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Low-velocity impact behaviour and failure of stiffened steel plates
AbstractThe behaviour and failure of stiffened steel plates subjected to transverse loading by an indenter is studied in this paper. Low-velocity dynamic and quasi-static tests of stiffened plates with geometry adopted from a typical external deck area on an offshore platform were conducted. The results show that the quasi-static tests provide a good reference for impact loading situations, although they displayed a larger displacement at fracture. Finite element simulations of the steel panel tests were performed, using the elastic-viscoplastic J2 flow theory and a one-parameter fracture criterion. A relatively fine spatial discretization in the load application area was needed to capture accurately the onset of fracture. In order to locally refine the mesh, a method for automatic mesh refinement based on damage driven h-adaptivity was implemented and evaluated against results obtained with fixed meshes of various element sizes.
HighlightsStiffened steel plates subjected to quasi-static and dynamic transversal loading are presented.The quasi-static tests provide a good reference for impact loading situations.A fine spatial discretization is needed to capture accurately the onset of fracture.A method for automatic mesh refinement is presented and evaluated.
Low-velocity impact behaviour and failure of stiffened steel plates
AbstractThe behaviour and failure of stiffened steel plates subjected to transverse loading by an indenter is studied in this paper. Low-velocity dynamic and quasi-static tests of stiffened plates with geometry adopted from a typical external deck area on an offshore platform were conducted. The results show that the quasi-static tests provide a good reference for impact loading situations, although they displayed a larger displacement at fracture. Finite element simulations of the steel panel tests were performed, using the elastic-viscoplastic J2 flow theory and a one-parameter fracture criterion. A relatively fine spatial discretization in the load application area was needed to capture accurately the onset of fracture. In order to locally refine the mesh, a method for automatic mesh refinement based on damage driven h-adaptivity was implemented and evaluated against results obtained with fixed meshes of various element sizes.
HighlightsStiffened steel plates subjected to quasi-static and dynamic transversal loading are presented.The quasi-static tests provide a good reference for impact loading situations.A fine spatial discretization is needed to capture accurately the onset of fracture.A method for automatic mesh refinement is presented and evaluated.
Low-velocity impact behaviour and failure of stiffened steel plates
Gruben, G. (author) / Sølvernes, S. (author) / Berstad, T. (author) / Morin, D. (author) / Hopperstad, O.S. (author) / Langseth, M. (author)
Marine Structures ; 54 ; 73-91
2017-03-28
19 pages
Article (Journal)
Electronic Resource
English
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