Wave attenuation of a pre-tensioned wire with periodic spring supports subjected to a moving force

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F20%3A00537191" target="_blank" >RIV/68378297:_____/20:00537191 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1142/S0219455420710091" target="_blank" >https://doi.org/10.1142/S0219455420710091</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S0219455420710091" target="_blank" >10.1142/S0219455420710091</a>

Result language

angličtina

Original language name

Wave attenuation of a pre-tensioned wire with periodic spring supports subjected to a moving force

Original language description

The pantograph-catenary system is essential to the operation of modern railways. The overhead catenary system serves to deliver steady electric power to the trains running on the railways. The propagation of waves in the catenary system can be significantly affected by its interaction with the pantograph. To investigate the wave transmission via the contact wires of a catenary system, a simplified model composed of a pre-Tensioned wire suspended by periodic spring supports is adopted. For a periodic structure with wider band gaps (or stop bands), a larger cluster of frequencies of the transmitting waves can be filtered out. This is beneficial to the maintenance of the catenary system as unwanted vibrations have been reduced. To widen the band gaps, a resonator can be equipped on each of the spring supports for attenuation of a wider range of transmitting waves in the pre-Tensioned wire. In this study, a unit cell conceived as the spring-resonator-wire unit is adopted to formulate the dispersion equation in closed form, from which the critical condition for widening the band gaps is derived. In addition, the moving pantograph is modeled as a moving force. From the exemplar study, it was shown that the installation of proper resonators on a catenary system can increase the gap bandwidth, such that the pantograph-induced wave transmission in the contact wires will be attenuated or filtered out.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20101 - Civil engineering

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

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Structural Stability and Dynamics

ISSN

0219-4554

e-ISSN

—

Volume of the periodical

20

Issue of the periodical within the volume

11

Country of publishing house

SG - SINGAPORE

Number of pages

12

Pages from-to

2071009

UT code for WoS article

000586596900015

EID of the result in the Scopus database

2-s2.0-85092508505