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 s ignificantly greater structural damage than predicted from the free-fi eld blast wave characteristics. Under certain conditions, the superpos ition of multiple reflections produces a pressure-frequency spectrum t hat can critically damage important structural components. For detaile d analysis of air-blast wave-structure interaction, the analyst must h ave computational tools to calculate both the complex hydrodynamic str uctural 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 p resented for structural response and damage analysis of naval panels s ituated in a reentrant corner confinement.