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Low-velocity impact behaviour and failure of stiffened steel plates

Abstract

The 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.
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Category

Academic article

Language

English

Author(s)

  • Gaute Gruben
  • Sindre Hellem Sølvernes
  • Torodd Berstad
  • David Morin
  • Odd Sture Hopperstad
  • Magnus Langseth

Affiliation

  • SINTEF Industry / Materials and Nanotechnology
  • Norwegian University of Science and Technology
  • Diverse norske bedrifter og organisasjoner

Year

2017

Published in

Marine Structures

ISSN

0951-8339

Volume

54

Page(s)

73 - 91

View this publication at Norwegian Research Information Repository