封装陶瓷形状对复合结构抗侵彻性能的影响

Ceramic/metal corrugated compound structures have excellent anti-penetration performance and wide application prospects in the field of light armor. The influence of the shape of embedded ceramic column on the anti-penetration performance of compound structure is studied through experiments and numerical simulation. The results show that the shape of ceramics affects the energy absorption and failure mode of structure, affecting the anti-penetration performance of compound structure. The trapezoidal ceramic can increase the loaded area of structure, thus making the back plate of structure absorb more energy of a projectile through plastic deformation. The failure mode of structure is ductile failure. Inverted trapezoidal ceramics penetrated by projectiles exert a squeezing effect on adjacent ceramic pillars, causing the load to propagate laterally. Ceramics inside the structure undergo large-scale damage. Protrusion of back plate is lower in this situation. And the failure mode of compound structure is erosion failure. The ceramics with different shapes improve the ability of compound structure to resist projectile penetration by changing the dynamic response mode of compound structure.