Volume 41 Issue 6
Jun.  2021
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XU Shilang, WU Ping, ZHOU Fei, LI Qinghua, ZENG Tian, JIANG Xiao. Experimental investigation and numerical prediction on resistance of reactive powder concrete to multiple penetration[J]. Explosion And Shock Waves, 2021, 41(6): 063301. doi: 10.11883/bzycj-2020-0165
Citation: XU Shilang, WU Ping, ZHOU Fei, LI Qinghua, ZENG Tian, JIANG Xiao. Experimental investigation and numerical prediction on resistance of reactive powder concrete to multiple penetration[J]. Explosion And Shock Waves, 2021, 41(6): 063301. doi: 10.11883/bzycj-2020-0165

Experimental investigation and numerical prediction on resistance of reactive powder concrete to multiple penetration

doi: 10.11883/bzycj-2020-0165
  • Received Date: 2020-05-25
  • Rev Recd Date: 2020-10-22
  • Available Online: 2021-04-21
  • Publish Date: 2021-06-05
  • Reactive powder concrete (RPC) has ultra-high strength and excellent crack resistance. To study the damage law of the RPC subjected to multiple impact loads, a 25 mm caliber smoothbore gun was used to penetrate the RPC cylindrical target with the diameter of 600 mm and the height of 600 mm. In addition, the experimental data of the target after each penetration was obtained, and the correlation coefficient in the Forrestal empirical formula was determined. Based on the K&C constitutive model and the existing experimental data of the RPC, the model parameters for the RPC were determined systematically by modifying the strength and surface parameters, damage parameters, equation-of-state parameters, damage evolution model, the strain rate effect. The restart function in the LS-DYNA software was used to simulate the damage results of the projectile repeatedly penetrating the RPC target. The simulation results are basically consistent with the experimental results, and the effectiveness of the simulation method is verified. Finally, the numerical prediction of the penetration resistance experiment of the RPC target with the length of 2 200 mm, the width of 2 200 mm, and the height of 1 260 mm was carried out. The relationship between the penetration depth and the projectile velocity, the minimum velocity of the projectile passing through the target and the peak acceleration during projectile penetration were obtained.
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