Workshop: Simulation Air Blast Explosion Over The Composite Panelconcretetitanium Foam In Abaqus

In this tutorial, the simulation of an air blast explosion over a composite panel made of concrete and titanium foam is performed using Abaqus. The concrete and titanium foam components are modeled as three-dimensional solid parts. The titanium foam acts as an energy absorber.

To represent the titanium foam behavior under high-intensity loads such as detonation and impact, the Crushable Foam model is used. The foam is defined as an elastic material with isotropic crushable plasticity and hardening. This model can accurately predict the foam’s compaction during the explosion.

For the concrete layer, several options are available in Abaqus to describe its brittle behavior, such as Concrete Damage Plasticity, Brittle Cracking, Johnson-Holmquist, and Johnson-Holmquist-Cook models. These models help predict progressive damage and failure of concrete under blast loading.

A Dynamic Explicit analysis procedure is selected, which is suitable for high-speed impact and explosion simulations. The CONWEP method is used to define the air blast load. A Tie Constraint is applied between the titanium foam and concrete layers to ensure proper interaction. The sides of the panel are fixed as boundary conditions. A fine mesh is recommended to capture detailed damage and failure behavior accurately.

After running the simulation, various results such as damage variables, failure patterns, stress, and strain distributions can be obtained. Example result figures are shown below.