EFFECTS OF TOWER AND BLADES PRE-STIFFENING ON THE NATURAL FREQUENCIES OF THE DTU 10MW REFERENCE WIND TURBINE
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | |
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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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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