钢筋混凝土靶板在弹丸冲击及爆炸载荷下响应的数值模拟

孟阳; 文鹤鸣

doi:10.11858/gywlxb.2011.04.014

钢筋混凝土靶板在弹丸冲击及爆炸载荷下响应的数值模拟

doi: 10.11858/gywlxb.2011.04.014

孟阳,
文鹤鸣

中国科学技术大学中国科学院材料力学行为与设计重点实验室，安徽合肥 230027

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通讯作者:
文鹤鸣

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出版历程
- 收稿日期: 2009-11-17
- 修回日期: 2010-01-26
- 刊出日期: 2011-08-15

Numerical Simulation of the Response of Reinforced Concrete Slabs to Projectile Impact or Explosive Loading

CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China

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Corresponding author: WEN He-Ming

摘要

摘要: 采用HJC混凝土损伤本构模型及LS-DYNA的流固耦合算法，分别对钢筋混凝土靶板在弹丸冲击和爆炸载荷作用下的响应进行了有限元数值模拟，其中模拟参数由实验数据拟合重新获取。将模拟结果与实验结果和经验公式进行对比分析，结果表明：数值模拟再现了弹体贯穿靶板过程中的开坑、隧道及漏斗碎裂区，计算得到的弹体弹道极限及残余速度与实验数据吻合较好；此外，数值模拟也很好地再现了炸药爆炸后冲击波的传播过程以及爆炸载荷作用下混凝土的破坏情况，模拟结果与实验现象具有良好的一致性。
- 钢筋混凝土靶板 /
- 弹丸撞击 /
- 爆炸加载 /
- 数值模拟
Abstract: Numerical simulation is first conducted herein of the perforation of reinforced concrete slabs by an ogival-nosed projectile using LS-DYNA. The triaxial test data reported in this paper for the 48 MPa concrete are used to determine the values of the parameters employed in the Holmquist-Johnson-Cook (HJC) model. It is shown that the numerical simulations correlate well with the experimental observations in terms of ballistic limit, residual velocity, impact crater, penetration tunnel and scabbing crater. The response of reinforced concrete slabs to explosive loading is also studied numerically by the fluidsolid coupled method of LS-DYNA. The simulation reproduces the transient process of the shock wave and the main rupture process of the slabs. The numerically obtained pressure-time histories are found to be in reasonable agreement with those predicted by the empirical equations; the failure patterns obtained by the numerical simulation are found to be similar to those obtained experimentally.
- reinforced concrete slab /
- projectile impact /
- explosive loading /
- numerical simulation

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参考文献(22)

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