Analysis of charge shape influence on blast pressure (CROSBI ID 725601)
Prilog sa skupa u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Draganić, Hrvoje ; Lukić, Sanja ; Radić, Ivan ; Gazić, Goran ; Jeleč, Mario
engleski
Analysis of charge shape influence on blast pressure
Blast wave intensity depends on several parameters, namely: explosive material type, charge weight, shape and orientation, detonation point position, detonation initiator type (primary explosive type), the position (distance) of the explosive charge in relation to the intended target (standoff distance) and ground surface. Environmental conditions, particularly air temperature, humidity and atmospheric pressure, also influence blast pressures. It is difficult to accurately predict the blast wave action on target structures if all of these parameters are considered. This research concentrates on the influence of the shape of the explosive charge on blast pressure measurements. Spherical and hemispherical charge shapes are considered usual and, as such, accurate and reliable analytical expressions for the blast wave pressure approximation are available. The form and propagation of spherical charge blast waves are considered to have been thoroughly studied and known. In today’s urban and guerrilla warfare, speed of action is a crucial factor. Rendering the careful shaping of explosive charges is time consuming and unnecessary, hence the need for investigating different charge shapes, other than spherical. This investigation consisted of field range experimental measurements of the incident (freefield) and reflected pressures caused by detonating differently shaped charges. The shapes considered were: spherical, cylindrical and rectangular. The experiments were numerically validated and verified using ANSYS Autodyn hydrocode software. Numerical simulations utilised a coupled Euler–Lagrange planar solver, using an ideal air environment and PEP500 explosive material. Charge shapes varied, according to the experimental outline, and the measuring points were constant, to allow comparison of the measured data.
blast load ; charge shape ; incident pressure ; ANSYS Autodyn
Konferencija održana on-line zbog pandemije COVID-19 virusa i ratnog stanja u Ukrajni.
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Podaci o prilogu
85-96.
2022.
nije evidentirano
objavljeno
10.2495/HPSU220081
Podaci o matičnoj publikaciji
WIT transactions on the built environment
Hernández, Santiago ; Schelyer, Graham
Southampton : Boston (MA): Wessex Institute of Technology Press
978-1-78466-471-8
1746-4498
1743-3509
Podaci o skupu
High Performance and Optimum Structures and Materials Encompassing Shock and Impact Loading (HPSM/OPTI/SUSI 2022)
predavanje
11.07.2022-13.07.2022
Lisabon, Portugal
Povezanost rada
Građevinarstvo, Temeljne tehničke znanosti