An Explosive Driven Shock Tube-Based Laboratory Scale Test for Combined Blast and Fragment Impact Loading

This work is a part of larger research effort to better understand the combined effect blast wave and fragment impacts following detonation shrapnel bomb. It known that time interval Δt, which represents difference in arrival between front at position given target object, has significant influence on its response mode. paper presents insights into establishment laboratory scale technique generate loading single or multiple projectile target. The objective setup control Δt certain extent so different modes tested structures can be investigated. In order reduce complexity associated with random nature shrapnel, steel ball bearings are used simulate projected fragments. They embedded solid explosive charge, detonated entrance an driven shock tube. experimental demonstrates it possible orient path inside tube when aiming positioned exit. guarantees generation well-controlled planar characterized by peak pressure, impulse exit mass charge diameter velocity study shows for same mass, increases increasing diameter. experiments numerically simulated based Eulerian approach using LS-DYNA finite element software. computational model allows reveal details about flight characteristics Both numerical data show parameters interval.