Experimental and Numerical Simulation Study of Penetration into Multi-Layer Target by Shaped Charge with Different Liner Materials
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摘要: 为实现聚能装药对多层介质的大破孔侵彻，提出了钛合金药型罩聚能装药设计方案。采用实验与数值模拟相结合的方法，对钛合金、低碳钢及紫铜罩聚能装药侵彻多层介质进行了研究，分析了钛合金聚能侵彻体相对于紫铜和低碳钢侵彻体在成型过程中，其动能、头部速度及射流长度等的差异，并对侵彻过程中应力波的传播特性进行了分析。结果表明：相对于紫铜和低碳钢，钛合金罩聚能侵彻体的能量转换率高，所获得的动能大，头尾速度梯度小，外形更为短粗；虽对多层介质侵彻时侵彻深度有所减小，但漏斗坑尺寸明显增大，且平均破孔孔径提高了约20%。Abstract: To investigate the large penetrated hole's performance of shaped charge against multi-layer target, a titanium alloy liner of shaped charge is proposed. Using the method of experimental and numerical simulation, the jet formation and penetration into multi-layer target are investigated. Difference among the explosion energy conversion, jet tip velocity, jet length, penetration performance, and also the shock wave propagation in the penetrating process are analyzed, for which liner materials include titanium alloy, mild steel and Cu. It is found that compared with the mild steel or Cu liner, the liner material made of titanium alloy has a larger energy of jet whose shape is podgier, the depth as well as diameter of crater is bigger. Although the penetration depth decreases slightly, the size of crater formed in concrete increases obviously and the average penetrated hole diameter on multi-layer increases by 20%.
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Key words:
- liner material /
- shaped charge /
- titanium alloy /
- penetration
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Baker E L, Daniels A S. Barnie: A unitary Demoli Ti alloy on warhead [A]//19th International Symposium of Ballistics [C]. Interlaken, Switzerland, 2001: 569-574. Wang Y, Jiang W, Liu H Y, et al. Progress in materials and processing technology of powder liners [J]. Chinese Journal of Energetic Material, 2007, 15(5): 555-559. (in Chinese) 王毅, 姜炜, 刘宏英, 等. 粉末药型罩材料及其工艺技术的研究进展 [J]. 含能材料, 2007, 15(5): 555-559. Wu C, Liao S S, Sun T, et al. Research on shaped charge warhead employing large diameter penetrating hole with tungsten alloy liner [J]. Transactions of Beijing Institute of Technology, 2009, 29(9): 760-766. (in Chinese) 吴成, 廖莎莎, 孙韬, 等. 钨合金药型罩材料的大破孔聚能战斗部研究 [J]. 北京理工大学学报, 2009, 29(9): 760-766. Century Dynamics Inc. AUTODYN User Manual [M]. USA: Century Dynamics in Corporation, 2001. Wang Y P. The research of dynamical fracture of TC4 alloy [D]. Beijing: The Beijing Graduate School, CAEP, 1990. (in Chinese) 王彦平. TC4钛合金的动态断裂研究 [D]. 北京: 中国工程物理研究院北京研究生部, 1990. Hu B Y, Dong Q D, Han C S, et al. Analysis of the firing mechanics for Ti-6Al-4V natural fragments [J]. Explosion and Shock Waves, 1995, 15(3): 254-257. (in Chinese) 胡八一, 董庆东, 韩长生, 等. TC4钛合金自然破片的引燃机理分析 [J]. 爆炸与冲击, 1995, 15(3): 254-257. Tu Z G, Lu Y. Evaluation of typical concrete material models used in hydrocodes for high dynamic response simulations [J]. Int J Impact Eng, 2009, 36(1): 132-146. Luccioni B, Ambrosini D, Nurickc G, et al. Craters produced by underground explosions [J]. Comput Struct, 2009, 87(21-22): 1366-1373. -
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