Effect of Physical Nonlinearity on Local Buckling in Sandwich Beams

V. Koysin, Andrey Shipsha, Vitaly Skvortsov

Research output: Contribution to journalArticleAcademic

14 Citations (Scopus)

Abstract

This article deals with experimental, theoretical, and FE characterization of the local buckling in foam-core sandwich beams. In the theoretical approach, this phenomena is considered in a periodic formulation (unbounded wrinkle wave); a nonlinear stress—strain response of the face material is accounted for. In the FE approach, nonlinearity of the core material is also modeled. Full-field strain measurement is employed in the tests showing that the commonly used edgewise compression set-up can cause premature waviness of the faces, and therefore, nonlinear local deformations in the core layer.
Original languageUndefined
Pages (from-to)477-494
JournalJournal of Sandwich Structures & Materials
Volume12
Issue number4
DOIs
Publication statusPublished - 2010

Keywords

  • Local buckling
  • wrinkling
  • IR-75525
  • Sandwich structure
  • Modeling

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