Damage Effect of Low Velocity Projectile Perforating into Multi-layered Reinforced Concrete Slabs

doi:10.3969/j.issn.1000-1093.2018.04.009

Abstract

Abstract: The damage effect of large-scale projectile perforating into four-layered thin reinforced concrete (RC) slabs is investigated through experiment and numerical simulation. The truncated-ogive-nosed projectile with a mass of 280 kg is launched from a 300 mm diameter balance gun to impact on four-layered thin RC slabs with the unconfined cylinder compressive strength of 41.8 MPa at the striking velocity of 337 m/s. A damage model of thin RC slabs is presented based on the post-test macro-analysis of the damage area of RC slabs, which consists of front and rear craters. The related factors of damage effect are obtained and analyzed in detail. A finite element model is established, and the software LS-DYNA is employed to simulate the perforation process. The numerically simulated and experimentally measured values of residual velocity and kinetic energy consumption are compared, with the maximum deviations of 0.82% and 6.21%, respectively. The simulated results are in good agreement with the experimental results. The proposed finite element model can be used for the performance evaluation of projectile perforating into multi-layered slabs.Key

Key words: projectile, perforation, reinforcedconcrete, multi-layeredslab

CLC Number:

O385
TJ012.4

DAI Xiang-hui, DUAN Jian, ZHOU Gang, CHU Zhe, WANG Ke-hui, GU Ren-hong, LI Ming, YANG Hui, SHEN Zi-kai. Damage Effect of Low Velocity Projectile Perforating into Multi-layered Reinforced Concrete Slabs[J]. Acta Armamentarii, 2018, 39(4): 698-706.

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第39卷
第4期2018 年4月兵工学报ACTA
ARMAMENTARIIVol.39No.4Apr.2018

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