Abstract:
There is an urgent need to develop light-weight protective structures with a sufficient protection to
prevent the damage occurring during extreme loading events such as blast and ballistic impacts. This
study is a part of ongoing research to develop light weight amour materials which can sustain under
those severe conditions. Numerical modelling with explicit finite element code LS-DYNA has
performed with realistic geometries. Ballistic protection class BR7 in European norm EN 1063
considered, thus penetration of different shaped projectiles through thick steel plates was examined.
Since the geometries and materials of the projectiles have a very significant influence on the outcome
of this research detail modelling of the projectiles was performed. For the purpose of this paper,
perforation mechanism of 7.62mm APM2 bullet through 6mm thick Weldox 460E high strength
structural steel plate was examined. Largrangian methods combined with Johnson-Cook material
model available in the LS-DYNA were used for the numerical simulations. Finally the ballistic limit
curve for the 6mm thick Weldox 460E plate perforated by APM2 bullet was obtained. Results were
compared with the analytical models.
