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The present study tests and uses the LS-DYNA explicit solver to replicate explosive tests of rein... more The present study tests and uses the LS-DYNA explicit solver to replicate explosive tests of reinforced concrete slabs subjected to various charge weights of TNT close-in explosions. The numerical model includes slab (with rebar), immediate ambient air, supporting timbers, and TNT. Reinforced concrete slab was modeled with Lagrange mesh, while the TNT and air were modeled with Arbitrary Lagrange-Euler (ALE) mesh. Release III of the Karagozian & Case (K&C) concrete damage material model (*Mat_72R3) with strain-rate enhancement of strength profile was used for concrete; kinematic hardening material model was used for steel reinforcement; equation of state for air was defined as linear polynomial; JWL equation of state was adopted for explosive TNT. The concrete slab was subjected to explosions of 1kg, 2kg, and 3kg TNT equivalent explosive. Simulation results were compared with experimental data. The sizes of the central primary damage region (diameters for crater, through hole, and sp...
The present study tests and uses the LS-DYNA explicit solver to replicate explosive tests of rein... more The present study tests and uses the LS-DYNA explicit solver to replicate explosive tests of reinforced concrete slabs subjected to various charge weights of TNT close-in explosions. The numerical model includes slab (with rebar), immediate ambient air, supporting timbers, and TNT. Reinforced concrete slab was modeled with Lagrange mesh, while the TNT and air were modeled with Arbitrary Lagrange-Euler (ALE) mesh. Release III of the Karagozian & Case (K&C) concrete damage material model (*Mat_72R3) with strain-rate enhancement of strength profile was used for concrete; kinematic hardening material model was used for steel reinforcement; equation of state for air was defined as linear polynomial; JWL equation of state was adopted for explosive TNT. The concrete slab was subjected to explosions of 1kg, 2kg, and 3kg TNT equivalent explosive. Simulation results were compared with experimental data. The sizes of the central primary damage region (diameters for crater, through hole, and sp...