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Comparison of Full-Scale and Numerical Model Dynamic Responses of Norströmsgrund Lighthouse

[+] Author Affiliations
Wojciech Popko

Fraunhofer Institute for Wind Energy and Energy System Technology IWES, Bremerhaven, GermanyNorwegian University of Science and Technology, Trondheim, Norway

Paper No. OMAE2014-23562, pp. V010T07A021; 9 pages
doi:10.1115/OMAE2014-23562
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 10: Polar and Arctic Science and Technology
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4556-1
  • Copyright © 2014 by ASME

abstract

This paper compares dynamic response of the Norströmsgrund lighthouse and its numerical implementation in Abaqus software. The dynamic response of the full-scale structure was analyzed based on the accelerometers data, which were correlated with ice loading time histories that were recorded from the load panels surrounding the structure. The full-scale measurement data come from the Measurements on Structures in Ice (STRICE) project. A 3D numerical model of the lighthouse, based on the solid elements was setup in Abaqus. Such aspects as soil stiffness and sand filling of caissons were accounted for to more accurately mimic behavior of the real structure. The eigen-frequency response of the numerical model was tuned to correspond with the structural response of the full-scale lighthouse. The numerical model was equipped with a set of load panels on which pre-defined time histories of the full-scale loading were applied. Then, its response was compared with the response of the Norströmsgrund lighthouse.

Copyright © 2014 by ASME

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