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.
| Language | English |
|---|---|
| Pages | 13-20 |
| Number of pages | 8 |
| Journal | Mechanics Research Communications |
| Volume | 94 |
| Early online date | 17 Aug 2018 |
| DOIs | |
| Publication status | Published - 1 Dec 2018 |
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Keywords
- compression testing
- crush band propagation
- metal foams
- steel hollow sphere assemblies
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Compressive properties of granular foams of adhesively bonded steel hollow sphere blocks. / Yiatros, Stylianos; Marangos, Orestes; Votsis, Renos A.; Brennan, Feargal P.
In: Mechanics Research Communications, Vol. 94, 01.12.2018, p. 13-20.Research output: Contribution to journal › Article
TY - JOUR
T1 - Compressive properties of granular foams of adhesively bonded steel hollow sphere blocks
AU - Yiatros, Stylianos
AU - Marangos, Orestes
AU - Votsis, Renos A.
AU - Brennan, Feargal P.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - 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.
AB - 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.
KW - compression testing
KW - crush band propagation
KW - metal foams
KW - steel hollow sphere assemblies
UR - http://www.scopus.com/inward/record.url?scp=85052942380&partnerID=8YFLogxK
U2 - 10.1016/j.mechrescom.2018.08.005
DO - 10.1016/j.mechrescom.2018.08.005
M3 - Article
VL - 94
SP - 13
EP - 20
JO - Mechanics Research Communications
T2 - Mechanics Research Communications
JF - Mechanics Research Communications
SN - 0093-6413
ER -