Numerical Analysis on Hexagonal Honeycomb Sandwich Structure Under Air-Blast Loading

Abstract

Sandwich constructions with a honeycomb core have recently become popular for high strength and dynamic load. The purpose of this study is to look at the shock wave resistance performance of two distinct types of honeycomb core sandwich structures in terms of face plate deflection and energy absorption when subjected to a blast load. This study employed square and hexagonal honeycomb core structures to determine the minimal face deflection under blast conditions. The honeycomb sandwich panel is composed of steel that is very ductile. In the sandwich construction, both the front and rear plates are solid, and the core structure is of the shell type. To administer the air-blast loads of 1, 2, and 3 kg TNT, a 10-cm stand-off distance is used from the front face. The dynamic response of the sandwich constructions is determined using the ABAQUS/explicit finite element method (FEM). For both square honeycomb and hexagonal honeycomb core sandwich panels, the front and rear face plate deflections were measured. Under comparable blast loading circumstances, the front and rear plates of the hexagonal sandwich panel showed less deformation than the square honeycomb core sandwich panel.