Blast Event Simulations

Main Characteristics

Visualization showing validated capabilities for computing the response of the structure and the occupant to loads from explosion

MES has a strong record in utilizing LS-DYNA for computing the loads from an explosive threat which can also include projectiles. The explosive threat can be placed above ground or it can be buried in the soil. The size of the explosive, its type, the depth of burial, the soil conditions, and the properties of the projectiles determine the loads from the blast.

The response and the integrity of a structure (such as a vehicle) that is subjected to the explosive load is determined. Models of occupants can be placed inside the vehicle model for identifying injury levels and survivability.

Rendering of blast event simulations and design of blast resistant structures.

MES has also developed a Blast App for rapid vulnerability assessment in urban environments and high attendance events. The development can determine the explosive loads applied on buildings in urban environments when a large explosive (i.e. car bomb) is detonated, and it can also perform a lethality assessment for humans when a threat that combines explosive and shrapnel is detonated in a crowded area.

Blast event simulation results produced by MES have been compared successfully with test data for several different scenarios.

Typical Applications

Graph showing 1/50 scale test corresponding to an equivalent street width of 15m with a charge size of 1,624kg TNT

Blast simulations can be used for hardening a vehicle structure in order to better withstand loads from an explosion. The value of blast mitigation materials and/or the strategic addition of armor can be evaluated.

Modifications of the interfaces between the vehicle and its occupants are identified for reducing the loads experienced by the occupants through simulation. Such design changes lead to increased survivability.

Screenshot of blast app for vulnerability assessment

The Blast App is used for determining the extent of the lethal and injury zones in a high attendance event due to the detonation of an improvised explosive device.

The Blast App determines the blast loads experienced by building structures in an urban environment from the detonation of a large explosive (i.e. car bomb). This information is used for determining positioning of obstacles for limiting vehicular access, determining safety protocols for building evacuation, etc.