MODAL PARAMETER ESTIMATION OF A SMALL
SCALE MODEL OF AN OFFSHORE PLATFORM : A
COMPARISON OF TWO DIFFERENT ALGORITHMS

Carlos Magluta; Luiz Fernando; Lomba Rosa and Ney Roitman

doi:10.2495/OE970321

MODAL PARAMETER ESTIMATION OF A SMALL SCALE MODEL OF AN OFFSHORE PLATFORM : A COMPARISON OF TWO DIFFERENT ALGORITHMS

Price

Free (open access)

Transaction

WIT Transactions on The Built Environment

Volume

Pages

Published

1997

Size

1,010 kb

Paper DOI

10.2495/OE970321

WIT Press

Author(s)

Carlos Magluta, Luiz Fernando, Lomba Rosa and Ney Roitman

Abstract

- A modal parameter estimation algorithm using "Goal Programming", a nonlinear optimization technique, is presented. Some numerical simulations that reproduce complex practical applications were performed and the results estimated through Goal Programming algorithm are compared with those estimated through a classical modal estimation method - the Orthogonal Polynomials Method. Experimental tests were carried on a small scale model of a fixed offshore platform and the Frequency Response Functions (FRFs) obtained are analyzed using the Orthogonal Polynomials Method and Goal Programming algorithm. The Modal Assurance Coefficient (MAC) matrix is used to correlate the experimentally estimated mode shapes and the numerical ones, obta

Keywords

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Code

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