Evaluating Numerical Approaches in Explosion Modelling Using A Surface-laid Mine

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7-2-1.jpg

Evaluating Numerical Approaches in Explosion Modelling Using A Surface-laid Mine

9.95

Author(s): D. Fiserova; Amer Hameed; John G. Hetherington; S. Prochazka; Timothy A. Rose
No pages: 5
Year: 2004
Article ID: 7-2-1
Keywords: firepower and protection, mine protection, vehicle protection
Format: Electronic (PDF)
 

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Abstract: Within the mine-blast research community, there is an increasing desire to enhance the efficiency and efficacy of mine-resistant vehicles, albeit in a cost-effective way. An approach that mirrors this requirement is presented in this paper. The explosion of an antitank mine is modelled and analysed by using the non-linear dynamics analysis software, AUTODYN. The initial simulation setup consisted of a hemispherical charge laid on a 'perfectly reflective' plane. Two equations of state for explosive products were studied, with the first one being the commonly used empirical equation of state, Jones-Wilkins-Lee (JWL). The second study applied the ideal gas equation of state, often used for simplification in complicated models. The mesh sensitivity study was carried out. Two parameters of blast waves, namely maximum pressure and specific impulse, are evaluated and compared with accessible experimental data obtained from CONWEP. Consequently, an explosion of a mine laid on sand was modelled using JWL EOS and blast parameters were compared with the previous model.