ACE provides a wide range of analysis services to address potential terrorist attacks
involving explosive devices. Working with intelligence data or facility procedural
information, our staff can formulate the most probable and effective points of attack and
determine how to best protect from such attacks. We can determine the blast loading
on structures and equipment and assess the damage as well as work with your security personnel
to formulated perimeter security and vehicle search strategies.
In the building example below you can see the effects of a truck bomb detonated between two buildings. The second building prevents the blast wave from expanding freely away from the source thereby causing the loads on the target building to be increased. The windows on the target building were entered into CEBAM with failure criteria which will allows then to fail if the blast load meets or exceeds this criteria. As can be seen the blast wave has failed the windows on the blastward side of the building and is beginning to leak inside of the target building.
In the building example below you can see the effects of a truck bomb detonated between two buildings. The second building prevents the blast wave from expanding freely away from the source thereby causing the loads on the target building to be increased. The windows on the target building were entered into CEBAM with failure criteria which will allows then to fail if the blast load meets or exceeds this criteria. As can be seen the blast wave has failed the windows on the blastward side of the building and is beginning to leak inside of the target building.
Representation of
buildings in CEBAM.  |
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Pressure contour along a cut plane and the progression of the blast
inside the building.
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 A pressure isosurface denoting the blast front. |
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Representation of a Nuclear Power Plant in CEBAM. The red box represent the location
of a truck bomb. |
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Contour of pressure along the ground shortly after denotation. |
The nuclear power plant example above illustrates the usefulness of performing a what-if scenario study. The what-if study was conducted on vehicle search and entry locations. Truck bombs were placed at these location to determine the effects on critical infrastructure at the power plant. In the location show above the blast is channeled between the reactor building and other buildings causing very large overpressure on critical structures near the reactor building.
These two example illustrate that even in an environment that is not particularly complex the effect of blast and object interaction can be very important. CEBAM models the real situation, it is 3D and takes into account the effects of blast focusing, channeling, shielding, and reflections which is not possible in program or analysis methods that are based on a set of empirical blast curves.
