Author(s)

SOPHIE TRÉLAT, MICHEL-OLIVIER STURTZER, LAURE HEUDIER, JÉRÔME DAUBECH

Abstract

In this work, we focus on the third item: the use of obstacles to mitigate the effects of an explosion. The aim of the study is to precisely characterize the interaction of an explosive blast wave with an obstacle used as a barrier. The obstacle is considered as non-deformable. In particular, the effect of the shape of the obstacle on the blast wave propagation and maximum overpressure is investigated through the notion of wavelength. To achieve this, various shapes of rigid reduced-scale obstacles were exposed to overpressure waves generated by different types of blast sources: parallelepipedic, cylindrical and hemicylindrical reference shapes and a straight wall. This innovative approach will contribute to proposing guidelines on geometrical and physical dimensioning of protection barriers so as to improve the efficiency of protective means in terms of blast effects mitigation.

Keywords

blast, explosion, mitigation, barrier, security and safety, innovative methodology