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The three-dimensional instationary interaction of a spherical blast wave with a rectangular solid of dimensions of 2star2star4 m is numerically investigated with the SHARC-code. The blast loading is caused by a 7.3 kg TNT explosion at a distance of 3.5 m. The spherical detonation and development of the shock wave is computed separately two-dimensionally up to a radius of about 1 m. This state is transferred to the 3-D-computation as a starting condition. That is why the influence of the detonation products is taken into account. The box like structure is 80 cm above ground. In different planes the development of the instationary pressure distribution is analysed as well as the temperature distribution and the velocity vector field.

The three-dimensional instationary interaction of a plane step shock pulse with a rectangular solid of dimensions of 2star2star4 m being 80 cm above ground is numerically investigated with the SHARC-code. The shock Mach number is 1.363, the pressure ratio is p21=2.0 and the Mach number behind the shock is u2/a2=0.473. In various planes, also containing the body's surfaces, the development of the instationary pressure distribution is analysed. Interest is focused on three-dimensional effects. The computation is inspired by experiments at the German test facility Reiteralpe.