关键词: 阻尼材料, 复合靶板, 数值仿真分析, 高速冲击, 复合材料

Abstract: A kind of composite target composed of boron carbide ceramic, UHMWPE laminate and damping material is proposed. The numerical simulation analysis is carried out by using LS-DYNA dynamics software to investigate the performance of the target under the high-speed impact of 12.7 mm armour-piercing explosive incendiary projectile, and the feasibility of the numerical simulation is verified by experiments. The relationship between the anti-penetration performance of the target plate and the structural geometric parameters is further studied, and the optimum distribution position and thickness of the damping material are explored. The results show that with the increase of ceramic thickness, the kinetic energy of the target plate and the ballistic performance index increase linearly, and when the thickness of UHMWPE laminate is larger, the anti-penetration performance of target plate is improved more obviously by increasing its thickness. Under the condition of the same area density, compared with increasing the thickness of ceramic or UHMWPE laminates, the ballistic performance index of the composite target plate is the highest and the resistance to high-speed penetration is the best when it is coated with 1 mm back-layerdamping material, which lays a foundation for the wide application of damping material as damping layer in the field of high-speed impact resistance.

Key words: damping material, composite target, numerical simulation analysis, high speed impact, composites