Assessment of blast loads on structures

BIBIANA LUCCIONI; DANIEL AMBROSINI; RODOLFO DANESI

Florianópolis

Congreso; Impact Loading of Lightweight Structures; 2005

The evaluation of pressures and impulses produced by blast loads with the aid of hydrocodes is studied in this paper. Numerical results are com- pared with those obtained with analytical existent expressions for di®erent scaled distances and boundary conditions. In particular, the capacity of both methods to capture multiple re°ections of the blast load is analyzed. The e®ects of mesh size on pressure and impulse distribution are also studied. Some interesting conclusions regarding the determination of the best mesh size for calculus of actual events are obtained. A computational dynamic analysis was carried out over the congested urban environment that corre- sponds to the opposite rows of buildings of a block, in the same street. The results obtained for di®erent positions of the explosive charge are presented and compared.