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Response of box-type structure and effect of structural parameters on reflected pressure under blast load

The study presented herein includes finite element analysis of a box type structure subjected to blast loading using the coupled Eulerian-Lagrangian methodology to investigate the structural response. A comparative assessment of structural response observed from coupled Eulerian-Lagrangian and Unified Facility Criteria guidelines is presented. Furthermore, the effect of the structural parameters on reflected overpressure for different angle of incidence has been investigated and compared with that given in the Unified Facility Criteria. It is observed that the structural parameters significantly affect the reflected overpressure. The Unified Facility Criteria overestimates the response of structure in a certain region of angle of incidence while it underestimates the reflected pressure in the rest region of the angle of incidence.