Dynamic compression of elastic and plastic cellular solids

F. Box, R. Bowman, T. Mullin

Research output: Contribution to journalArticlepeer-review

10 Citations (SciVal)

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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