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Simulation air blast load over a laced reinforced concrete with wood cover in Abaqus has been studied in this simulation. The concrete beam is modeled as a three-dimensional solid part. The laced steel reinforcements are modeled as wire parts. The wood cover is modeled as a shell part with some layers. You can see figures of the assembled parts below
To model concrete behavior under the severe load, Concrete Damaged Plasticity material model is selected. The Concrete damage plasticity material model represents a constitutive model which is based on a combination of theory of plasticity and theory of damage mechanics. This material model is often used in solving geotechnical problems due to its realistic description of mechanical behavior of concrete material. The elastic-plastic model is selected for the steel reinforcements. The wood also is considered as an brittle material with damage behavior
To model blast load, the CONWEP method is a good choice to apply the TNT pressure on the surface of the composite beam. The proper interactions, constrains, boundaries, and meshes are assigned to the parts
After the simulation, all results such as stress, strain, wood damage, tension and compression damage, failure, force-displacement diagram, and others are available. You can see some figures for the results below
