Abstract

We present results from our numerical simulation of the dynamic response and deformation of 1m diameter circular DH-36 steel plates and DH-36 steel-polyurea bi-layers, subjected to blast loads. Different thicknesses of polyurea are considered, and the effect of polyurea thickness on the performance of steel plates under blast loads is investigated. For each polyurea thickness, we have simulated three cases: 1) polyurea cast on front face (loading face); 2) polyurea cast on back face; and 3) no polyurea, but an increase in steel-plate thickness such that the areal density remains the same in all three cases. Two types of loading are applied to the polyurea-steel system: (1) Direct application of pressure on the bi-layer system, (2) Application of pressure through a separate medium (polyurethane or water).

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