Polyurea Coated Steel Plates For Blast Mitigation In Armoured Vehicles

Increasing terror attacks and development of Improvised explosive devices (IEDs) has resulted in the development of protective structures for armored personnel vehicles(APV). These shaped plates either deflect or absorb the energy imparted to them. A well designed plate should absorb the energy as much as possible and transmit the least impulse to the vehicle structure. In this context the response of polyurea coated steel plates have recently been explored with the purpose of increasing the effectiveness of these shaped plates. Experimental studies have shown the capability of polyurea coated steel plates in mitigating the blast load. Hence there is scope for a numerical study on the polyurea coated V-shaped steel plates for finding its response. The objective of this study is to conduct FE based analysis of V-shaped steel plates coated with polyurea. The important parameters which affect the response of the plate are the mass of the explosive, the parameters of the V shaped plate and thickness of polyurea layer. The response variables under consideration are the deflection of the plate and imparted impulse. A numerical procedure validated for flat plates coated with polyurea, has been used for the above study. The results are helpful in identifying an optimal structure design for resisting blast loads.