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RESEARCH PAPERS

Microdynamics of Crushing in Cellular Solids

[+] Author and Article Information
W. J. Stronge

Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK

V. P.-W. Shim

Department of Mechanical and Production Engineering, National University of Singapore, Kent Ridge, Singapore

J. Eng. Mater. Technol 110(2), 185-190 (Apr 01, 1988) (6 pages) doi:10.1115/1.3226029 History: Received November 11, 1987; Online September 15, 2009

Abstract

Lightweight, open-celled foams and honeycombs can exhibit deformation localization during static crushing as a result of buckling and plastic collapse of cell walls. Localization of deformation is a manifestation of strain-softening behavior that limits transmitted forces through these shock mitigating materials. Collision tests on two-dimensional cellular solids with strain-softening behavior reveal that with some microstructures, strain-rate effects can stabilize less compliant modes of deformation. When stabilization occurs, it amplifies the intensity of transmitted shocks.

Copyright © 1988 by ASME
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