Abstract
As a flexible structure with the height-to-width ratio being quite large, the wind-power tower structure is easily produce the wind-induced vibration under the action of dynamic wind load. First of all, the probabilistic characteristics of the response of structure and its control system in the frequency domain are analyzed in theory. Secondly, the structural responses of wind load under three conditions, including standard operating condition, cutting condition and limiting condition, are analyzed by the spectral analysis method in practice and the control effect of the damper on the structure is discussed. The results show that the tower structure has different response characteristics under different wind speeds, and the maximum displacement and acceleration of the structure are greatly reduced after the suspension tuned mass damper is set up. DOI: http://dx.doi.org/10.5755/j01.mech.23.6.19852
Highlights
The wind-power tower is a flexible structure the characteristics of ‘high, large, long and thin’
After the installation of tuned mass damper (TMD), with no TMD, of the ratio of the displacement mean square value of the structure at any point m is given as: The damping device can reduce the effect of the wind vibration response, which is caused by the shortening of the system period due to the additional stiffness of dampers and the reduction of the energy generated by the damping characteristic of the damper [11]
For the wind speed being 50m/s and wind turbines being in extreme condition, the Reynolds number Re is 12.87×106
Summary
The wind-power tower is a flexible structure the characteristics of ‘high, large, long and thin’. The width and depth of the tower is much smaller than its height. The wind load is one of the main design loads, which is divided into two parts, including static wind load and fluctuating wind load. The latter can cause structural vibration [1]. For the calculation of wind-induced vibration, the peak response of the structure considered as a linear structure is concerned and the spectral analysis method is used to solve the problem [2,3,4]. Based on the analysis of wind load response, the response of the structure with dampers or without dampers is analyzed by the spectrum analysis method
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
