Numerical optimization approach to modelling delamination and buckling of geometrically constrained structures

Glen Mullineux, Ben J Hicks, Christopher Berry

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)

Abstract

Understanding what happens in terms of delamination during buckling of laminate materials is of importance across a range of engineering sectors. Normally concern is that the strength of the material is not significantly impaired. Carton-board is a material with a laminate structure and, in the initial creation of carton nets, the board is creased in order to weaken the structure. This means that when the carton is eventually folded into its three-dimensional form, correct folding occurs along the weakened crease lines. Understanding what happens during creasing and folding is made difficult by the nonlinear nature of the material properties. This paper considers a simplified approach which extends the idea of minimizing internal energy so that the effects of delamination can be handled. This allows a simulation which reproduces the form of buckling-delamination observed in practice and the form of the torque-rotation relation.

Original languageEnglish
Pages (from-to)1925-1941
Number of pages17
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume370
Issue number1965
DOIs
Publication statusPublished - 28 Apr 2012

Keywords

  • delamination
  • buckling
  • minimum energy method
  • cartons
  • carton-board
  • BEHAVIOR
  • PAPERBOARD

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