Wave attenuation in a pre-tensioned string with periodic spring supports
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F22%3A00575112" target="_blank" >RIV/68378297:_____/22:00575112 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/978-3-030-79325-8_23" target="_blank" >http://dx.doi.org/10.1007/978-3-030-79325-8_23</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-030-79325-8_23" target="_blank" >10.1007/978-3-030-79325-8_23</a>
Alternative languages
Result language
angličtina
Original language name
Wave attenuation in a pre-tensioned string with periodic spring supports
Original language description
The overhead catenary system is a crucial conductor for delivering steady electric power to the trains running on modern electrified railways. The propagation of vibration waves in the catenary system is of interest to railway engineers due to the pantograph-catenary interaction. To explore the wave transmission via the contact wires of a catenary system supported by hanging devices offered by the bracket structures, a simplified model composed of a pre-tensioned string periodically suspended by hanging springs is adopted. For a periodic structure with wider band gaps, also known as stop bands, a wider cluster of frequencies ofwaves propagating in the periodic structure can be attenuated (or filtered out). This will be beneficial to the maintenance of the catenary system. To take advantage of such a feature, a resonator is usually equipped on each of the hanging spring supports so as to widen band gaps for better attenuation of the waves transmitted in the pre-tensioned string. In this study, a unit cell conceived as a spring-resonator-string unit is adopted to formulate the closed-form dispersion equation, from which the key condition for widening the band gaps is derived. From the exemplar study, it was shown that the installation of adjustable resonators on a catenary system can increase the band gap width, serving as a wave filter for attenuating the pantograph-induced wave transmission in the contact wires of the pantograph-catenary system.
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
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OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering
Result continuities
Project
<a href="/en/project/GC17-26353J" target="_blank" >GC17-26353J: Theoretical predictive models of interaction between varying and moving loads and bridges for structural health monitoring</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Dynamics and control of advanced structures and machines
ISBN
978-3-030-79324-1
Number of pages of the result
9
Pages from-to
265-273
Number of pages of the book
273
Publisher name
Springer
Place of publication
Cham
UT code for WoS chapter
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