Abstract
A review of external blast loads on structures modeling methods is presented in the paper. Also, numerical simulations of explosions in an urban scenario were done in software Ansys AUTODYN, and compared to experimental data. Recommendations were given regarding the use of numerical simulations in blast wave parameter calculations for the urban environment, as well as suggestions for further research.
Highlights
After the explosion, the detonation products expand very fast, creating a shock wave with discontinuous pressure peak
A review of external blast loads on structures modeling methods is presented in the paper
Numerical simulations of explosion in an urban scenario were done in software Ansys AUTODYN, and results compared to experimental values
Summary
The detonation products expand very fast, creating a shock wave with discontinuous pressure peak. When structures are impacted by this wave, they are dragged away from the detonation point, and after that pulled back towards this point. Damage on the structure during this short process depends upon large number of influencing factors. The most important parameters of explosive shockwaves are maximum overpressure value (blast wave force impacting a surface of the structure) and impulse of the blast (area beneath the pressure-time curve of a wave in positive phase) [2,5]
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