Numerical Modelling of Structures with Uncertainties

Maciej Kahsin

doi:10.1515/pomr-2017-0030

Numerical Modelling of Structures with Uncertainties

Abstract

The nature of environmental interactions, as well as large dimensions and complex structure of marine offshore objects, make designing, building and operation of these objects a great challenge. This is the reason why a vast majority of investment cases of this type include structural analysis, performed using scaled laboratory models and complemented by extended computer simulations. The present paper focuses on FEM modelling of the offshore wind turbine supporting structure. Then problem is studied using the modal analysis, sensitivity analysis, as well as the design of experiment (DOE) and response surface model (RSM) methods. The results of modal analysis based simulations were used for assessing the quality of the FEM model against the data measured during the experimental modal analysis of the scaled laboratory model for different support conditions. The sensitivity analysis, in turn, has provided opportunities for assessing the effect of individual FEM model parameters on the dynamic response of the examined supporting structure. The DOE and RSM methods allowed to determine the effect of model parameter changes on the supporting structure response.

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DOI:: Digital Object Identifier (open in new tab) 10.1515/pomr-2017-0030
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Keywords

WIND TURBINE, OFFSHORE, FEA, MODAL ANALYSIS, DYNAMIC COUPLING, SENSITIVITY ANALYSIS, DESIGN OF EXPERIMENT, RESPONSE SURFACE METHOD.

Details

Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: Polish Maritime Research no. 24, edition S1(93), pages 125 - 132,
ISSN: 1233-2585
Language:: English
Publication year:: 2017
Bibliographic description:: Kahsin M.: Numerical Modelling of Structures with Uncertainties// Polish Maritime Research. -Vol. 24, iss. S1(93) (2017), s.125-132
DOI:: Digital Object Identifier (open in new tab) 10.1515/pomr-2017-0030
Verified by:: Gdańsk University of Technology