Numerical Simulation of the Dynamic Breakage Testing of Sandstone, Part I: Development of Homogeneous Constitutive Model for the Fragmentation Analysis in Sandstone

Journal
UTCC Engineering Research Papers
Publisher(s)
University of the Thai Chamber of Commerce
Date Issued
2007
Author(s)
Other Contributor(s)
University of the Thai Chamber of Commerce. School of Engineering
Abstract
Laboratory drop weight tests rig and numerical modelling have been used to investigate theimpact energy effect on the degree of dynamic fragmentation of cylindrical rock samples. Thedrop weight tests indicated that the degree of dynamic fragmentation of the Daley Dalesandstone formed a non-linear relation with impact energy. In the numerical modelling of thedrop weight test, the shear localisation developed in the Daley Dale sandstone was assumed torepresent discrete fracture planes. Shear bands, outputs of the image analysis of the numericalmodel, were used to separate solid material from shattered or broken material, allowing theFLAC output from the dynamic modelling to be processed into black and white fragmentedimages. This was undertaken to determine particle size distributions. Corresponding gradingcurves from the numerical modelling were then validated against the laboratory derived curvesindicating the potential of numerical modelling to simulate the process of rock fragmentation.
Subject(s)
ISSN
1906-1625
Access Rights
public
Rights
This work is protected by copyright. Reproduction or distribution of the work in any format is prohibited without written permission of the copyright owner.
Rights Holder(s)
University of the Thai Chamber of Commerce
Bibliographic Citation
P. Vanichkobchinda, D. Reddish, L. Stace, D. Whittles (2007) Numerical Simulation of the Dynamic Breakage Testing of Sandstone, Part I: Development of Homogeneous Constitutive Model for the Fragmentation Analysis in Sandstone. UTCC Engineering Research Papers.
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