FINITE ELEMENT ANALYSIS OF THE EXPLOSIVE BLAST RESPONSE OF HONEYCOMB SANDWICH STRUCTURES

Abstract

Nowadays, terrorist attacks are a concern, thus armoured vehicles or buildings use shields for improved security. To effectively design these kinds of crucial tools, blast resistance can therefore be increased. The two most frequent materials utilised for this type of protection are RIGID MATERIAL, which causes less deformation but also absorbs less energy, and SOFT MATERIAL, which causes more energy absorption but causes significant displacement. The cabin crew poses a risk while using either type of material. To minimise vibration transmission to the cabin crew, effective protection optimisation is being done to absorb energy as much as feasible and limit displacement. In order to do this, a honeycomb structure with two face shields that is composed of various materials, i.e. TNT blast loading was used to rolling homogenous armour steel (RHA STEEL) and aluminium (Al-5005-H34). A three-dimensional analysis using the dynamic explicit model and ABAQUS non-linear finite element algorithm to forecast both the structure’s displacement and the energy induced within it during the blast. To the improvement in protection and mass savings under the same TNT blast loading, the results of the honeycomb structure are then contrasted with the monolithic plate built of RHA Steel alone.