连续打击下钢筋混凝土靶标应变响应研究
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南京理工大学

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TJ55

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Research on Strain Response of Reinforced Concrete Target under Continuous Strike
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    摘要:

    为研究连续打击下钢筋混凝土靶标的应变响应特性,本文进行了两次侵爆战斗部的有限元仿真,开展了侵爆战斗部连续打击钢筋混凝土靶标模拟试验,将整体试验过程分为侵彻-内爆-侵彻-内爆,通过对仿真数据与试验数据的结合对比,验证了仿真模型的有效性,总结了应变响应的规律。结果表明在第一次打击过程中,仿真与试验的应变峰值相对误差分别为4.2%、8.5%、13.8%。第二次仿真由于靶标的累积效应使得仿真误差较大,但仍能反映应变的性质。在连续打击后靶标背面产生裂缝并逐渐扩大,试验数据中应变响应持续时间增加。

    Abstract:

    In order to study the strain response characteristics of reinforced concrete targets under continuous impact, this paper conducted two finite element simulations of the infiltration and explosion warhead, and carried out simulation experiments of continuous impact of the infiltration and explosion warhead on reinforced concrete targets. The overall experimental process was divided into penetration implosion penetration implosion. By comparing the simulation data with the experimental data, the effectiveness of the simulation model was verified, and the law of strain response was summarized. The results showed that the relative errors between the simulated and experimental strain peaks during the first strike were 4.2%, 8.5%, and 13.8%, respectively. The second simulation had a large simulation error due to the cumulative effect of the target, but it still reflected the nature of the strain. After continuous strikes, cracks appear on the back of the target and gradually expand, and the duration of strain response in the experimental data increases.

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  • 收稿日期:2024-12-03
  • 最后修改日期:2024-12-13
  • 录用日期:2024-12-16
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