الفهرس 
Accidents historyOnly 14 pages are availabe for public view
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Abstract
As a result of repeated terrorist incidents around the world causing huge loss of property and human lives. While the threat of a conventional explosion charge is defined by two equally important elements, the charge quantity (weight), the standoff distance between the blast source and the target. Furthermore, most casualties and injuries sustained during explosions are not only caused by the pressure or heat resulting from a charge detonation but also, by fragmentation of walls, shattering of windows, and non-secured objects that are propelled at high velocities by the blast. Thus, protection of critical structures against blast load has become a critical issue.
The research objectives were to increase the building impulsive capacity against a blast load without any modification in the building structure; these objectives were achieved using a protective panel as a barrier between the blast load and the building. Herein the research considered a study to achieve a panel design that could prevent a blast wave from reaching the building structure and minimizing the pressure behind the panel, besides a withstanding panel against consecutive explosions after the main blast.
The research investigates the alternation of design parameters to achieve the desired panel design including the filling material, thickness of panel’s plates and separation distance between the front and rear plates. This thesis includes different models to be tested against a breaching charge of 50 kg of TNT at 1m standoff distance. The design of Protective panels consists of two steel plates with 3 m length and 3 m height. The structural design of the panel includes plate thickness, distance between front and back plate and filling material.
Various panel designs were examined with different filling materials, in the case of without filling the two plates will act as a backup mechanism, however in the case of concrete filling the two plates share the load. Moreover, strengthen mechanism was implemented for the plates using shear connectors, horizontal stiffeners and horizontal & vertical stiffeners. This mechanism improved the deformation of both plates to reduce the plastic region without any failure in the panel. Panel design approach is accomplished using the finite element analysis through ANSYS AUTODYN.
In conclusion the deformation decrease through the increase of plate thickness and the usage of concrete as filling material, as well as the strengthen mechanism using horizontal and vertical plates.