Affiliations: Department of Mechanical Engineering, Clemson
University, Clemson SC 29634, USA | Army Research Laboratory – Survivability Materials
Branch, Aberdeen, Proving Ground, MD 21005-5069, USA | Army Research Laboratory – Explosive Technologies
Branch, Aberdeen, Proving Ground, MD 21005-5069, USA
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.
