Purpose – The aim of this work is the development of a procedure able to model the highly irregular cellular structure of metallic foams on the basis of information obtained by X-ray tomographic analysis. Design/methodology/approach – The geometric modelling is based on the feature “pore” characterized by an ellipsoidal shape. The data for the geometric parameters of the instances are obtained with a methodology which is driven by the pore volume distribution curve. This curve shows how much the cells, whose diameter belongs to a given dimensional range, contribute to the reduction of the total volume. Findings – The presented methodology has been implemented into a CAD tool consisting of a Matlab routine identifying the instances of the feature “pore” and a CATIA's macro modelling the closed cells foam. Originality/value – The presented methodology allows to obtain in an automatic way the CAD model of the complex structure of closed cell aluminium foam approximating by considerable accuracy both the dens...
[1]
P. Rüegsegger,et al.
Finite element analysis of trabecular bone structure: a comparison of image-based meshing techniques.
,
1998,
Journal of biomechanics.
[2]
J. Grenestedt,et al.
Influence of cell wall thickness variations on elastic stiffness of closed-cell cellular solids
,
2000
.
[3]
M. Ashby,et al.
Cellular solids: Structure & properties
,
1988
.
[4]
M. Wolcott.
Cellular solids: Structure and properties
,
1990
.
[5]
Dinesh Manocha,et al.
OBBTree: a hierarchical structure for rapid interference detection
,
1996,
SIGGRAPH.
[6]
V. Dattoma,et al.
Aluminium foams structural modelling
,
2010
.
[7]
Robert F. Singer,et al.
The investigation of morphometric parameters of aluminium foams using micro-computed tomography
,
2002
.
[8]
Nicolas Triantafyllidis,et al.
On the stability of Kelvin cell foams under compressive loads
,
2005
.