EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE

Detalhes bibliográficos
Autor(a) principal: Barreto Andrade, Thierre Victor
Data de Publicação: 2023
Outros Autores: Ribeiro Begnini, Guilherme
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista Interdisciplinar de Pesquisa em Engenharia
Texto Completo: https://periodicos.unb.br/index.php/ripe/article/view/46861
Resumo: Modal analysis of horizontal axis wind turbines is becoming more important due to the increase in blade and tower dimensions, making the whole assembly more flexible and susceptible to vibration problems. Due to the slender characteristics of the blade and tower, they are typically modelled as cantilever beams, with the aid of the Finite Element Method. The objective of this paper is to investigate the natural frequencies of the DTU 10MW Reference Wind Turbine (composed of three blades and the tower) under the influence of tower and blades pre-stiffening. Tower pre-stiffening is due to the significant weight of the blades and the hub supported by the tower, resulting in tower compression loads. Blades pre-stiffening are due to the centrifugal loads acting on the rotating blades, thus depending on the rotation speed. The results are computed using the commercial software Altair® HyperWorks® and compared to the baseline results provided by the literature. It was found a maximum reduction of about 2% in the natural frequencies due to the tower pre-stiffening (for the 1st and 2nd modes) and maximum reductions varying from about 7% to 21% due to blades pre-stiffening (for the 1st mode), considering the minimum and maximum operational rotation speeds.
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spelling EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINEEfeito do pré-tensionamento da torre e das pás nas frequências naturais da turbina eólica de referência DTU 10MWWind TurbinesModal AnalysisFinite Element MethodPre-StiffeningTurbina EólicaAnálise ModalMétodo dos Elementos FinitosPré-tensionamentoModal analysis of horizontal axis wind turbines is becoming more important due to the increase in blade and tower dimensions, making the whole assembly more flexible and susceptible to vibration problems. Due to the slender characteristics of the blade and tower, they are typically modelled as cantilever beams, with the aid of the Finite Element Method. The objective of this paper is to investigate the natural frequencies of the DTU 10MW Reference Wind Turbine (composed of three blades and the tower) under the influence of tower and blades pre-stiffening. Tower pre-stiffening is due to the significant weight of the blades and the hub supported by the tower, resulting in tower compression loads. Blades pre-stiffening are due to the centrifugal loads acting on the rotating blades, thus depending on the rotation speed. The results are computed using the commercial software Altair® HyperWorks® and compared to the baseline results provided by the literature. It was found a maximum reduction of about 2% in the natural frequencies due to the tower pre-stiffening (for the 1st and 2nd modes) and maximum reductions varying from about 7% to 21% due to blades pre-stiffening (for the 1st mode), considering the minimum and maximum operational rotation speeds.A análise modal de aerogeradores de eixo horizontal está se tornando mais importante devido ao aumento das dimensões das pás e torres, tornando todo o conjunto mais flexível e suscetível a problemas de vibração. Devido às características esbeltas da pá e da torre, elas são tipicamente modeladas como vigas em balanço, com auxílio do Método dos Elementos Finitos. O objetivo deste trabalho é investigar as frequências naturais da Turbina Eólica de Referência DTU 10MW (composta por três pás e a torre) sob a influência do pré-tensionamento da torre e das pás. O pré-tensionamento da torre é devido ao peso significativo das pás e do cubo suportado pela torre, resultando em cargas de compressão. O pré-tensionamento das pás é devido às cargas centrífugas que atuam nas pás rotativas, dependendo da velocidade de rotação. Os resultados são calculados usando o software comercial Altair® HyperWorks® e comparados com os resultados de referência fornecidos pela literatura. Constatou-se uma redução máxima de cerca de 2% nas frequências naturais devido ao pré-tensionamento da torre (para o 1º e 2º modos) e reduções máximas variando de cerca de 7% a 21% devido ao pré-tensionamento das pás (para o 1º modo), considerando as velocidades de rotação operacional mínima e máxima.Programa de Pós-Graduação em Integridade de Materiais da Engenharia2023-01-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.unb.br/index.php/ripe/article/view/46861Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 8 No. 2 (2022): Revista Interdisciplinar de Pesquisa em Engenharia ; 52-61Revista Interdisciplinar de Pesquisa em Engenharia; v. 8 n. 2 (2022): Revista Interdisciplinar de Pesquisa em Engenharia ; 52-612447-6102reponame:Revista Interdisciplinar de Pesquisa em Engenhariainstname:Universidade de Brasília (UnB)instacron:UNBporhttps://periodicos.unb.br/index.php/ripe/article/view/46861/36269Copyright (c) 2023 Revista Interdisciplinar de Pesquisa em Engenhariahttps://creativecommons.org/licenses/by-nd/4.0info:eu-repo/semantics/openAccessBarreto Andrade, Thierre VictorRibeiro Begnini, Guilherme2023-01-31T20:59:04Zoai:ojs.pkp.sfu.ca:article/46861Revistahttps://periodicos.unb.br/index.php/ripePUBhttps://periodicos.unb.br/index.php/ripe/oaianflor@unb.br2447-61022447-6102opendoar:2023-01-31T20:59:04Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB)false
dc.title.none.fl_str_mv EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
Efeito do pré-tensionamento da torre e das pás nas frequências naturais da turbina eólica de referência DTU 10MW
title EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
spellingShingle EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
Barreto Andrade, Thierre Victor
Wind Turbines
Modal Analysis
Finite Element Method
Pre-Stiffening
Turbina Eólica
Análise Modal
Método dos Elementos Finitos
Pré-tensionamento
title_short EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
title_full EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
title_fullStr EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
title_full_unstemmed EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
title_sort EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
author Barreto Andrade, Thierre Victor
author_facet Barreto Andrade, Thierre Victor
Ribeiro Begnini, Guilherme
author_role author
author2 Ribeiro Begnini, Guilherme
author2_role author
dc.contributor.author.fl_str_mv Barreto Andrade, Thierre Victor
Ribeiro Begnini, Guilherme
dc.subject.por.fl_str_mv Wind Turbines
Modal Analysis
Finite Element Method
Pre-Stiffening
Turbina Eólica
Análise Modal
Método dos Elementos Finitos
Pré-tensionamento
topic Wind Turbines
Modal Analysis
Finite Element Method
Pre-Stiffening
Turbina Eólica
Análise Modal
Método dos Elementos Finitos
Pré-tensionamento
description Modal analysis of horizontal axis wind turbines is becoming more important due to the increase in blade and tower dimensions, making the whole assembly more flexible and susceptible to vibration problems. Due to the slender characteristics of the blade and tower, they are typically modelled as cantilever beams, with the aid of the Finite Element Method. The objective of this paper is to investigate the natural frequencies of the DTU 10MW Reference Wind Turbine (composed of three blades and the tower) under the influence of tower and blades pre-stiffening. Tower pre-stiffening is due to the significant weight of the blades and the hub supported by the tower, resulting in tower compression loads. Blades pre-stiffening are due to the centrifugal loads acting on the rotating blades, thus depending on the rotation speed. The results are computed using the commercial software Altair® HyperWorks® and compared to the baseline results provided by the literature. It was found a maximum reduction of about 2% in the natural frequencies due to the tower pre-stiffening (for the 1st and 2nd modes) and maximum reductions varying from about 7% to 21% due to blades pre-stiffening (for the 1st mode), considering the minimum and maximum operational rotation speeds.
publishDate 2023
dc.date.none.fl_str_mv 2023-01-31
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.unb.br/index.php/ripe/article/view/46861
url https://periodicos.unb.br/index.php/ripe/article/view/46861
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.unb.br/index.php/ripe/article/view/46861/36269
dc.rights.driver.fl_str_mv Copyright (c) 2023 Revista Interdisciplinar de Pesquisa em Engenharia
https://creativecommons.org/licenses/by-nd/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2023 Revista Interdisciplinar de Pesquisa em Engenharia
https://creativecommons.org/licenses/by-nd/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Programa de Pós-Graduação em Integridade de Materiais da Engenharia
publisher.none.fl_str_mv Programa de Pós-Graduação em Integridade de Materiais da Engenharia
dc.source.none.fl_str_mv Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 8 No. 2 (2022): Revista Interdisciplinar de Pesquisa em Engenharia ; 52-61
Revista Interdisciplinar de Pesquisa em Engenharia; v. 8 n. 2 (2022): Revista Interdisciplinar de Pesquisa em Engenharia ; 52-61
2447-6102
reponame:Revista Interdisciplinar de Pesquisa em Engenharia
instname:Universidade de Brasília (UnB)
instacron:UNB
instname_str Universidade de Brasília (UnB)
instacron_str UNB
institution UNB
reponame_str Revista Interdisciplinar de Pesquisa em Engenharia
collection Revista Interdisciplinar de Pesquisa em Engenharia
repository.name.fl_str_mv Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB)
repository.mail.fl_str_mv anflor@unb.br
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