Hydroelastic behaviour of a structure exposed to an underwater explosion (Articolo in rivista)

Type
Label
  • Hydroelastic behaviour of a structure exposed to an underwater explosion (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1098/rsta.2014.0103 (literal)
Alternative label
  • Colicchio G. 1,2; Greco M. 1,2; Brocchini M. 3; Faltinsen O.M. 1,2 (2015)
    Hydroelastic behaviour of a structure exposed to an underwater explosion
    in Philosophical transactions - Royal Society. Mathematical, physical and engineering sciences (Online); The Royal Society, London (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Colicchio G. 1,2; Greco M. 1,2; Brocchini M. 3; Faltinsen O.M. 1,2 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 373 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 20140103 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1CNR-INSEAN, The Italian Ship Model Basin, via di Vallerano 139, 00128 Roma, Italy 2Centre for Autonomous Marine Operations and Systems (AMOS), Department of Marine Technology, NTNU, Trondheim, Norway 3Dipartimento di Ingegneria Civile, Edile e di Architettura, Università Politecnica delle Marche, Ancona, Italy (literal)
Titolo
  • Hydroelastic behaviour of a structure exposed to an underwater explosion (literal)
Abstract
  • The hydroelastic interaction between an underwater explosion and an elastic plate is investigated numerically through a domain-decomposition strategy. The three-dimensional features of the problem require a large computational effort,which is reduced through a weak coupling between a one-dimensional radial blast solver, which resolves the blast evolution far from the boundaries, and a three-dimensional compressible flow solver used where the interactions between the compression wave and the boundaries take place and the flow becomes three-dimensional. The three-dimensional flow solver at the boundaries is directly coupled with a modal structural solver that models the response of the solid boundaries like elastic plates. This enables one to simulate the fluid-structure interaction as a strong coupling, in order to capture hydroelastic effects. The method has been applied to the experimental case of Hung et al. (2005 Int. J. Impact Eng. 31, 151-168 (doi:10.1016/ j.ijimpeng.2003.10.039)) with explosion and structure sufficiently far from other boundaries and successfully validated in terms of the evolution of the acceleration induced on the plate. It was also used to investigate the interaction of an underwater explosion with the bottom of a close-by ship modelled as an orthotropic plate. In the application, the acoustic phase of the fluid-structure interaction is examined, highlighting the need of the fluid-structure coupling to capture correctly the possible inception of cavitation. (literal)
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