Capturing mode-switching in postbuckling composite panels using a modified explicit procedure

B G Falzon, D Hitchings

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A postbuckling blade-stiffened composite panel was loaded in uniaxial compression, until failure. During loading beyond initial buckling, this panel was observed to undergo a secondary instability characterised by a dynamic mode shape change. These abrupt changes cause considerable numerical difficulties using standard path-following quasi-static solution procedures in finite element analysis. Improved methods such as the arc-length-related procedures do better at traversing certain critical points along an equilibrium path but these procedures may also encounter difficulties in highly non-linear problems. This paper presents a robust, modified explicit dynamic analysis for the modelling of postbuckling structures. This method was shown to predict the mode-switch with good accuracy and is more efficient than standard explicit dynamic analysis. (C) 2003 Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)447-453
Number of pages7
JournalComposite Structures
Volume60
Issue number4
Early online date20 Mar 2003
DOIs
Publication statusPublished - Jun 2003

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ceramics and Composites

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