Analysis of the Penetration Ability of Exponential Bullets on TPMS Structures with Variable Density

Abstract

The TPMS lattice structure is widely utilized in the military UAV field, thus it is imperative to investigate efficient methods for targeting the TPMS lattice structure. This paper conducts a numerical simulation to study the impact of exponential bullets on the penetration capability of lattice structures with varying thickness and density. Specifically, the analysis focuses on the penetration behavior of variable density Diamond structures designed using MATLAB and simulated using ABAQUS. The simulation results reveal that as the thickness of the lattice structure increases, there is an initial rise followed by a decline and then another increase in the increase rate of bullet velocity. Furthermore, it is found that the position and radius of the distortion axis significantly influence bullet velocity disparity, with deviation rates reaching 17.12 and 27.48%, respectively. Conversely, middle plane offset has minimal impact on bullet velocity difference, with a deviation rate of only 6.38%. These findings underscore the importance of considering adjustments to the distortion axis within a certain range when designing UAV structures in order to enhance their penetration ability.