Hydroelastic vibration analysis of plates partially submerged in fluid with an isogeometric FE-BE approach

M. Erden Yildizdag*, I. Tugrul Ardic, Murat Demirtas, Ahmet Ergin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

This paper presents the hydroelastic vibration analysis of clamped rectangular plates, vertically or horizontally submerged in fluid by using isogeometric finite element and boundary element methods. The method of analysis is divided into two parts. In the first part, the dynamic characteristics of the structure, in vacuo conditions and in the absence of external forces, are obtained by NURBS-based isogeometric finite element method (IGAFEM). In the second part of the analysis, the fluid-structure interaction effects are calculated by using a NURBS-based isogeometric boundary element method (IGABEM) in conjunction with the method of images, in order to impose appropriate boundary condition on the fluid's free surface. By adopting the linear hydroelasticity theory, the fluid is assumed ideal, i.e., inviscid, incompressible and its motion is irrotational. The fluid-structure interaction effects are calculated in terms of the generalized added mass coefficients. In order to demonstrate the applicability of the proposed method, two different clamped rectangular plates were adopted for the calculations. The effects of the plate thickness and aspect ratio are also investigated. The predictions compare well with available numerical and experimental results found in the literature.

Original languageEnglish
Pages (from-to)316-329
Number of pages14
JournalOcean Engineering
Volume172
DOIs
Publication statusPublished - 15 Jan 2019

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd

Funding

M. E. Yildizdag gratefully acknowledges the financial support from The Scientific and Technological Research Council of Turkey (TUBITAK), under the programme BIDEB 2213. M. E. Yildizdag gratefully acknowledges the financial support from The Scientific and Technological Research Council of Turkey (TUBITAK), under the programme BIDEB 2213 .

FundersFunder number
TUBITAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu2213

    Keywords

    • Boundary element method
    • Finite element method
    • Hydroelasticity
    • Isogeometric analysis

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