I am trying to model an experiment using ABAQUS which consists of a reinforced concrete I-beam which has been subjected to blast load. The explosive material is 110 kg TNT. I have modeled the blast load using the CONWEP incident wave feature of ABAQUS, and used Explicit solver with a 5e-3 seconds step time. Also the concrete is modeled using Concrete Damage Plasticity model. After running the analysis, I noticed that the explosion caused localized damage in the upper flange of the concrete I-beam, but THE BEAM DOESN'T SHOW ANY DEFLECTIONS, and the kinetic energy is almost 100 times lower than the expected value! In other words, the beam doesn't respond rapid enough to the loading.
Any help in this regard would highly be appreciated.