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Theoretical and Applied Mechanics
University of Illinois
Abstract-
We will discuss recent developement in detonation shock dynamics and
their application to the design of condensed phase explosive systems.
Detonation Shock Dynamics (DSD) assumes that the detonation is weakly
curved and propagates in a nominally quasi-steady manner and that one
can use reduced description of the shock dynamics that relate the shock
normal velocity, total curvature and higher order derivatives of the
shock motion, such as the shock acceleration. We will review some recent
measurements of shock dynamics made from direct numerical simulation and
show how that compares favorably with analytical calculations of
detonation structure that use weak curvature asymptotics. We will
describe some recent work on how DSD-based descriptions can be obtained
for explosives real (non-ideal) equation of state. We will discuss new
hybrid computational models that use the program burn algorithm, that
incorporate DSD-based evolution laws for the evaluation of the program
burn source terms. We will discuss DSD-based calculations that develop
pressure maps for the interior of explosive geometries and how these
maps might be used to carry out precision cutting of metals.
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