eigenmode analysis of a unit symmetric periodicity cell. The setup consisting of these alternating sections creates the stop band effect, so that it may be called a ‘macroscale acoustic metamaterial’.

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ISSN (print) 2542-2324 / ISSN (online) 2618-8244

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