Engineering Mechanics

Proceedings Vol. 12 (2006)

ENGINEERING MECHANICS 2006

Copyright © 2006 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, Prague

 

D. Rypl
pages 322 - +12p., full text

The present paper deals with the evaluation of geometrical properties of aggregate particles. Initially, a smooth representation of the aggregate particle shape is recovered from its digital voxel based representation using the expansion into spherical harmonic functions. The resolution of the smooth representation can be flexibly controlled by the number of terms in the expansion. Then the geometrical properties, including volume, surface area, moments of inertia, and curvature, are evaluated using numerical integration of appropriate analytical terms. The advantage of this approach consists in the fact that it unifies the approach for the evaluation of geometrical properties and that it allows to evaluate important properties such as the curvature or surface area, which cannot be reliably assessed from the digital representation. The evaluated geometrical properties may be used to classify aggregate from different sources, according to their shape and size.

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