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Long-term dynamic behavior of monopile supported offshore wind turbines in sand

Bhattacharya, S, Nikitas, G, Yu, L, Wang, L-Z and Guo, Z (2015) Long-term dynamic behavior of monopile supported offshore wind turbines in sand Theoretical and Applied Mechanics Letters, 5 (2). pp. 80-84.

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Abstract

The complexity of the loads acting on the offshore wind turbines (OWTs) structures and the significance of investigation on structure dynamics are explained. Test results obtained from a scaled wind turbine model are also summarized. The model is supported on monopile, subjected to different types of dynamic loading using an innovative out of balance mass system to apply cyclic/dynamic loads. The test results show the natural frequency of the wind turbine structure increases with the number of cycles, but with a reduced rate of increase with the accumulation of soil strain level. The change is found to be dependent on the shear strain level in the soil next to the pile which matches with the expectations from the element tests of the soil. The test results were plotted in a non-dimensional manner in order to be scaled to predict the prototype consequences using element tests of a soil using resonant column apparatus.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
AuthorsEmailORCID
Bhattacharya, SUNSPECIFIEDUNSPECIFIED
Nikitas, GUNSPECIFIEDUNSPECIFIED
Yu, LUNSPECIFIEDUNSPECIFIED
Wang, L-ZUNSPECIFIEDUNSPECIFIED
Guo, ZUNSPECIFIEDUNSPECIFIED
Date : 5 May 2015
Identification Number : 10.1016/j.taml.2015.02.003
Additional Information : © 2015 The Authors. Published by Elsevier Ltd on behalf of The Chinese Society of Theoretical and Applied Mechanics. This is an open access article under the CC BY license (http://creativecommons.org/ licenses/by/4.0/)
Depositing User : Symplectic Elements
Date Deposited : 03 Jul 2015 08:03
Last Modified : 03 Jul 2015 08:03
URI: http://epubs.surrey.ac.uk/id/eprint/807876

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