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Shock and Vibration
Volume 15, Issue 1, Pages 79-99
http://dx.doi.org/10.1155/2008/765494

Application of the Modified Compaction Material Model to the Analysis of Landmine Detonation in Soil with Various Degrees of Water Saturation

M. Grujicic,1 B. Pandurangan,1 J.D. Summers,1 B.A. Cheeseman,2 W.N. Roy,2 and R.R. Skaggs3

1Department of Mechanical Engineering, Clemson University, Clemson SC 29634, USA
2Army Research Laboratory – Survivability Materials Branch, Aberdeen, Proving Ground, MD 21005-5069, USA
3Army Research Laboratory – Explosive Technologies Branch, Aberdeen, Proving Ground, MD 21005-5069, USA

Received 24 July 2006; Revised 4 January 2007

Copyright © 2008 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A series of transient non-linear dynamics computational analyses of the explosion phenomena accompanying the detonation of a 100g C4 mine buried in sand to different depths is carried out using the software package AUTODYN. The mechanical response of sand under high deformation-rate conditions has been represented using the modified compaction material model developed in our recent work [1]. While the mechanical response of the other attendant materials (air, gaseous-detonation products and AISI 1006 mild steel) is accounted for using the material models available in literature. The results obtained (specifically, the temporal evolution of the sand overburden shape and pressure at various locations in air above the detonation site) were compared with their experimental counterparts for a (50wt%-sand/50wt.%-clay) soil obtained recently by Foedinger [2]. The comparison revealed that the modified compaction material model for sand can account reasonably well for the magnitude, spatial distribution and the temporal evolution of the dynamic loads accompanying detonation of shallow-buried mines in soils with various clay and water contents.