ABSTRACT
This chapter aims to numerically reproduce the damage effects caused by a vented explosion in a multi-storey framed reinforced concrete structure with masonry infill walls. ANSYS AUTODYN® has been used to manage both the structural and the fluid-dynamic issues and to make feasible their interactions. The analysis focuses on the gas mixture usually used for domestic purposes mainly consisting by methane and completed by ethane, propane and n-butane. The thermochemical description of the domain is primarily linked to the evaluation of the maximum energy released with the reaction. The model is composed of the room and air volume occupied by the building. The structure model was composed of the rein-forced concrete structure and masonry infill walls. Smaller walls are the preferential element of rupture and so there is a minor damage of the main masonry. The tensile strength was considered like the steel strength and compressive strength as concrete.
