Modeling of the Non-Auditory Response to Blast Overpressure. Computer Model of Complex Waves Within an Enclosure and Their Biological Effects.

摘要

The repeated passage of pressure waves past a given point, following an explosion in an enclosure, results in the long and complicated pressure time histories called 'complex waves.' The waves are not only complex because of their temporal variation, but their effect on biological structures depends on the direction of each wave component. The ability to estimate injury under these circumstances represents one of the greatest challenges of biomechanical modeling. A mathematical model for the reflections of blast waves within an enclosure has been constructed based on the concept of mirror-like reflections of the wave front at each solid surface. The model accounts for the position and orientation of each surface and allows for the presence of openings, such as doors and windows. A simplified model for the venting of explosion product gases is also included. Keywords: Non-auditory responses to blast overpressures, Computer models, Explosions, Pressure waves, Blast injury, Weapons effects(Biological), Complex wave model. (JG)