Investigating the effects of simultaneous symmetrical impulsive loading on honeycomb sandwich panels with different core topologies

Abstract

In the design of structures, it is important that they have the ability to withstand loads. Sandwich panels have received attention due to their lightweight and good absorption. In this research, honeycomb sandwich panels with different core topologies were subjected to simultaneous impulsive loading, and the effect of the amount of loads and the distance between charges on the deformation was evaluated. Due to the high cost of conducting the experimental test, the finite element software has been employed. After validating with the experimental data, the values ​​of 0.5, 1, and 2 kg of selected charge in single and two-point loading at the sandwich panels with square, circular, and octagonal core topologies have been affected and the deformation of sandwich panels has been evaluated. In order to investigate the effect of the distance of charges from each other on the deformation, these are placed at 8, 10, and 12 cm from each other. Then, the amount of deflection of sandwich panels with single-point loading has been compared. According to the investigations, the best topology for absorbing loads is octagonal, so it has less displacement in single and two-point loading in the best case of 14.1 and 12.2 mm, respectively.