Pehlivan, Ahmet Selim and Akşit, Mahmut Faruk and Erbatur, Kemalettin (2021) Fatigue analysis design approach, manufacturing and implementation of a 500 kW wind turbine main load frame. Energies, 14 (12). ISSN 1996-1073
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Official URL: http://dx.doi.org/10.3390/en14123581
Abstract
The main load frame of a wind turbine is the primary mount for all nacelle equipment
and is used as the principal load transmitter. This frame should have a reliable fatigue safety rating
because it is a load-bearing component. In this work, the fatigue life design, manufacturing and
implementation process for the main load frame of a 500 kW wind turbine are studied. The weight
of the main load frame and static safety factors are preserved while the cyclic life of the bedplate
is kept infinite. Modified Goodman theory is applied to achieve an effective fatigue design using
a commercial finite element software package. Analytical calculations are carried out to obtain the
safety factors of the bedplate and dynamic strength of the materials. A finite element approach is
employed to perform stress analysis. Stress oscillations are established for both welded and cast parts
of the hybrid bedplate, and the maximum and minimum stress values are established. Fatigue safety
factors are calculated via fatigue analysis iterations. The obtained safety factors are adequate from
the perspective of commonly accepted fatigue safety standards. Welding and casting techniques are
applied together for manufacturing of the frame. On-site testing indicates that the wind turbine does
not show any signs of fatigue. Rupture, cracks, and abrupt accelerometer reading variations are not
observed.
Item Type: | Article |
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Additional Information: | Scopus'ta henüz yok. |
Uncontrolled Keywords: | wind energy, wind turbine, main load frame, fatigue, Goodman, bedplate, finite element |
Divisions: | Faculty of Engineering and Natural Sciences > Academic programs > Mechatronics Faculty of Engineering and Natural Sciences |
Depositing User: | Kemalettin Erbatur |
Date Deposited: | 22 Aug 2021 13:32 |
Last Modified: | 26 Apr 2022 10:27 |
URI: | https://research.sabanciuniv.edu/id/eprint/42316 |