DAMAGE ANALYSIS WITH ADINA OF NAVAL PANELS SUBJECTED TO A CONFINED AIR-BLAST WAVE

The interaction of air-blast waves with naval warships can result in significantly greater structural damage than predicted from the free-field blast wave characteristics. Under certain conditions, the superposition of multiple reflections produces a pressure-frequency spectrum that can critically damage important structural components. For detailed analysis of air-blast wave-structure interaction, the analyst must have computational tools to calculate both the complex hydrodynamic structural loading from air-blast wave-structure interaction and also the associated structural response. This paper describes the method used to couple the ADINA nonlinear dynamic structural response code with a hydrodynamic air-blast loading code. Two representative examples are presented for structural response and damage analysis of naval panels situated in a reentrant corner confinement.