Failure modes in open-cell foams with hollow struts

Failure modes in open-cell foams with hollow struts are analyzed. As the walls of the struts become thin, the failure mode of the foam can change from plastic collapse of struts loaded in bending to plastic collapse of struts loaded in direct compression. For very thin strut walls an elastic strut w...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2008-11, Vol.62 (28), p.4319-4321
Main Authors: Andrews, E.W., Tashi, T., Jun, S.
Format: Article
Language:English
Subjects:
Buckling
Deformation and fracture
Foams
Mechanical properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Failure modes in open-cell foams with hollow struts are analyzed. As the walls of the struts become thin, the failure mode of the foam can change from plastic collapse of struts loaded in bending to plastic collapse of struts loaded in direct compression. For very thin strut walls an elastic strut wrinkling failure mode is possible. Expressions for the failure modes are derived, and a failure mode map is presented to clarify when the various modes are expected. The analysis suggests that a hollow strut foam can be substantially stronger than a solid strut foam with the same relative density.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2008.07.007