The Cylinder Expansion Test is an experimental test used to characterize the
adiabatic expansion of detonation products. It allows determining JWL EOS parameters.
It consists in a copper cylinder filled with an explosive (TNT). Detonation is initiated at the
bottom of the explosive with a planar detonation wave. It propagates along cylinder
axis and radial expansion of the copper cylinder is measured at a given point of
external surface. Figure 1.
In order to simulate this experience, a model is created with the following
details:
3D mesh of a quarter-cylinder with eight node brick elements
Jones-Wilkins-Lee Equation-of-State for TNT detonation products
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Hydrodynamic Johnson-Cook material law for the copper cylinder
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Multi-Material, Fluid and Explosive material law
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The simulation results are then compared to the experiment data.
