宋殿义, 刘 飞, 蒋志刚. 刚性尖头弹侵彻圆柱形金属厚靶分析模型[J]. 工程力学, 2013, 30(1): 31-36. DOI: 10.6052/j.issn.1000-4750.2011.06.0391
引用本文: 宋殿义, 刘 飞, 蒋志刚. 刚性尖头弹侵彻圆柱形金属厚靶分析模型[J]. 工程力学, 2013, 30(1): 31-36. DOI: 10.6052/j.issn.1000-4750.2011.06.0391
SONG Dian-yi, LIU Fei, JIANG Zhi-gang. AN ANALYTICAL MODEL FOR PENETRATION INTO CYLINDRICAL METALLIC THICK TARGET BY RIGID SHARP-NOSED PROJECTILES[J]. Engineering Mechanics, 2013, 30(1): 31-36. DOI: 10.6052/j.issn.1000-4750.2011.06.0391
Citation: SONG Dian-yi, LIU Fei, JIANG Zhi-gang. AN ANALYTICAL MODEL FOR PENETRATION INTO CYLINDRICAL METALLIC THICK TARGET BY RIGID SHARP-NOSED PROJECTILES[J]. Engineering Mechanics, 2013, 30(1): 31-36. DOI: 10.6052/j.issn.1000-4750.2011.06.0391

刚性尖头弹侵彻圆柱形金属厚靶分析模型

AN ANALYTICAL MODEL FOR PENETRATION INTO CYLINDRICAL METALLIC THICK TARGET BY RIGID SHARP-NOSED PROJECTILES

  • 摘要: 考虑金属厚靶侧面自由边界的影响,研究了刚性尖头弹侵彻有限平面尺寸金属厚靶问题。基于有限柱形空腔膨胀理论和线性硬化材料模型,得到了空腔壁径向压力的解析式,建立了刚性尖头弹侵彻有限直径圆柱形金属厚靶工程模型。与试验和数值模拟比较表明,该文工程模型计算精度很好。基于所建立的工程模型,研究了靶板半径对侵彻深度和侵彻阻力的影响,结果表明:当靶板与弹丸半径比值小于20时,靶板半径对侵彻阻力和侵彻深度有显著影响,不能按无限尺寸靶板计算;当靶板与弹丸半径比值大于20时,靶板半径对侵彻阻力和侵彻深度影响较小,可近似按无限尺寸靶计算。

     

    Abstract: The penetration of thick mental targets with finite planner dimensions by a rigid sharp-nose was investigated in the consideration of the lateral free boundary of the target. Based on the Finite Cylindrical Cavity Expansion (FCCE) theory and the linear strain-hardening material model, analytical solutions of radial pressure on the cavity wall were obtained, and an engineering model for rigid sharp-nosed projectile penetration into cylindrical thick metal targets was presented. The penetration depths from the present model are in a good agreement with those from the published ballistic experiments and numerical simulation. Based on the model, the influence of a target radius on penetration depth and penetration resistance was studied. The results show that the penetration resistance and the penetration depth are obviously affected by the ratio of the target radius to the projectile radius when the ratio is less than 20, they can not be calculated as an unlimited-size target. When the ratio of the target radius to the projectile radius is larger than 20, the target radius has less effects on the penetration depth and penetration resistance, that can be approximately calculated as an unlimited-size target.

     

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