Details of Blast Interaction with Structures
PRINS MAURITS LABORATORIUM TNO RIJSWIJK (NETHERLANDS)
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The paper addresses details of blast interaction with structures. It is based on three test programmes performed in recent years at TNO Prins Maurits Laboratory. These programmes were Effectiveness of blastwalls. This programme was aimed at optimising the reduction in blast strength from large calibre weapon firings that can be gained with blastwalls. Shock Interaction with Multiple Obstacles. This programme is aimed at understanding the reduction in shock strength as it passes obstacles, in particular when a blast wave enters a buildup area. Numerical simulations were made, which were validated and complemented by experiments in a shock tube. Entering of shock in a building. This programme was aimed at understanding the internal load on a building caused by a blast wave when it enters through a broken window. Experiments were performed with a chamber placed in front of our 2 m diameter blast simulator. Although all the fundamentals of shock interaction with structures are known, practical situations produce such a complicated pattern of reflections and rarefactions that prediction of the interaction becomes difficult. This paper focuses on the details of the interaction process and on the overall results of the programmes.
- Structural Engineering and Building Technology