Analysis of Energy Absorption in Composite Sandwich Panels with Different Core Structures Under Impact Loading

This paper investigates the behavior of composite sandwich panels with cellular cores, including hexagonal, square, triangular, and circular structures, against projectile impact. The main objective of this study is to compare the energy absorption of these panels by measuring the residual velocity of the projectile after impact with each sandwich panel. This analysis is conducted to evaluate the mechanical performance of different cores in improving impact resistance and to provide an optimal design for such structures. Simulations of the projectile impact on the panels were performed using Abaqus software and the finite element method (FEM). In these simulations, different cores with varying geometric and mechanical properties were modeled to examine the effect of different cellular structures on energy absorption and the reduction of projectile speed after impact. The results demonstrate that various cellular cores exhibit different performance in energy absorption during impact. However, each core has its own advantages and disadvantages, which, depending on the application and design requirements, can be utilized in various industries. This study shows that selecting the most suitable core structure for composite sandwich panels can significantly improve their impact resistance and performance, and contribute to the optimal design of lightweight and durable structures in different industries.

کلیدواژه ها:

Composite Sandwich Panel ، Core Material ، Energy absorption ، Impact ، Mechanical Properties.