Abstract: Most of the current research on the impact resistance of composite materials has been carried out from the perspective of material energy dissipation, which is mainly in the form of deformation and fracture of the material. From the idea of material and structure integration, this paper proposes a new composite panel structure, which is based on the general impact resistant composite panel (called impact panel in this structure), and adds a sliding body placed inside the composite panel. Under the effect of low velocity impact, this structure form can increase the sliding body motion energy consumption in addition to the deformation energy consumption of the material, and improve the impact resistance of the composite plate. Based on the existing research, according to the characteristics of the structure type, the influence of the impact energy, the sliding angle of the sliding body, the mass of the sliding body and the thickness of the impact panel on the energy dissipation effect of the structure is numerically analyzed. The numerical simulation modeling and calculation were carried out by ABAQUS software, and the correlation analysis of the simulation results showed that the new energy dissipation mode of energy dissipation by sliding body motion is feasible. The best correlation factors with the sliding body energy dissipation effect are sliding angle, sliding body mass, impact energy, and thickness of the impact panel in order. Among them, the energy consumed by the sliding body is positively correlated with the impact energy, positively correlated with the sliding angle, negatively correlated with the sliding body mass, and negatively correlated with the thickness of the impact panel. Finally, the slider energy dissipation formula based on multiple linear regression method is established.

Key words: composite panels, low-velocity impact, finite element simulation, energy dissipation, kinetic energy, correlation