Vibration Characteristics of Roundabout Swing of HAWT Wind Wheel
Joint Authors
Ma, Jian-long
Li, Pei-lin
Wang, Jian-wen
Yang, Liu
Zhang, Yan-qi
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-08-08
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Modal testing was used to show that the roundabout swing was a natural vibration mode of the wind wheel of a horizontal-axis wind turbine (HAWT).
During the vibration, the blade root was simultaneously subjected to bending and rotary shear stresses.
A method for indirect testing and determination of the dynamic frequencies of the typical vibrations of the wind wheel was developed, based on the frequency-holding characteristic of each subsignal during the transmission of the multiple mixed-vibration signals.
The developed method enabled simple and accurate acquisition of the dynamic frequencies without destruction of the flow and structural fields.
The dynamic vibration stress of the roundabout swing was found to be significantly stronger than those of the first- and second-order flexural vibrations of the blades.
By a combination of numerical simulations and tests, it was determined that the pneumatic circumferential force was the primary determinant of the roundabout swing vibration frequencies, the relationship being quadratic.
The roundabout swing vibration potentially offers new explanations and analytical pathways regarding the behavior of horizontal-axis wind turbines, which have been found to be frequently involved in fatigue-damage accidents within periods shorter than their design lives.
American Psychological Association (APA)
Ma, Jian-long& Li, Pei-lin& Wang, Jian-wen& Yang, Liu& Zhang, Yan-qi. 2016. Vibration Characteristics of Roundabout Swing of HAWT Wind Wheel. Shock and Vibration،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1118755
Modern Language Association (MLA)
Ma, Jian-long…[et al.]. Vibration Characteristics of Roundabout Swing of HAWT Wind Wheel. Shock and Vibration No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1118755
American Medical Association (AMA)
Ma, Jian-long& Li, Pei-lin& Wang, Jian-wen& Yang, Liu& Zhang, Yan-qi. Vibration Characteristics of Roundabout Swing of HAWT Wind Wheel. Shock and Vibration. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1118755
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118755