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An isogeometric FE-BE method and experimental investigation for the hydroelastic analysis of the horizontal circular cylindrical shell partially filled with fluid

An isogeometric FE-BE method and experimental investigation for the hydroelastic analysis of the horizontal circular cylindrical shell partially filled with fluid
An isogeometric FE-BE method and experimental investigation for the hydroelastic analysis of the horizontal circular cylindrical shell partially filled with fluid
In this study, the dynamic characteristics (i.e. natural frequencies and associ­ated mode shapes) of a partially filled horizontal cylindrical shell are investi­gated experimentally and by an isogeometric finite element-boundary element method. The proposed numerical procedure is divided into two parts. In the first part, the dynamic characteristics of the cylindrical shell under in-vacuo conditions are obtained by the isogeometric finite element method (IGAFEM) based on a linear Kirchhoff-Love shell formulation. In the second part, the fluid­structure interaction effects are calculated in terms of generalized added mass coefficients by using the isogeometric boundary element method (IGABEM), assuming that the structure vibrates in its in-vacuo principle mode shapes. By adopting the linear hydroelasticity theory, it is assumed that the fluid flow is ideal, i.e., an incompressible flow and inviscid fluid. In order to show the versa­tility of the numerical method, the results are compared with those obtained by the conducted experiments. Relevant numerical challenges in the hydroelastic vibration analysis are highlighted and it is shown that the numerical predictions and experimental results are in good agreement.

Isogeometric Analysis, Hydroelasticity, Finite Element Method
0263-8231
Ardic, Ibrahim, Tugrul
e94cc112-b414-40c0-b6d5-517d23c93b48
Yildizdag, M. Erden
9692473b-3f93-45e3-b2ae-aaf22966a4fe
Kefal, Adnan
9fa243a9-fe0c-4ad5-afcf-79c73ee473cf
Ergin, Istanbul
c4efce30-0c7d-40bd-b052-a0df3a7524a0
Ardic, Ibrahim, Tugrul
e94cc112-b414-40c0-b6d5-517d23c93b48
Yildizdag, M. Erden
9692473b-3f93-45e3-b2ae-aaf22966a4fe
Kefal, Adnan
9fa243a9-fe0c-4ad5-afcf-79c73ee473cf
Ergin, Istanbul
c4efce30-0c7d-40bd-b052-a0df3a7524a0

Ardic, Ibrahim, Tugrul, Yildizdag, M. Erden, Kefal, Adnan and Ergin, Istanbul (2020) An isogeometric FE-BE method and experimental investigation for the hydroelastic analysis of the horizontal circular cylindrical shell partially filled with fluid. Thin-Walled Structures, [106755]. (doi:10.1016/j.tws.2020.106755).

Record type: Article

Abstract

In this study, the dynamic characteristics (i.e. natural frequencies and associ­ated mode shapes) of a partially filled horizontal cylindrical shell are investi­gated experimentally and by an isogeometric finite element-boundary element method. The proposed numerical procedure is divided into two parts. In the first part, the dynamic characteristics of the cylindrical shell under in-vacuo conditions are obtained by the isogeometric finite element method (IGAFEM) based on a linear Kirchhoff-Love shell formulation. In the second part, the fluid­structure interaction effects are calculated in terms of generalized added mass coefficients by using the isogeometric boundary element method (IGABEM), assuming that the structure vibrates in its in-vacuo principle mode shapes. By adopting the linear hydroelasticity theory, it is assumed that the fluid flow is ideal, i.e., an incompressible flow and inviscid fluid. In order to show the versa­tility of the numerical method, the results are compared with those obtained by the conducted experiments. Relevant numerical challenges in the hydroelastic vibration analysis are highlighted and it is shown that the numerical predictions and experimental results are in good agreement.

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Article3 - Accepted Manuscript
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Accepted/In Press date: 23 March 2020
e-pub ahead of print date: 8 April 2020
Keywords: Isogeometric Analysis, Hydroelasticity, Finite Element Method

Identifiers

Local EPrints ID: 450749
URI: http://eprints.soton.ac.uk/id/eprint/450749
ISSN: 0263-8231
PURE UUID: 0e1ff7b6-0b6a-4eff-b36f-43f0901f3df7
ORCID for Ibrahim, Tugrul Ardic: ORCID iD orcid.org/0000-0001-9458-9837

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Date deposited: 10 Aug 2021 16:30
Last modified: 16 Mar 2024 13:23

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Contributors

Author: M. Erden Yildizdag
Author: Adnan Kefal
Author: Istanbul Ergin

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