| With the continuous development of modern military forces,various weapons of mass destruction have emerged one after another.In order to improve the survivability of soldiers on the modern battlefield,the development of the field of armor protection is imminent.At this stage,the armor system composed of high-strength armor steel plates is mainly suitable for heavy tanks.For light tanks,it is necessary to use an armor that can protect the level of weight while being as light as possible.Because a single material cannot meet today The light and high-strength armor protection requirements of the chariot,so this provides a broad development prospect for the field of composite armor composed of multiple layers of materials.This article takes the lightweight and high-strength characteristics required by modern armor as the design idea,combines ceramic,composite materials,light alloys and other high-quality ballistic materials,and uses a combination of multi-objective optimization and finite element analysis to design a B4C ceramic/UHMWPE/7075-T6Al composite armor configuration,this configuration through the excellent support role played by 7075-T6Al,the grinding of the ceramic layer and the UHMWPE layer large deformation energy absorption advantages can be fu lly exerted,while lower surface density,With excellent resistance to elasticity.The main research contents of this article are as follows:Firstly,designed eight sets of ceramic composite armor with different faces and back plates respectively,and investigated the influence of the area density and different face and back plate materials on the ballistic resistance mechanism of the ceramic laminated armor while ensuring the different and the same density It is concluded that under general circumstances,the greater the density,the better the anti-ballistic performance.When the surface density is different,the TC 4 is used as the surface and the backboard respectively,and the UHMWPE and T700 are used as the surface backboard respectively.Worst;select the B4C/UHMWPE/7075-T6Al ceramic composite armor with excellent anti-ballistic performance and areal density in the eight-assembly armor as the analysis object,and obtain a new type of ceramic composite armor by exchanging the layering order,By comparing the advantages and disadvantages of the old and new configurations,the B 4C/UHMWPE/7075-T6Al configuration is better than the B4C/7075-T6Al/UHMWPE configurationSecondly,taking B4C/UHMWPE/7075-T6Al ceramic composite target board as the research object,keeping the other factors unchanged,only changing the layup ratio and order of the fiber layup angle of UHMWPE board is obtained:Firstly,t he anti-ballistic performance of the target using±45°ply angle is better than that using 0°and90°ply angle,and when the±45°ply angle is on the lower surface of the target plate Can be the best.Secondly,When the ratio of pavement is kept constant,the anti-ballistic performance of laying two consecutive layers at the same angle is better than that of two plies continuously laying at different angles.Last but the least,the 45°angle change is better than other angle changes.Thirdly,the B4C/UHMWPE/7075-T6Al ceramic composite armor is selected as the design object,and the multi-objective optimized structural design of this armor configuration is obtained,and the optimal configuration with each part composed of（15mm B4C/6mm UHMWPE/6mm7075-T6Al）Ceramic composite armor,optimized armor,compared with armor steel with the same resistance,the surface density is reduced by more than 60%,the anti-ballistic coefficient is as high as 3.923,which meets the original intention of lightweight and high-strength armor design.Fourth,in order to verify the reliability of the ceramic composite armor structure obtained by optimization,a ceramic composite armor with the best configuration was trial-produced and live-fired.By comparing the simulation results with the experimental results,the error was within 3%,which proved that The optimization result has high feasibility and practicability. |
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