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Title: Compressive properties of granular foams of adhesively bonded steel hollow sphere blocks
Authors: Yiatros, Stylianos 
Marangos, Orestes 
Votsis, Renos 
Brennan, Feargal P. 
Keywords: Crush band propagation;Metal foams;Steel hollow sphere assemblies;Compression testing
Category: Civil Engineering;Civil Engineering
Field: Engineering and Technology
Issue Date: Dec-2018
Publisher: Elsevier
Source: Mechanics Research Communications, 2018, Volume 94, Pages 13-20
Abstract: Steel hollow spheres adhesively bonded together as a granular composite metal foam, is a special type of porous metal that aims to combine low weight, with ductility and energy absorption. Hollow spheres comprising steel foam shells were coated with a thermally activated epoxy in order to form different specimen geometries upon moulding and curing. The collapse propagation and energy absorption of steel hollow sphere blocks, comprising spheres of different sizes, was investigated experimentally, quantifying quasi-elastic and nonlinear properties of the steel hollow sphere assemblies in compression and comparing them with analytical and semi-empirical rules based on porous metal density and sphere packing. The results identify the initiation and nature of damage and highlight the merits of the material in absorbing high compressive deformations without significant loss of integrity.
ISSN: 0093-6413
Rights: © 2018 Elsevier Ltd. All rights reserved.
Type: Article
Appears in Collections:Άρθρα/Articles

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