Barricade Influence on Blast Wave Propagation
SNPE CENTRE DE RECHERCHES DU BOUCHET VERT-LE-PETIT FRANCE
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As everyone knows, barricade is one of the most efficient means available to protect persons, goods and facilities against fragments. It is also an efficient solution to minimize blast hazards by reducing overpressure level just behind. Purpose of this study is to check that there is effectively an overpressure decrease behind barricade and to assess it. In order to improve our knowledge on this phenomenon, we analyzed scale model tests performed at Captieux south of France. These tests consisted in overpressure measurements in free field and behind barricades to compare them. During these tests a double barricade efficiency was also assessed. Simultaneously, numerical simulations were carried out with a two dimensional finite volume code based on Euler equations. Following parameters were used in this study NEQ Net Explosive Quantity, Shape and sizes of barricade, Scaled distance between charge and barricade. Computed and experimental results are in a good agreement.
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