Vibration-Based Damage Assessment in Gravity-Based Wind Turbine Tower under Various Waves
Joint Authors
Lee, So-Young
Nguyen, Cong-Uy
Kim, Heon-Tae
Kim, Jeong-Tae
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-23
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
In this study, the feasibility of vibration-based damage assessment in a wind turbine tower (WTT) with gravity-based foundation (GBF) under various waves is numerically investigated.
Firstly, a finite element model is constructed for the GBF WTT which consists of a tower, caisson, and foundation bed.
Eigenvalue analysis is performed to identify a few vibration modes of interest, which represent complex behaviors of a flexible tower, rigid caisson, and deformable foundation.
Secondly, wave-induced dynamic pressures are analyzed for a few selected wave conditions and damage scenarios are also designed to simulate the main components of the target GBF WTT.
Thirdly, forced vibration responses of the GBF WTT are analyzed for the wave-induced excitation.
Then modal parameters (i.e., natural frequencies and mode shapes) are extracted by using a combined use of time-domain and frequency-domain modal identification methods.
Finally, the variation of modal parameters is estimated by measuring relative changes in natural frequencies and mode shapes in order to quantify the damage-induced effects.
Also, the wave-induced variation of modal parameters is estimated to relatively assess the effect of various wave actions on the damage-induced variation of modal parameters.
American Psychological Association (APA)
Nguyen, Cong-Uy& Lee, So-Young& Kim, Heon-Tae& Kim, Jeong-Tae. 2019. Vibration-Based Damage Assessment in Gravity-Based Wind Turbine Tower under Various Waves. Shock and Vibration،Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1210923
Modern Language Association (MLA)
Nguyen, Cong-Uy…[et al.]. Vibration-Based Damage Assessment in Gravity-Based Wind Turbine Tower under Various Waves. Shock and Vibration No. 2019 (2019), pp.1-17.
https://search.emarefa.net/detail/BIM-1210923
American Medical Association (AMA)
Nguyen, Cong-Uy& Lee, So-Young& Kim, Heon-Tae& Kim, Jeong-Tae. Vibration-Based Damage Assessment in Gravity-Based Wind Turbine Tower under Various Waves. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1210923
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1210923