Experimental and numerical studies on the failure modes of steel cabin structure subjected to internal blast loading

摘要

Two series of experiments were conducted with different dimension and different masses of explosive. The failure processes of the side plate were recorded by using high-speed photography system. Damage features of the experimental results were analyzed. The results show that the damage degree increases with the increasing of TNT mass. In larger TNT mass cases, cracks produce in both the edge and the central of side plate, and some plates may eject out with relatively high launch velocity which are destructive to the adjacent cabins. During the deformation process, the edge and corner area of side plate may produce large deformation due to the intensified internal shock waves which is different from external explosion.