Comparison of USA-DYNA finite element models for a stiffened shell subject to underwater shock

A numerical study was conducted for simplified finite element modeling of stiffened structures under a dynamic loading. The study considerd submerged structures subject to an underwater explosion. The objective of this study was to develop a finite element modeling technique which is computationally...

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Bibliographic Details
Published inComputers & structures Vol. 66; no. 1; pp. 127 - 144
Main Authors Kwon, Y.W., Cunningham, R.E.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1998
Subjects
Boundary element method
Dynamic analysis
Finite element modeling
Fluid-structure interaction
Stiffened shell
Underwater shock
Underwater shock
Finite element modeling
Fluid-structure interaction
Dynamic analysis
Boundary element method
Stiffened shell
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Summary:A numerical study was conducted for simplified finite element modeling of stiffened structures under a dynamic loading. The study considerd submerged structures subject to an underwater explosion. The objective of this study was to develop a finite element modeling technique which is computationally efficient and still accurate in terms of the structural dynamic response. This paper investigated techniques for smearing of stiffeners, represenation of a cylindrical shell by a beam with surface of revolution (SOR), and interface of a cylindrical shell with a SOR beam. The advantage and disadvantage: of those techniques in conjunction with an explicit time-integration scheme were also discussed.
ISSN:0045-7949
1879-2243
DOI:10.1016/S0045-7949(97)00049-7