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Evaluation of Peak Overpressure and Impulse Induced by Explosion  

Yoon, Yong-Kyun (세명대학교 소방방재학과)
Publication Information
Explosives and Blasting / v.34, no.4, 2016 , pp. 28-34 More about this Journal
Abstract
Empirical model, phenomenological model, and CFD model have been used to evaluate the blast effects produced by explosion of explosives, flammable gas and liquid or dust. TNT equivalence method which is one of empirical models has been widely used as it is simple. In this study, new peak overpressure-scaled distance and scaled impulse-scaled distance equations are induced through fitting data from the curves given by TNT equivalence method. If the TNT equivalent mass is calculated, it is possible to estimate the peak overpressure and impulse using the regression equations. Differences of peak overpressure with yield factor which is a component of TNT equivalence method are found to be great in near-by distances from explosion source where the increase in overpressure is very steep, but the differences are getting smaller as the distances increase.
Keywords
TNT equivalence method; Peak overpressure; Impulse; Scaled distance;
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