Numerical Study of Experiment Setup for Aluminum Foam Sandwich Construction Subjected to Blast Load

Abstract

Numerical study of experimental setup to evaluate aluminum foam sandwich construction undergoing blast loading is introduced. Aluminum foam sandwich has excellent compression characteristic on absorbing blast impact energy through massive cellular deformation. A case study on an add-on structure of armored vehicle floor is discussed. A finite element prediction using LS-DYNA on the proposed blast experimental setup was constructed to calculate peak force and acceleration. The aims of this preliminary study are to obtain load cell and accelerometer sensors capacity that installed on the setup when subjected to 8 kg TNT blast loading. The load cell is placed on the leg support and the accelerometer is placed on the central point of the occupant side steel. The prediction results give maximum compression load up to 631 kN so that the available load cell for this capacity is 9107A (Kistler) that has maximum compression load 700 kN. For accelerometer, the maximum acceleration is 16114 G. The available accelerometer for this capacity is 350D02 (PCB) that has maximum and minimum acceleration up to ±50.000 G.