Experimental investigation of a novel blast wave mitigation device

Article type: Research Article

Authors: Su, Zhenbi | Peng, Wen | Zhang, Zhaoyan | Gogos, George | Skaggs, Reed | Cheeseman, Bryan | Yen, Chian Fong

Affiliations: Department of Mechanical Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA | Army Research Laboratory, Aberdeen Proving Ground, MD 21005, USA

Note: [] Corresponding author. Tel.: +1 402 472 4993; Fax: +1 402 472 1465; E-mail: zzhang5@unl.edu

Abstract: A novel blast wave mitigation device was investigated experimentally in this paper. The device consists of a piston-cylinder assembly. A shock wave is induced within the cylinder when a blast wave impacts on the piston. The shock wave propagates inside the device and is reflected repeatedly. The shock wave propagation process inside the device lengthens the duration of the force on the base of the device to several orders of magnitude of the duration of the blast wave, while it decreases the maximum pressure over an order of magnitude. Two types of experiments were carried out to study the blast wave mitigation device. The first type of experiments was done with honeycomb structures protected by the blast wave mitigation device. Experimental results show that the device can adequately protect the honeycomb structure. A second type of experiments was done using a Hopkinson bar to measure the pressure transmitted through the blast wave mitigation device. The experimental results agree well with results from a theoretical model.

Keywords: Shock wave, mitigation device, Hopkinson bar

DOI: 10.3233/SAV-2009-0487

Journal: Shock and Vibration, vol. 16, no. 6, pp. 543-553, 2009