Influence of torsional stiffness on the galloping instability of a low-voltage insulated power line

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00600492" target="_blank" >RIV/68378297:_____/24:00600492 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Influence of torsional stiffness on the galloping instability of a low-voltage insulated power line
Original language description
Our research contribution focuses on a three-dimensional nonlinear numerical study of the galloping phenomenon in a specific bundled overhead power line affected by ice accumulation. We investigated the susceptibility to this self-induced oscillatory behavior at critical wind speeds necessary to initiate the dynamic response in a low-tension cable with simulated icing that parallels observations on analogous real-world conductors. Given the highly nonlinear mechanical properties of such flexible cables, we employed the Newmark integration technique in conjunction with the iterative Newton-Raphson approach. We analyzed two numerical models of the overhead line under wind loading: one assumes linear mechanical behavior under nonlinear wind loading, while the other incorporates full nonlinearity, including geometrical aspects. Our study assessed the impact of torsional stiffness on galloping instability, finding that considering torsional stiffness and the three-dimensional movement of cables under wind can amplify the dynamic response during galloping.
Czech name
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Czech description
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Project
<a href="/en/project/GA24-13061S" target="_blank" >GA24-13061S: The Combined Effects of Aeroelastic Instabilities on Civil Engineering Structures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Computational mechanics 2024. Proceedings of computational mechanics 2024
ISBN
978-80-261-1249-5
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
79-82
Publisher name
University of West Bohemia
Place of publication
Plzeň
Event location
Srní
Event date
Nov 4, 2024
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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