Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis
Pre-stressing is a concept used in many engineering structures. In this study prestressing in the form of axial compression stress is proposed in the blade structure of H-Darrieus wind turbine. The study draws a structural comparison between reference and prestressed configurations of turbine rotor...
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| Format: | Article |
| Language: | English |
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Universiti Putra Malaysia Press
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/57860/ http://psasir.upm.edu.my/id/eprint/57860/1/27%20JST%20Vol%2025%20%283%29%20July%202017_JST%28S%29-0275-2017_pg977-982.pdf |
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| author | Asr, Mahdi Torabi Masoumi, M. M. Mustapha, Faizal |
| author_facet | Asr, Mahdi Torabi Masoumi, M. M. Mustapha, Faizal |
| author_sort | Asr, Mahdi Torabi |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Pre-stressing is a concept used in many engineering structures. In this study prestressing in the form of axial compression stress is proposed in the blade structure of H-Darrieus wind turbine. The study draws a structural comparison between reference and prestressed configurations of turbine rotor with respect to their dynamic vibrational response. Rotordynamics calculations provided by ANSYS Mechanical is used to investigate the effects of turbine rotation on the dynamic response of the system. Rotation speed ranging between 0 to 150 rad/s was examined to cover the whole operating range of commercial instances. The modal analysis ends up with first six mode shapes of both rotor configurations. As a result, the displacement of the proposed configurations reduced effectively. Apparent variations in Campbell diagrams of both cases indicate that prestressed configuration has its resonant frequencies far away from turbine operation speeds and thus remarkably higher safety factor against whirling and probable following failures. |
| first_indexed | 2025-11-15T10:54:43Z |
| format | Article |
| id | upm-57860 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:54:43Z |
| publishDate | 2017 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-578602018-01-25T09:12:11Z http://psasir.upm.edu.my/id/eprint/57860/ Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis Asr, Mahdi Torabi Masoumi, M. M. Mustapha, Faizal Pre-stressing is a concept used in many engineering structures. In this study prestressing in the form of axial compression stress is proposed in the blade structure of H-Darrieus wind turbine. The study draws a structural comparison between reference and prestressed configurations of turbine rotor with respect to their dynamic vibrational response. Rotordynamics calculations provided by ANSYS Mechanical is used to investigate the effects of turbine rotation on the dynamic response of the system. Rotation speed ranging between 0 to 150 rad/s was examined to cover the whole operating range of commercial instances. The modal analysis ends up with first six mode shapes of both rotor configurations. As a result, the displacement of the proposed configurations reduced effectively. Apparent variations in Campbell diagrams of both cases indicate that prestressed configuration has its resonant frequencies far away from turbine operation speeds and thus remarkably higher safety factor against whirling and probable following failures. Universiti Putra Malaysia Press 2017 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/57860/1/27%20JST%20Vol%2025%20%283%29%20July%202017_JST%28S%29-0275-2017_pg977-982.pdf Asr, Mahdi Torabi and Masoumi, M. M. and Mustapha, Faizal (2017) Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis. Pertanika Journal of Science & Technology, 25 (3). pp. 977-982. ISSN 0128-7680; ESSN: 2231-8526 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JST%20Vol.%2025%20(3)%20Jul.%202017/27%20JST%20Vol%2025%20(3)%20July%202017_JST(S)-0275-2017_pg977-982.pdf |
| spellingShingle | Asr, Mahdi Torabi Masoumi, M. M. Mustapha, Faizal Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis |
| title | Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis |
| title_full | Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis |
| title_fullStr | Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis |
| title_full_unstemmed | Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis |
| title_short | Modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis |
| title_sort | modal behaviour of vertical axis wind turbine comprising prestressed rotor blades: a finite element analysis |
| url | http://psasir.upm.edu.my/id/eprint/57860/ http://psasir.upm.edu.my/id/eprint/57860/ http://psasir.upm.edu.my/id/eprint/57860/1/27%20JST%20Vol%2025%20%283%29%20July%202017_JST%28S%29-0275-2017_pg977-982.pdf |