PSI - Issue 14

S.Thalapathi Raj et al. / Procedia Structural Integrity 14 (2019) 395–402 S Thalapathi Raj / Structural Integrity Procedia 00 (2018) 000 – 000

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Damage injury levels Subdivision of structures.

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The Outputs shall be in the form of 

Damage/ injury tables,

Before and after blast displays,

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 pressure and damage/injury contour plots and  Damage/ injury-versus-distance graphs. The damage to each structure, as well as the injury to each personnel can be presented graphically using a color-coding scheme. The damage classes are mentioned below  Red for Class A & B : Complete collapse, structure reduced to rubble/ Structure damaged beyond repair  Orange for Class C : Serious damage, Structure not usable until repaired  Yellow for Class D : Structural damage, but building partially usable while being repaired  Green for Class E : Building is safe / Non structural damage such as cracked plaster & Broken windows.

Fig 2 Without roof

Fig 3 With Roof

After entering the required input parameters, the analysis was carried out. The output parameters like blast pressure colour contours, damage criteria in terms of graphical display, blast parameters at various nodes are generated which are shown in the charts and reports. The graphical displays of structural damages are shown in the fig 4. 4. High Explosive Structural Damage Reports Specialized explosion modelling software like HEXDAM and HEXFRAG allows organization to input potential explosion scenarios based on the trial setup and quantity of explosives as well as the fragment pattern of the ammunition to determine the blast parameters as well as the structural damage effects. The structural damage levels and the relevant damage percentages of each structure in the experimental bay and the nearby facility are shown below.