关键词: 阻尼材料, 软体防弹靶板, 抗冲击性能, 遗传算法, 优化, 复合材料

Abstract: With the upgrading of firearms and weapons, the penetration ability of bullet is increasing. The impact finite element model of surface damping/carbon fiber/UHMWPE fiber soft bulletproof target plate is established by ANSYS/LS-DYNA. Based on the finite element model, the experimental platform of ordinary bullet penetrating UHMWPE fiber laminate is set up. By comparing the experimental results with the simulation results, the validity of simulation method is verified. By changing the laying mode of fiber layer through ANSYS, four different laying angles and eight laying sequences are designed. The genetic algorithm is used to optimize the approximate model to obtain the lightweight and high-strength soft bulletproof target plate. The results show that when the fiber laminates are [0°/30°/60°/90°/120°]_n, the fiber laminates are placed on the projectile surface, and the UHMWPE fiber laminates are placed on the back projectile surface, and the proportion of UHMWPE fiber laminates is high, the bulletproof performance of the target plate is better. The optimized target plate of 0.6 mm surface damping/5.1 mm CF laminated plate/9.4 mm UHMWPE laminatedplate can effectively resist the penetration of 7.62 mm ordinary projectile. Compared with the armored steel target plate, the surface density of the target plate decreases by more than 53.4% under the same bulletproof performance.

Key words: damping material, soft bulletproof target plate, impact resistance, genetic algorithm, optimization, composites