Failure patterns and ballistic resistance of thin single A3 steel targets obliquely impacted by different nose shape projectiles
Zitao Guo1, Guo Zhao1, Wei Zhang2
1. Department of Civil Engineering, Jiujiang university, Jiujiang, Jiangxi, 332005；
2. Hypervelocity Impact Research Center, Harbin Institute of Technology, Harbin 150080
Abstract：Oblique perforation experiments on single A3 steel sheets with the thickness of 2 mm impacted by flat and ogival projectiles at 5 impact angles were conducted using a light-gas gun. The initial-residual velocity curves and ballistic limits for projectiles perforating single targets at different angles were obtained, meanwhile, the effects of different projectile nose shapes and obliquities on the ballistic resistance and failure patterns of targets were compared and analyzed. The results show that the target perforation by flat projectiles is easier than that by ogive nosed projectiles at each oblique angle, while the ricochet phenomenon occurs more easily for ogive projectiles at large impact angles. The ballistic resistance of targets is found to be closely related to the target damages induced by projectile impact. As the impact angle increases, the local perforation damage model of the target plate due to flat projectile impact turns gradually from the shear plugging to the dominant tensile tearing failure and the bending and film deformation of the entire structure decrease. In contrast, the oblique petal-cracking is found to be the main failure model in thin plates perforated obliquely by ogive projectiles.
郭子涛,郭钊1，张伟2. 单层A3钢薄靶在不同头型弹体斜撞击下的失效模式和防护性能研究[J]. 振动与冲击, 2018, 37(1): 27-31.
Zitao Guo1, Guo Zhao1, Wei Zhang2. Failure patterns and ballistic resistance of thin single A3 steel targets obliquely impacted by different nose shape projectiles. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(1): 27-31.
[1] Backman EM, Goldsmith W. The mechanics of penetration of projectiles into targets [J]. Int. J. Eng. Sci. 1978, 16 (1):1-99.
[2] G. G. Corbett, S. R. Reid and W. Johnson. Impact loading of plates and shells by free-flying projectiles: a review[J]. Int. J. Impact Eng. 1996, 18 (2):141-230.
[3] Gabi Ben-Dor, Anatoly Dubinsky, Tov Elperin. Ballistic impact: Recent advances in analytical modeling of plate penetration dynamics-A review[J]. Appl. Mech. Reviews. 2005, 58:355-371.
[4] Goldsmith, W. Non-Ideal Projectile Impact on Targets[J]. Int. J. Impact Eng. 1999, 22 (2-3): 95–395.
[5] T.Borvik, M. Langseth, O. S. Hopperstad, and K. A. Malo. Perforation of 12 mm thick steel plates by 20 mm diameter projectiles with flat, hemispherical and conical noses: Part I: Experimental study[J]. Int. J. Impact Eng. 2002, 27:19-35.
[6] T.Børvik, O.S. Hopperstad, T. Berstad, M. Langseth. Perforation of 12mm thick steel plates by 20mm diameter projectiles with flat, hemispherical and conical noses Part II: Numerical simulations[J]. Int. J. Impact Eng. 2002, 27:37–64
[7] N.K. Gupta, M. A. Iqbal, and G. S. Sekhon. Experimental and numerical studies on the behavior of thin aluminum plates subjected to impact by blunt and hemispherical-nosed projectiles[J]. Int. J. Impact Eng. 2006, 32:1921-44.
[8] N.K. Gupta, M. A. Iqbal, and G. S. Sekhon. Effect of projectile nose shape, impact velocity and target thickness on deformation behavior of aluminum plates[J]. Int. J. Solids Struct. 2007, 44: 3411-39.
[9] Zhou DW, Stronge WJ. Ballistic limit for oblique impact of thin sandwich panels and spaced plates[J]. Int. J. Impact Eng. 2008,35:1339–54.
[10] Zaid,M. and Paul,B. Oblique perforation of a thin plate by truncated conical projectile[J]. J. franklin Inst. 1959, 268, 24-45.
[11] Awerbuch J, Bodner SR. An investigation of oblique perforation of metallic plates by projectiles[J]. Exp. Mech. 1977, 17:147–153.
[12] Woodward, R. L. and Baldwin. Oblique perforation of targets by small piercing projectiles[J]. J. Mech. Eng. Sci. 1979, 21:85-91.
[13] Goldsmith.W. , Finnegan, S. A. Normal and oblique impact of cylindro-conical and cylindrical projectiles on metallic plates[J]. Int. J. Impact Eng. 1986, 4:83-105
[14] Gupta, N.K and Mashu, V,. Normal and oblique impact of a kinetic energy projectile on mild steel plates[J]. Int. J. Impact Eng. 1992, 12:333-44.
[15] Piekutowski J, Forrestal MJ, Poormon KL, Warren TL. Perforation of aluminum plates with ogive-nose steel rods at normal and oblique impacts[J]. Int. J. Impact Eng .1996, 18:877–87.
[16] Gupta, N.K and Mashu, V,. An experimental study of normal and oblique impact of hard-core projectile on single and layered plates[J]. Int. J. Impact Eng. 1997, 19:295-414.
[17] M.A. Iqbal, A. Chakrabarti, S. Beniwal, N.K. Gupta. 3D numerical simulations of sharp nosed projectile impact on ductile targets[J]. Int. J. Impact Eng. 2010; 37: 185–95.
[18] T. Børvik, L. Olovsson, S. Dey, M. Langseth. Normal and Oblique Impact of Small Arms Bullets on Aa6082-T4 Aluminium Protective Plates[J]. Int. J. Impact Eng. 2011, 38 (7): 577-589
[19] 陈刚, 陈忠富, 张方举, 徐艾民, 何鹏. 截锥形弹体侵彻薄靶板实验研究[J]. 弹箭与制导学报. 2005,25(4):888-890
Chen Gang, Chen Zhongfu, Xu Aimin, He Peng. Experimental study on the penetration of thin plates by truncated conical projectiles[J].Missiles and Guidance. 2005,25(4):888-890
[20] 陈刚, 陈忠富. 截锥形空心弹体侵彻薄靶板的数值模拟[J].弹箭与制导学报. 2008, 28 (6):99-102
Chen Gang, Chen Zhongfu. Numerical study on the penetration of thin plates by truncated hollow conical projectiles[J].Missiles and Guidance. 2008, 28 (6):99-102
[21] 张青平, 陈刚, 屈明. 截锥型战斗部斜穿靶数值模拟研究[J].含能材料. 2005, 13(4):222-224
Zhang Qingping, Chen Gang, Qu Ming. Numerical study on the oblique perforation of targets by truncated conical warhead. Energetic Materials. 2005, 13(4): 222-224
