纤维增强复合材料三明治板破片穿甲数值仿真

研究破片对（由钢板、纤维增强复合材料板及钢板叠合而成）纤维增强复合材料三明治板穿甲过程中能量转化规律。进行破片模拟弹丸(FSP)对不同结构三明治板高速穿甲数值仿真，获得FSP破片对16种三明治板的弹道极限，并与实验结果对比验证数值仿真的可信度。通过分析数值仿真结果，进一步研究破片临界贯穿条件下纤维增强复合材料三明治板各组成部分吸能比率与结构尺寸相关性。结果表明，不同厚度夹层板的吸能比率恒定(芳纶纤维10.41%，玻璃纤维2.68%)，夹层板内能随厚度的增加呈二次函数增加。由此获得破片对纤维增强复合材料三明治板弹道极限速度计算方法。

Armor-piercing numerical simulation on fragment against sandwich plate with fiber reinforced composite cores

Research on energy transform rule of armor-piercing on fragment against sandwich plate with fiber reinforced composite cores (is made by superimposing on steel plate、composite material plate and steel plate laminated). The numerical simulation of fragment simulation projectile (FSP) penetrated to different kinds of sandwich plate with high velocity were conducting, the ballistic limits of fragment pierced 16 kinds of sandwich plates were obtained. The credibility of numerical simulation method was verified by comparing with the experimental results. Under fragment critical perforation, the relativity between energy absorption ratio of each part of sandwich plate and structure size was studied by analyzing the numerical simulation results. The research results show that the energy absorption ratio is constant for different thickness cores plate( the aramid fiber cores is 10.41%，the glass fiber cores is 2.68%), the internal energy in core plate is quadratic function increments with the increase of its thickness. Base these, the calculation method of ballistic limit velocity of fragment penetrating sandwich plate with fiber reinforced composite cores was obtained.