靶体材料叠层顺序对抗卵形头弹冲击性能影响
发布时间：2018-11-12 07:21
【摘要】：为研究靶体材料及结构对其抗撞击特性的影响,利用一级轻气炮系统进行卵形头弹正撞击靶体试验.通过改变靶体材料及结构,分析靶体在不同撞击条件下的弹道极限及失效模式.靶体包括单层靶、相同材料板组成的等厚双层靶,以及不同材料板组成的等厚双层靶,靶体总厚度相等.利用高速摄像机获取弹体撞击速度数据和弹道姿态图像,基于实验数据建立各种结构靶体的初始-剩余速度曲线,进而计算获取靶体的弹道极限速度.通过分析靶体的弹道极限及面密度,从抗撞击效率方面揭示靶板的叠层顺序对其抗撞击性能的影响规律及机理.试验结果表明:单层靶板的抗撞击性能高于等厚度的双层靶板;靶板的叠层顺序对混合双层靶抗撞击性能存在影响,硬板在前软板在后排列能够提高靶体的抗撞击性能,并且这种差异随弹体初始速度的增加而减小.此外,铝合金靶体单位质量的抗撞击效率高于钢靶体.
[Abstract]:In order to study the effect of target material and structure on its impact resistance, the first class light gas gun system was used to test the positive impact of the oval head projectile on the target. By changing the material and structure of the target, the ballistic limit and failure mode of the target under different impact conditions are analyzed. The target body consists of a single-layer target, an equal-thickness double-layer target composed of the same material plate, and an equal thickness double-layer target composed of different material plates. The total thickness of the target body is equal. The impact velocity data and trajectory attitude image of projectile were obtained by high-speed camera. Based on the experimental data, the initial-residual velocity curves of various structural targets were established, and the ballistic limiting velocity of the target was calculated. By analyzing the ballistic limit and surface density of the target, the influence law and mechanism of the stacking sequence of the target plate on its anti-impact performance are revealed from the aspect of the anti-impact efficiency. The results show that the impact resistance of single-layer target is higher than that of double-layer target with equal thickness. The stacking order of the target plate has an effect on the anti-impact performance of the mixed double-layer target. The anti-impact performance of the target can be improved by the arrangement of the hard plate in the front and the back, and the difference decreases with the increase of the initial velocity of the projectile. In addition, the impact resistance efficiency of aluminum alloy target per unit mass is higher than that of steel target.
【作者单位】： 中国民航大学航空工程学院;哈尔滨工业大学航天学院;
【基金】：国家自然科学基金(11072072) 中央高校基本科研业务费资助(3122016C001)
【分类号】：O347
本文编号：2326446
[Abstract]:In order to study the effect of target material and structure on its impact resistance, the first class light gas gun system was used to test the positive impact of the oval head projectile on the target. By changing the material and structure of the target, the ballistic limit and failure mode of the target under different impact conditions are analyzed. The target body consists of a single-layer target, an equal-thickness double-layer target composed of the same material plate, and an equal thickness double-layer target composed of different material plates. The total thickness of the target body is equal. The impact velocity data and trajectory attitude image of projectile were obtained by high-speed camera. Based on the experimental data, the initial-residual velocity curves of various structural targets were established, and the ballistic limiting velocity of the target was calculated. By analyzing the ballistic limit and surface density of the target, the influence law and mechanism of the stacking sequence of the target plate on its anti-impact performance are revealed from the aspect of the anti-impact efficiency. The results show that the impact resistance of single-layer target is higher than that of double-layer target with equal thickness. The stacking order of the target plate has an effect on the anti-impact performance of the mixed double-layer target. The anti-impact performance of the target can be improved by the arrangement of the hard plate in the front and the back, and the difference decreases with the increase of the initial velocity of the projectile. In addition, the impact resistance efficiency of aluminum alloy target per unit mass is higher than that of steel target.
【作者单位】： 中国民航大学航空工程学院;哈尔滨工业大学航天学院;
【基金】：国家自然科学基金(11072072) 中央高校基本科研业务费资助(3122016C001)
【分类号】：O347
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