Research And Simulation Of Anti-penetration Performance Of Ceramic/fiber Composite Armor

With the development of the weapon industry,the requirements for the ballistic performance of military protective materials have become higher.Safer,lighter,and more comfortable ballistic materials have become the mainstream of research.Compared with traditional protective armor,ceramic-fiber composite armor has more advantages,such as better energy absorption,lower surface density and better protection effect.In order to produce a more efficient and lightweight armor plate,this paper uses an armor-piercing bullet with a diameter of 12.7 mm as the impact body.The structure of armor plate is designed and researched by simulation and ballistic experiment.Firstly,design the different material and structure of the ceramic panel and fiber backplane.ABAQUS was used to simulate the impact of the armor plate.Then,on the basis of simulation,ceramic-fiber composite armor plates were prepared and carried out impact experiments to verify the accuracy of the simulation results.Finally,by adjusting the thickness of each component of armor plate,the armor with the lowest area density was designed.The research results showed that:With the same laying methods,the impact resistances of CF laminates are better than that of UHMWPE laminates when the impact velocity is 380 m/s and 780 m/s.But when the impact velocity is 580 m/s,the ballistic performance of UHMWPE laminates is better than that of CF laminates.Layer angle also has a greater influence on the ballistic performance of the fiber laminate.The penetration resistance of the angle laminate is better than that of the orthogonal laminate.When the laying direction of CF laminates is[45/-45]₄ and the laying direction of UHMWPE laminates is[0/30/60/90]₂,the laminate has the best bulletproof effect.The hybridization of fibers can improve the impact resistance of laminates.When UHMWPE laminate is used as the impact surface and alternately layered with carbon fiber in 1:1,the laminate has the best ballistic performance.The mechanical parameters and structure of ceramics have a great influence on the ballistic performance of armor plate.Compared with silicon carbide and alumina ceramics,boron carbide ceramics have the best anti-ballistic effect.Splicing ceramics can reduce the damage area of the ceramics after impact.The ceramic armor plate made by splicing regular quadrangular ceramics with side length of 8 cm has the best comprehensive performance.Ceramic-fiber composite armor plates with different structures were prepared and carried out ballistic impact tests to verify the accuracy of the simulation model.After optimizing the structure of the ceramic-fiber composite armor plate,the optimal structure of the armor plate under the impact of 780 m/s is proposed.When the ceramic panel is 16 mm and the fiber backing is 10 mm,the armor plate has the lowest areal density while resisting the impact of projectiles,which can provide a reference for engineering practice.