Title: Modelling open cell-foams based on the Weaire-Phelan unit cell with a minimal surface energy approach
Authors: Buffel, Bart ×
Desplentere, Frederik
Bracke, Kris
Verpoest, Ignace #
Issue Date: Jun-2014
Publisher: Elsevier
Series Title: International Journal of Solids and Structures vol:51 issue:19-20 pages:3461-3470
Abstract: The complex architecture of open cell foams has most often been described by Kelvin cell models. It has been shown that the accuracy to predict the elastic properties of open cell foams increases with an increasing level of detail and resemblance to real foam microstructures. However, the Kelvin cell does not possess pentagonal faces which are the most abundant within real open cell foams. Therefore this study focuses on the use of the Weaire-Phelan unit cell to model the elastic properties of an open cell polyurethane foam. Optical and scanning electron microscopy were used to characterize the architecture of the open cell foam. Surface Evolver software was used to minimize the surface energy and introduce the typical architectural characteristics of the open cell foam to the FE-model. The E-modulus and Pois-son coefficient of the Kelvin and Weaire-Phelan cell show a similar behaviour as a function of density. The Weaire-Phelan cell predicts however a higher dependency of the shear modulus on the density. When the influence of the elongation of the cells in the rise direction of the foam and the uncertainty of the solid material properties of the polyurethane is taken into account, a good accuracy of the Kelvin cell and Weaire-Phelan structure based FE-models versus experimental compression tests is found.
ISSN: 0020-7683
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Materials Technology TC, Technology Campus Ostend
Technologiecluster Materialentechnologie
Structural Composites and Alloys, Integrity and Nondestructive Testing
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
Buffel2014_Modelling_open_cell-foams_based_on_the_Weaire-Phelan_unit_cell_with_a_minimal_surface_energy_approach.pdf Published 1937KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science