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Example 46 - TNT Cylinder Expansion Test |
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Example 46 - TNT Cylinder Expansion Test |
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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.
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 (/MAT/JWL) |
| • | Hydrodynamic Johnson-Cook material law for the copper cylinder (/MAT/HYD_JCOOK) |
| • | Multi-Material, Fluid and Explosive material law (/MAT/LAW51) |
The simulation results are then compared to the experiment data.
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