头部非对称刻槽弹体侵彻混凝土目标性能研究
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摘要
为进一步提高弹体对混凝土类脆性靶体的破坏能力,提出一种可对混凝土施加轴线压缩与切向剪切联合破坏作用的头部非对称刻槽弹体,并在极坐标下表征非圆截面头部弹体结构。利用准静态柱形空腔膨胀模型,建立轴向压缩-切向剪切联合作用下的准静态柱形空腔膨胀理论模型,推导得到考虑剪切效应的靶体响应力函数。在此基础上,发展了头部非对称刻槽弹体侵彻半无限厚混凝土目标局部相互作用模型。基于前述分析,开展了头部非对称刻槽弹体侵彻半无限混凝土目标系列试验研究。研究结果表明:考虑剪切效应的二维空腔膨胀理论及局部相互作用模型的理论计算结果与试验结果吻合较好;与普通尖卵形弹体相比较,头部非对称刻槽弹体具有较好的侵彻能力,能有效提高侵彻深度。
A projectile with asymmetrically grooved nose is proposed to further improve the penetration performance of projectile into concrete target. The projectile penetrates into target with passive rotation during the penetration. The asymmetrically grooved nose projectile is geometrically characterized under the polar coordinates. An extended quasi-static cylindrical cavity expansion model with tangential shear effect is constructed to estimate the normal stress on the surface of asymmetrically grooved-nose projectile by the quasi-static cylindrical cavity expansion model. The localized interaction models( LIMs) for the ultimate depth of penetration( DOP) of asymmetrically grooved nose projectile are derived based on the predicted normal stress. Comparative experiments of the asymmetrically grooved nose projectile and the ogive-nose projectile penetrating into semi-infinite concrete target are conducted. The analysis results prove that the LIM with extended quasi-static cylindrical cavity expansion model has a preferable estimating accuracy and is suitable for prediction of DOP of asymmetric groove-nose projectile. Compared with ogive-nose projectile,the asymmetrically grooved nose projectile has a better penetration performance.
A projectile with asymmetrically grooved nose is proposed to further improve the penetration performance of projectile into concrete target. The projectile penetrates into target with passive rotation during the penetration. The asymmetrically grooved nose projectile is geometrically characterized under the polar coordinates. An extended quasi-static cylindrical cavity expansion model with tangential shear effect is constructed to estimate the normal stress on the surface of asymmetrically grooved-nose projectile by the quasi-static cylindrical cavity expansion model. The localized interaction models( LIMs) for the ultimate depth of penetration( DOP) of asymmetrically grooved nose projectile are derived based on the predicted normal stress. Comparative experiments of the asymmetrically grooved nose projectile and the ogive-nose projectile penetrating into semi-infinite concrete target are conducted. The analysis results prove that the LIM with extended quasi-static cylindrical cavity expansion model has a preferable estimating accuracy and is suitable for prediction of DOP of asymmetric groove-nose projectile. Compared with ogive-nose projectile,the asymmetrically grooved nose projectile has a better penetration performance.
引文
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[15]Wu H J,Wang Y N,Huang F L.Penetration concrete targets experiments with non-ideal&high velocity between 800 and1 100 m/s[J].International Journal of Modern Physics B,2008,22(9/10/11):1087-1093.
[16]He L L,Chen X W,Wang Z H.Study on the penetration performance of concept projectile for high-speed penetration(CPHP)[J].International Journal of Impact Engineering,2016,94:1-12.
[17]Zhang S,Wu H J,Zhang X X,et al.High-velocity penetration of concrete targets with three types of projectiles:experiments and analysis[J].Latin American Journal of Solids and Structures,2017,14(9):1614-1628.
[18]庞春旭,何勇,沈晓军,等.刻槽弹体旋转侵彻铝靶试验与数值模拟[J].弹道学报,2015,27(1):70-75.PANG Chun-xu,HE Yong,SHEN Xiao-jun,et al.Experimental investigation and numerical simulation on grooved projectile rotationally penetrating into aluminum target[J].Journal of Ballistics,2015,27(1):70-75.(in Chinese)
[19]庞春旭,何勇,沈晓军,等.刻槽弹体旋转侵彻混凝土效应试验研究[J].兵工学报,2015,36(1):46-52.PANG Chun-xu,HE Yong,SHEN Xiao-jun,et al.Experimental investigation on penetration of grooved projectiles into concrete targets[J].Acta Armamentarii,2015,36(1):46-52.(in Chinese)
[20]Forrestal M J,Altman B S,Cargile J D,et al.An empirical equation for penetration depth of ogive-nose projectiles into concrete targets[J].International Journal of Impact Engineering,1994,15(4):395-405.
[21]Chen X W,Fan S C,Li Q M.Oblique and normal perforation of concrete targets by a rigid projectile[J].International Journal of Impact Engineering,2004,30(6):617-637.
[22]Li Q M,Chen X W.Dimensionless formulae for penetration depth of concrete target impacted by a non-deformable projectile[J].International Journal of Impact Engineering,2003,28(1):93-116.
[2]刘坚成,黄风雷,皮爱国,等.异型头部弹体增强侵彻性能机理研究[J].爆炸与冲击,2014,34(4):409-414.LIU Jian-cheng,HUANG Feng-lei,PI Ai-guo,et al.On enhanced penetration performance of modified nose projectiles[J].Explosion and Shock Waves,2014,34(4):409-414.(in Chinese)
[3]Liu J C,Pi A G,Huang F L.Research on penetration performance of double-ogive-nose projectiles[J].International Journal of Impact Engineering,2015,84(10):13-23.
[4]Ben-Dor G,Dubinsky A,Elperin T.Applied high-speed plate penetration dynamics[M].Netherlands:Springer,2006.
[5]Ben-Dor G,Dubinsky A,Elperin T.High-speed penetration modeling and shape optimization of the projectile penetrating into concrete shields[J].Mechanics Based Design of Structures and Machines,2009,37(4):538-549.
[6]Mayersak J R.Kinetic energy cavity penetrator weapon:US,US20040231552[P].2003-05-23.
[7]柴传国.异形头部弹体对混凝土靶的侵彻效应研究[D].北京:北京理工大学,2014.CHAI Chuan-guo.Study on the mechanism of penetration into concrete of nose headed projectile[D].Beijing:Beijing Institute of Technology,2014.(in Chinese)
[8]Ragnedda F,Serra M.Optimum shape of high speed impactor for concrete targets using PSOA heuristic[J].Engineering,2010,2(4):257-262.
[9]Yakunina G Y.The three-dimensional motion of optimal pyramidal bodies[J].Journal of Applied Mathematics and Mechanics,2005,69(2):234-243.
[10]Yakunina G Y.Optimum three-dimensional hypersonic bodies within the framework of a local interaction model[C]∥International Space Planes and Hypersonic Systems and Technologies Conference.Kyoto,Japan:AIAA,2001.
[11]Yakunna G Y.Effects of sliding friction on the optimal 3D-nose geometry of rigid rods penetrating media[J].Optimization and Engineering,2005,6(3):315-338.
[12]范少博,陈智刚,侯秀成,等.旋进侵彻弹丸数值模拟与试验研究[J].弹箭与制导学报,2013,33(1):80-83.FAN Shao-bo,CHEN Zhi-gang,HOU Xiu-cheng,et al.Numerical simulation and experimental study on novel rotating penetration projectile[J].Journal of Projectiles,Rockets,Missiles and Guidance,2013,33(1):80-83.(in Chinese)
[13]Erengil M E,Cargile D J.Advanced projectile concept for high speed penetration of concrete targets[C]∥Proceedings of the20th International Symposium on Ballistics.Orlando,FL,US:International Ballistics Society,2002.
[14]梁斌,陈小伟,姬永强,等.先进钻地弹概念弹的次口径高速深侵彻实验研究[J].爆炸与冲击,2008,28(1):1-9.LIANG Bin,CHEN Xiao-wei,JI Yong-qiang,et al.Experimental study on deep penetration of reduced-scale advanced earth penetrating weapon[J].Explosion and Shock Waves,2008,28(1):1-9.(in Chinese)
[15]Wu H J,Wang Y N,Huang F L.Penetration concrete targets experiments with non-ideal&high velocity between 800 and1 100 m/s[J].International Journal of Modern Physics B,2008,22(9/10/11):1087-1093.
[16]He L L,Chen X W,Wang Z H.Study on the penetration performance of concept projectile for high-speed penetration(CPHP)[J].International Journal of Impact Engineering,2016,94:1-12.
[17]Zhang S,Wu H J,Zhang X X,et al.High-velocity penetration of concrete targets with three types of projectiles:experiments and analysis[J].Latin American Journal of Solids and Structures,2017,14(9):1614-1628.
[18]庞春旭,何勇,沈晓军,等.刻槽弹体旋转侵彻铝靶试验与数值模拟[J].弹道学报,2015,27(1):70-75.PANG Chun-xu,HE Yong,SHEN Xiao-jun,et al.Experimental investigation and numerical simulation on grooved projectile rotationally penetrating into aluminum target[J].Journal of Ballistics,2015,27(1):70-75.(in Chinese)
[19]庞春旭,何勇,沈晓军,等.刻槽弹体旋转侵彻混凝土效应试验研究[J].兵工学报,2015,36(1):46-52.PANG Chun-xu,HE Yong,SHEN Xiao-jun,et al.Experimental investigation on penetration of grooved projectiles into concrete targets[J].Acta Armamentarii,2015,36(1):46-52.(in Chinese)
[20]Forrestal M J,Altman B S,Cargile J D,et al.An empirical equation for penetration depth of ogive-nose projectiles into concrete targets[J].International Journal of Impact Engineering,1994,15(4):395-405.
[21]Chen X W,Fan S C,Li Q M.Oblique and normal perforation of concrete targets by a rigid projectile[J].International Journal of Impact Engineering,2004,30(6):617-637.
[22]Li Q M,Chen X W.Dimensionless formulae for penetration depth of concrete target impacted by a non-deformable projectile[J].International Journal of Impact Engineering,2003,28(1):93-116.
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