Home // International Journal On Advances in Systems and Measurements, volume 11, numbers 1 and 2, 2018 // View article
Authors:
Burghard Hillig
Arash Ramezani
Hendrik Rothe
Keywords: shock wave; attenuation; blast; vehicle protection; ANSYS AUTODYN
Abstract:
This paper describes the numerical investigations of a directed blast of 12.5 kg Pentaerithrytoltetranitrate and a 2.6 kg Trinitrotoluene heavy mortar grenade. The propagation of the resulting shock wave in the direction of a vehicle model is investigated. Various changes of the properties of the surrounding air have been made to produce a second, transient medium. The results are intended to answer the question as to whether and to what extent the rapid heating of ambient air offers the possibility to attenuate the amplitude of an approaching shock wave. A developed test set-up was used to simulate and record the pressure profiles by simulated pressure gauges. To get an optimal configuration, a parameter study of the properties of the second medium has been performed. As a result, as well in the case of 12.5 kg explosive ordnance as with the heavy mortar grenade, a reduction of the peak overpressure compared to the undisturbed propagation of the shock wave could be determined by about 35 % when heated rapidly to 3000 K.
Pages: 153 to 165
Copyright: Copyright (c) to authors, 2018. Used with permission.
Publication date: June 30, 2018
Published in: journal
ISSN: 1942-261x