Crushing Mechanism of Spherical Tungsten Alloy Fragments Penetrate Thick Steel Plate Target

Abstract

Against protection requirements for high-speed fragments on the ground weapons, we carried out the research work of crushing mechanism at different impact speeds of φ8.7 mm spherical tungsten alloy, the penetration to 603 armor steel was completed by 20 mm ballistic gun, and the ANSYS/LS-DYNA software was used to complete the numerical calculation of the penetration. We find that there are different crushing mechanisms of spherical tungsten alloy with different speeds and low speed, the crushing mechanism of fragment is mainly controlled by overall plastic deformation, shearing stripping, and squeezing at a high pressure and a high speed. The crushing mechanism will have a spallation phenomenon in addition to the crushing mechanism under high pressure.

Keywords

spherical tungsten alloy / experimental research / numerical simulation / crushing mechanism / high pressure affected zone / spallation zone

References

[1] Cao HQ, Zhao BR, Xu LT. Armor Protection Technology[M], 2012 Beijing: Weapon Industry Press.

[2] Xu YX, Wang SS, Zhai Z, et al. Research on Armour-piercing Effect of High Velocity Tungsten Alloy Fragment Against Medium-thick Steel Target of Technology[J]. Acta Armamentarii, 2009, 30: 259-262.

[3] Gao RF, Han F, Ma XQ, et al. Study on the Ultimate Penetration Speed of Several Tungsten Alloy Fragments Penetrating Armored Steel Plate Vertically[J]. Journal of Projectiles Rockets Missiles and Guidance, 2005, 04: 128-131.

[4] Tong ZB, Wang JX, Peng CC, et al. Analysis of the Effect of the Circle Fragment Penetration the Tine Metal Target with the Initial Velocity between 2 km/s and 3 km/s[J]. Science Technology and Engineering, 2014, 33: 215-219.

[5] Zhang QM, Huang FL, et al. Super High-speed Collision Kinetics Introduction[M], 2000 Beijing: Science Press. 1-5.

[6] Yang Y, Li XJ, Zhu DM, et al. Development of Materials Damage Effect under Hypervelocity Impact Research Development of Materials Damage Effect under Hypervelocity Impact[J]. Ordance Material Science and Engineering, 2014, 37: 133-140.

[7] Wang RC, Zhao GZ. Terminal Effect of Projectile[M], 1993 Beijing: Beijing University of Technology Press.

[8] Sui SY, Wang SS. Terminal Effect[M], 2000 Beijing: National Defense Industry Press.

[9] Schaer FK, Herrwerth M. Effects in Hypervelocity Impact on Semi-infinite Metallic Targets[J]. Int. J. Impact Eng., 2001, 26: 699-711.

[10] Pedersen B, Bless S. Behind-armor Debris from the Impact of Hypervelocity Tungsten Penetrators[J]. Int. J. Impact Eng., 2006, 33: 605-614.

[11] Anderson CE, Subramanian R, Walker JD. Penetration Mechanics of Seg-tel Penetrators[J]. Int. J. Impact Eng., 1997, 20: 13-26.

[12] Charters AC, Menna TL, Piekutowski AJ. Penetration Dynamics of Rods from Direct Ballistic Tests of Advanced Armor Components at 2–3 km/s[J]. Int. J. Impact Engng., 1990, 10: 93-106.

[13] Sorensen BR, Kimsey KD, Silsby GF, et al. High Velocity Penetration of Steel Targets[J]. Int. J. Impact Eng., 1991, 11(1): 107-119.

[14] Anderson CE, Walker JD. An Analytic Expression for P/L for WA Long Rods into Armor Steel[J]. AIP Conference Proceedings, 1995, 370: 1 135-1 138.

[15] Cao RF, Han F, Ma XQ, et al. Investigation of Tungsten Fragments of Different Shape Penetrating Armour Plate[J]. Journal of Projectile, Rockets, Missiles and Guidance, 2005, 25(4): 25-27.

[16] Huang CQ, Zhang YF. Ballistic Limit Velocity Expressions for Spherical Fragment Penetrated through Target Plates[J]. Pojectiles, Rockets, Missiles and Guidance, 1992(2): 58–61

[17] Wang QT, Zhang QM, Zhai Z, et al. Character of Carter for Tungsten Spheres with a High-velocity Penetrating into a Medium-thick Steel Plate[J]. Journal of Vibration and Shock, 2013, 32(23): 121-125.