【摘要】：為研究靶體材料及結(jié)構(gòu)對(duì)其抗撞擊特性的影響,利用一級(jí)輕氣炮系統(tǒng)進(jìn)行卵形頭彈正撞擊靶體試驗(yàn).通過(guò)改變靶體材料及結(jié)構(gòu),分析靶體在不同撞擊條件下的彈道極限及失效模式.靶體包括單層靶、相同材料板組成的等厚雙層靶,以及不同材料板組成的等厚雙層靶,靶體總厚度相等.利用高速攝像機(jī)獲取彈體撞擊速度數(shù)據(jù)和彈道姿態(tài)圖像,基于實(shí)驗(yàn)數(shù)據(jù)建立各種結(jié)構(gòu)靶體的初始-剩余速度曲線,進(jìn)而計(jì)算獲取靶體的彈道極限速度.通過(guò)分析靶體的彈道極限及面密度,從抗撞擊效率方面揭示靶板的疊層順序?qū)ζ淇棺矒粜阅艿挠绊懸?guī)律及機(jī)理.試驗(yàn)結(jié)果表明:單層靶板的抗撞擊性能高于等厚度的雙層靶板;靶板的疊層順序?qū)旌想p層靶抗撞擊性能存在影響,硬板在前軟板在后排列能夠提高靶體的抗撞擊性能,并且這種差異隨彈體初始速度的增加而減小.此外,鋁合金靶體單位質(zhì)量的抗撞擊效率高于鋼靶體.
[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.
【作者單位】： 中國(guó)民航大學(xué)航空工程學(xué)院;哈爾濱工業(yè)大學(xué)航天學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(11072072) 中央高校基本科研業(yè)務(wù)費(fèi)資助(3122016C001)
【分類號(hào)】：O347

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