PERTURBATION-BASED FINITE ELEMENT ANALYSES OF TRANSMISSION LINE GALLOPING
Identifieur interne : 003E21 ( Main/Exploration ); précédent : 003E20; suivant : 003E22PERTURBATION-BASED FINITE ELEMENT ANALYSES OF TRANSMISSION LINE GALLOPING
Auteurs : Y. M. Desai [Canada] ; Yu A. H. Shah [Canada] ; N. Popplewell [Canada]Source :
- Journal of Sound and Vibration [ 0022-460X ] ; 1996.
Abstract
Efficient perturbation schemes are developed to compute the large amplitude, low frequency, galloping vibrations of a multi-span, overhead transmission line. Systematic procedures are formulated to assess the stability of a conductor's wind and ice loaded static profile by employing a multiple-degree-of-freedom finite element model. The use of the computationally most demanding part of the finite element analysis, namely a time marching process, is minimized by employing the averaging methods of Krylov-Bogoliubov and Galerkin. The methods are applied successfully to simulate field galloping records and their usefulness and advantages are demonstrated through illustrative examples. Alternative designs of transmission line clearances and span lengths can be assessed readily, with the help of the procedures, to achieve a cost-effective solution.
Url:
DOI: 10.1006/jsvi.1996.0135
Affiliations:
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M." last="Desai">Y. M. Desai</name><affiliation wicri:level="4"><country>Canada</country><wicri:regionArea>Faculty of Engineering, The University of Manitoba, Winnipeg, Manitoba</wicri:regionArea><orgName type="university">Université du Manitoba</orgName><placeName><settlement type="city">Winnipeg</settlement><region type="state">Manitoba</region></placeName></affiliation></author><author><name sortKey="Shah, Yu A H" sort="Shah, Yu A H" uniqKey="Shah Y" first="Yu A. H." last="Shah">Yu A. H. Shah</name><affiliation wicri:level="4"><country>Canada</country><wicri:regionArea>Faculty of Engineering, The University of Manitoba, Winnipeg, Manitoba</wicri:regionArea><orgName type="university">Université du Manitoba</orgName><placeName><settlement type="city">Winnipeg</settlement><region type="state">Manitoba</region></placeName></affiliation></author><author><name sortKey="Popplewell, N" sort="Popplewell, N" uniqKey="Popplewell N" first="N." last="Popplewell">N. Popplewell</name><affiliation wicri:level="4"><country>Canada</country><wicri:regionArea>Faculty of Engineering, The University of Manitoba, Winnipeg, Manitoba</wicri:regionArea><orgName type="university">Université du Manitoba</orgName><placeName><settlement type="city">Winnipeg</settlement><region type="state">Manitoba</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Sound and Vibration</title><title level="j" type="abbrev">YJSVI</title><idno type="ISSN">0022-460X</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1996">1996</date><biblScope unit="volume">191</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="469">469</biblScope><biblScope unit="page" to="489">489</biblScope></imprint><idno type="ISSN">0022-460X</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-460X</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Efficient perturbation schemes are developed to compute the large amplitude, low frequency, galloping vibrations of a multi-span, overhead transmission line. Systematic procedures are formulated to assess the stability of a conductor's wind and ice loaded static profile by employing a multiple-degree-of-freedom finite element model. The use of the computationally most demanding part of the finite element analysis, namely a time marching process, is minimized by employing the averaging methods of Krylov-Bogoliubov and Galerkin. The methods are applied successfully to simulate field galloping records and their usefulness and advantages are demonstrated through illustrative examples. Alternative designs of transmission line clearances and span lengths can be assessed readily, with the help of the procedures, to achieve a cost-effective solution.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Manitoba</li></region><settlement><li>Winnipeg</li></settlement><orgName><li>Université du Manitoba</li></orgName></list><tree><country name="Canada"><region name="Manitoba"><name sortKey="Desai, Y M" sort="Desai, Y M" uniqKey="Desai Y" first="Y. M." last="Desai">Y. M. Desai</name></region><name sortKey="Popplewell, N" sort="Popplewell, N" uniqKey="Popplewell N" first="N." last="Popplewell">N. Popplewell</name><name sortKey="Shah, Yu A H" sort="Shah, Yu A H" uniqKey="Shah Y" first="Yu A. H." last="Shah">Yu A. H. Shah</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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