芳纶复合材料对球形弹丸的抗贯穿性能研究

以芳纶纤维织物为增强材料、聚氨酯为树脂基体的芳纶复合材料,进行了2.05 g钨合金球、1.03 g钢球和4.50 g钢球的抗贯穿性能研究,并分析了芳纶复合材料对以上3种典型球形弹丸的抗弹性能差异。试验结果表明:芳纶复合材料的抗贯穿性能与测试过程中采用的弹丸种类有关,采用2.05 g钨球时较低,采用1.03 g钢球时较高,采用4.50 g钢球时居中。进而提出了一种新的芳纶复合材料抗贯穿性能表征方法,即直接作用面积比吸收能(PSEA)法。PSEA值在芳纶复合材料受到材质相同的球形弹丸冲击时基本相同,据此在芳纶复合材料对某种球形弹丸的弹道极限速度已知时,可计算出对其它球形弹丸的弹道极限速度。验证结果表明:弹道极限速度的计算值和实测值相差1%~6%.

Anti-perforation Performance of Aramid Composite Against Spheric Projectile

The anti-perforation performance of aramid composite made by aramid fiber reinforced polyurethane against 2.05 g tungsten ball, 1.03 g steel ball and 4.50 g steel ball was studied in this paper. And the difference of anti-perforation performance of it against three different kinds of representative balls above was also discussed. The results show that the anti-perforation performance of aramid composite varies with the bullets. The anti-perforation performance was lower for 2.05 g tungsten balls, and higher for 1.03 g steel balls, while in the middle for 4.50 g steel balls. Moreover, a new method which is called specific energy absorption per direct effect area (PSEA) was put forward for expressing the anti-perforation performance of aramid composites against different kinds of the spheric projectiles. The experiment result shows that PSEAs are almost the same when the aramid composite is impacted by the same kind of spheric projectiles. The PSEA was lower for tungsten balls than for steel spheres, which may be used in calculating the ballistic limit velocity of aramid composite against the other spheric projectiles. And the validation result shows that the ballistic limit velocity calculated by PSEA differs with the test results about 1% to 6%.