Numerical approach using the FEM has been
used to model the behaviour of the reinforced concrete
specimen subjected to the pressure blast wave. The
concrete structure is a slab freely supported around the
perimeter by a steel plate and a concrete base. A
simplified 3D blast model has been used, which involves
the pure Lagrangian approach of FEM. The analyses
have been conducted using explicit solver. 3 different
non-linear material models of concrete have been used to
capture the concrete behaviour: CSCM (Continuous
surface cap model), Schwer Murray continuous surface
cap model, and JHC (Johnson-Holmquist-Cook) material
model. Influences of various mesh sizes on the final
results (crack patterns, vertical deflection, strain-time
dependence) are being monitored, compared with
physical experiment data and discussed.Ostrav
