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Effects of material of metallic frame on the penetration resistances of ceramic-metal hybrid structures
Defence Technology ( IF 5.1 ) Pub Date : 2019-05-01 , DOI: 10.1016/j.dt.2019.04.015
Xuanyi An , Chao Tian , Qitian Sun , Yongxiang Dong

The effects of metallic material on the penetration resistances of ceramic-metal hybrid structures against vertical long-rod tungsten projectiles were studied by artillery-launched experiments and numerical simulation. Hybrid structures with rectangular cores in transverse orthogonal arrangement and slide-fitting ceramic inserts of zirconia toughened alumina prisms were fabricated with titanium alloy TC4 (Ti6Al4V), AISI 4340 steel and 7075 aluminum alloy panels, respectively. The results showed that the hybrid structure of Ti6Al4V exhibited the highest penetration resistance, followed by that of 7075 aluminum alloy with the same area density. The penetration resistance of the hybrid structure of AISI 4340 steel was the lowest. The underlying mechanisms showed that the metallic material of a ceramic-metal hybrid structure can directly affect its energy absorption from the impact projectile, which further affects its penetration resistance. Different metallic frames exhibited different failure characteristics, resulting in different constraint conditions or support conditions for ceramic prisms. The high penetration resistance of the Ti6Al4V hybrid structure was due to its stronger back support to ceramic prisms as compared with that of AISI 4340 steel hybrid structure, and better constraint condition for ceramic prisms by metallic webs as compared with that of 7075 aluminum alloy hybrid structure. The results of mass efficiency and thickness efficiency showed that the Ti6Al4V hybrid structure has advantages in reducing both the thickness and the mass of protective structure. In addition, because the ceramic-metal hybrid structures in the present work were heterogeneous, impact position has slight influence on their penetration resistances.



中文翻译:

金属框架材料对陶瓷-金属混合结构耐穿透性的影响

通过火炮发射实验和数值模拟研究了金属材料对陶瓷-金属混合结构对垂直长杆钨弹的耐穿透性的影响。分别使用钛合金TC4(Ti6Al4V),AISI 4340钢和7075铝合金面板制造了具有横向正交排列的矩形芯和氧化锆增韧氧化铝棱镜的滑动装配陶瓷插入物的混合结构。结果表明,Ti6Al4V的杂化结构表现出最高的耐穿透性,其次是面积密度相同的7075铝合金。AISI 4340钢的混合结构的耐穿透性最低。潜在的机理表明,陶瓷-金属混合结构的金属材料可以直接影响其从冲击弹丸中吸收的能量,从而进一步影响其抗穿透性。不同的金属框架表现出不同的失效特性,从而导致陶瓷棱镜的约束条件或支撑条件不同。Ti6Al4V混合结构的高抗穿透性是由于与AISI 4340钢混合结构相比,它对陶瓷棱镜的背支撑更强,并且与7075铝合金混合结构相比,它对金属棱镜对陶瓷棱镜的约束条件更好。 。质量效率和厚度效率的结果表明,Ti6Al4V杂化结构在减小保护结构的厚度和质量方面均具有优势。另外,由于当前工作中的陶瓷-金属混合结构是异质的,因此冲击位置对其抗穿透性的影响很小。

更新日期:2019-05-01
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