https://doi.org/10.1007/s100510050069
Experimental study of the porosity of loose stacks of stiff cylindrical fibres: Influence of the aspect ratio of fibres
Institut Universitaire des Systèmes Thermiques Industriels (UMR 6595 du CNRS) , Université de
Provence, Technopôle de Château Gombert,
5 rue Enrico Fermi, 13453 Marseille Cedex 13, France
Received:
12
April
1999
Revised:
4
August
1999
Published online: 15 February 2000
The aim of this work is to study the porosity of three-dimensional and two-dimensional packing of stiff cylindrical fibres according to their aspect ratio. First, we have carried out an experimental study of the porosity for 3D and 2D packing. In this last case, the elementary representative surfaces have been determined. Then, an attempt of interpretation of the porosity variations for 2D stacks has been realized on the basis of the excluded volume theory and a variation law has been proposed. To conclude, we have studied the relevance of a simplified packing model based on a single geometry of the defects.
PACS: 45.70.-n – Granular systems / 46.65.+g – Random phenomena and media / 61.43.Gt – Powders, porous materials
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
