Abstract. For several decades, a blast wave due to explosive detonation has been investigated extensively. Base on a significant amount of experimental data, the blast wave propagation has been predicted at specific conditions. However, only spherical shape of explosive has been considered in most studies. Recently, it was noted that the shape of explosive influences the blast wave propagation significantly. In this study, a finite element analysis was carried out to investigate the effect of the shape of explosive on the blast wave propagation. Two different shapes of explosive were compared in blast wave propagation; spherical and cylindrical shape. It was found that the spherical and cylindrical shape blast show different characteristics in the blast wave propagation. The spherical blast showed the isotropic wave propagation as verified by experimental data. However, the cylindrical blast showed more concentrated and faster propagation in the axial direction.
The effective design of protective structures demands an understanding of complex physics processes involving various parameters. Thus, a considerable amount of test data is required. Because direct tests are usually very expensive, analytical methods have been used instead. Extensive analytical studies have been conducted on the effective design of steel structures. However, studies are limited on the influence of explosion conditions on the behavior of steel structures, which is the primary subject of this study. This study investigated the effects of explosive weight and steel thickness on the behavior of steel plates. It was found that explosive weight and steel thickness significantly influence the midpoint displacement, while the explosive weight changes the size and shape of the separated and remaining parts.
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