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兵工学报 ›› 2018, Vol. 39 ›› Issue (4): 698-706.doi: 10.3969/j.issn.1000-1093.2018.04.009

• 论文 • 上一篇    下一篇

低速弹体贯穿钢筋混凝土多层靶的破坏特性

戴湘晖, 段建, 周刚, 初哲, 王可慧, 古仁红, 李明, 杨慧, 沈子楷   

  1. (西北核技术研究所 强动载与效应实验室, 陕西 西安 710024)
  • 收稿日期:2017-05-03 修回日期:2017-05-03 上线日期:2018-05-30
  • 通讯作者: 段建(1979—),男,副研究员 E-mail:duanjian@nint.ac.cn
  • 作者简介:戴湘晖(1986—),男,工程师,博士研究生。E-mail: daixianghui@nint.ac.cn

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

DAI Xiang-hui, DUAN Jian, ZHOU Gang, CHU Zhe, WANG Ke-hui, GU Ren-hong, LI Ming, YANG Hui, SHEN Zi-kai   

  1. (Laboratory of Intense Dynamic Loading and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, Shaanxi, China)
  • Received:2017-05-03 Revised:2017-05-03 Online:2018-05-30

摘要: 为获取大尺寸弹体对4层钢筋混凝土薄靶的贯穿破坏特性,开展了实验与仿真研究。以300 mm口径平衡炮作为发射平台,驱动280 kg截卵形弹体以337 m/s低速正贯穿4层抗压强度为41.8 MPa的钢筋混凝土薄靶,发现靶板破坏区域由锥形前坑区和后坑区组成。在此基础上建立了弹体正贯穿钢筋混凝土薄靶的破坏模型,并对破坏特性相关因素进行了分析。建立了有限元数值仿真模型,采用有限元分析软件LS-DYNA对整个贯穿过程进行了计算。将数值仿真结果与实验结果进行了对比,结果表明:速度及动能消耗最大误差分别为0.82%和6.21%,一致性较好;建立的数值仿真模型可用于弹体对多层靶侵彻能力的预估。

关键词: 弹体, 贯穿, 钢筋混凝土, 多层靶

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

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