Dynamic compression of elastic and plastic cellular solids

F. Box, R. Bowman, T. Mullin

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We report the results of an experimental investigation into buckling in elastic and plastic cellular materials under dynamic compression. The buckling instabilities are in the form of a global pattern switch where the square array of circular holes is transformed into a set of orthogonal ellipses. Properties of the instabilities in the elastic and plastic cellular materials are compared and contrasted. The case of the elastic structure is considered as a delayed pitchfork bifurcation. On the other hand, the response of the plastic lattice is complex, and an irreversible global instability is only found above a critical compression rate.
Original languageEnglish
Article number151909
Number of pages4
JournalApplied Physics Letters
Volume103
Issue number15
DOIs
Publication statusPublished - 1 Oct 2013

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