Reduced order models for the analysis of offshore lattice structures

Liu, Biheng (2022) Reduced order models for the analysis of offshore lattice structures. [Laurea magistrale], Università di Bologna, Corso di Studio in Offshore engineering [LM-DM270] - Ravenna, Documento full-text non disponibile
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Abstract

The lattice is a common frame applied in offshore structures benefiting from their economic construction and easily accessible, for example, the jacket platform of the offshore wind turbine. In order to accelerate the design process of a model, this thesis proposed a method to reduce the order of the offshore lattice structure models. The full order model is constructed based on the FEM. Applying the MDOF mass discrete concept lumps the structure mass on each story center. Meanwhile, apply the DSM to determine the displacement and the forces implied on the mass center for accomplishing the unitary displacement of each DOF of the mass center node. Finally, a reduced order model for the lattice structure will be obtained. That model composed of the stiffness matrix of the mass center node has the same fundamental flexural frequency as the original model. The model can be expressed by symbolic relationship as well as possible to package as a function for further quotation. All computation processes of this thesis were executed on the Python platform.

Abstract
Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Liu, Biheng
Relatore della tesi
Scuola
Corso di studio
Indirizzo
OFFSHORE ENERGY TECHNOLOGIES
Ordinamento Cds
DM270
Parole chiave
FEM, DSM, MDOF, Reduced Order Method, Offshore Lattice Structure, Python
Data di discussione della Tesi
15 Marzo 2022
URI

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