Volume 21 No. 3
Apr.  2015
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Citation:

Study on Penetration of Concrete Targets by Ogive-Nose Steel Projectile

  • Corresponding author: ZHOU Ning; 
  • Received Date: 2006-10-08
    Accepted Date: 2007-01-23
  • We conducted acceleration-time measurement of penetration experiments in targets with 100 mm diameter, 4.0 caliber-radius-head, 25 kg projectiles. The 3 m3 m3m and 2 m2 m2m concrete targets had an nominal unconfined compressive strength of 35 MPa and density 2 450 kg/m3. Projectiles were designed to contain a single-channel acceleration data recorder, so we recorded accelerations in the bore of the gun and accelerations during the penetration event. A 100 mm diameter powder gun launched the 25 kg projectiles to striking velocities between 310 and 632 m/s. We compared the measured penetration depths and acceleration-time data with the calculated results using Forrestal formula. The calculated results are in good agreement with rigid-body acceleration measurements for the rise times and peak plateau responses. The acceleration-time data of projectiles can be helpful for devising armour-piercing projectile and defense engineering.
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  • [1] Forrestal M J, Frew D J, Hanchak S J, et al. Penetration of Grout and Concrete Targets with Ogive-Nose Steel Projectiles [J]. Int J Impact Eng, 1996, 18(5): 465-476.
    [2] Frew D J, Hanchak S J, Green M L, et al. Penetration of Concrete Targets with Ogive-Nose Steel Rods [J]. Int J Impact Eng, 1998, 21(6): 489-497.
    [3] Gomez J T, Shukla A. Multiple Impact Penetration of Semi-Infinite Concrete [J]. Int J Impact Eng, 2001, 25: 965-979.
    [4] Xu J B, Lin J D, Tang R D, et al. The Penetration of Steel Bar Projectiles into Concrete Target [J]. Explosion and Shock Waves, 2002, 22(2): 174-178. (in Chinese)
    [5] 徐建波, 林俊德, 唐润棣, 等. 长杆射弹侵彻混凝土实验研究 [J]. 爆炸与冲击, 2002, 22(2): 174-178.
    [6] Forrestal M J, Luk V K. Penetration into Soil Targets [J]. Int J Impact Eng, 1992, 12(3): 427-444.
    [7] Forrestal M J, Frew D J, Hickerson J P, et al. Penetration of Concrete Targets with Acceleration-Time Measurements [J]. Int J Impact Eng, 2003, 28: 479-497.
    [8] Zhou N, Ren H Q, Shen Zh W, et al. Experimental Study on Overload Characteristics of Projectile Penetrating Reinforced Concrete [J]. Journal of Experimental Mechanics, 2005, 21(5): 572-578. (in Chinese)
    [9] 周宁, 任辉启, 沈兆武, 等. 侵彻钢筋混凝土过程中弹丸过载特性的实验研究 [J]. 实验力学, 2005, 21(5): 572-578.
    [10] 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]. Int J Impact Eng, 1994, 15(4): 395-405.
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Study on Penetration of Concrete Targets by Ogive-Nose Steel Projectile

    Corresponding author: ZHOU Ning; 
  • 1. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China;
  • 2. Luoyang Institute of Hydraulical Engineer, Luoyang 471023, China

Abstract: We conducted acceleration-time measurement of penetration experiments in targets with 100 mm diameter, 4.0 caliber-radius-head, 25 kg projectiles. The 3 m3 m3m and 2 m2 m2m concrete targets had an nominal unconfined compressive strength of 35 MPa and density 2 450 kg/m3. Projectiles were designed to contain a single-channel acceleration data recorder, so we recorded accelerations in the bore of the gun and accelerations during the penetration event. A 100 mm diameter powder gun launched the 25 kg projectiles to striking velocities between 310 and 632 m/s. We compared the measured penetration depths and acceleration-time data with the calculated results using Forrestal formula. The calculated results are in good agreement with rigid-body acceleration measurements for the rise times and peak plateau responses. The acceleration-time data of projectiles can be helpful for devising armour-piercing projectile and defense engineering.

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