Spherical vessel subjected to explosive detonation loading

The following work utilizes a calculation method for the design of spherical containment vessels for pressure gases likely subjected to internal detonation. A centrally initiated explosion within the vessel is taken into account and the history of pressures on the internal vessel wall is investigated by means of the fundamental compressible fluid dynamics, for which a non-viscous perfect gas is assumed. The obtained differential equations are integrated with explicit finite difference techniques, introducing artificial viscosity. The response of vessel is decoupled from the fluid and it is determined by a dynamic finite element code of explicit type; the investigated material is considered to have an elastic-plastic behaviour. Comparison with data found in references on PBX-9404 high-explosive induced explosions confirms the calculation method developed.