Numerical simulation on penetration of concrete target by shaped charge jet with SPH method

Qiang Hongfu; Fan Shujia; Chen Fuzhen; Liu Hu

doi:10.11883/1001-1455(2016)04-0516-09

Volume 36 Issue 4

Oct. 2018

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Qiang Hongfu, Fan Shujia, Chen Fuzhen, Liu Hu. Numerical simulation on penetration of concrete target by shaped charge jet with SPH method[J]. Explosion And Shock Waves, 2016, 36(4): 516-524. doi: 10.11883/1001-1455(2016)04-0516-09

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Qiang Hongfu, Fan Shujia, Chen Fuzhen, Liu Hu. Numerical simulation on penetration of concrete target by shaped charge jet with SPH method[J]. Explosion And Shock Waves, 2016, 36(4): 516-524. doi: 10.11883/1001-1455(2016)04-0516-09

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Numerical simulation on penetration of concrete target by shaped charge jet with SPH method

doi: 10.11883/1001-1455(2016)04-0516-09

Power Engineering Department, Xi'an Hi-Tech Institute, Xi'an 710025, Shaanxi, China

Received Date: 2014-12-03
Rev Recd Date: 2015-03-24
Publish Date: 2016-07-25

Abstract

Abstract

On the basis of the smoothed particle hydrodynamics (SPH) method with fully variable smoothing lengths, the modified Ott-Schnetter SPH method was used to cope with the computational instability in the large density gradient problems. The Holmquist-Johnson-Cook constitutive model was used to cope with the deformation and damage of concrete under impact. By comparing with the corresponding ones simulated by the non-linear finite element program LS-DYNA, the changing courses of the von-Mises stress and cracks in the concrete targets, and the velocities at the some special points of the jet head were analyzed, which proved the feasibility and accuracy of the SPH method. Other two concrete plates with different sizes penetrated by shaped charge jets were also simulated. The results are in good agreement with the physical principle. So this method can be used to deal with the multi-material and large deformation problems such as detonation and impact.
- mechanics of explosion,
- penetration,
- smoothed particle hydrodynamics,
- concrete,
- damage

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References(17)

References

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