Numerical Simulation of Granite Penetration Based on Lagrange and SPH Algorithm

JIN Shaohu; LIU Kewei; HUANG Jin; YANG Jiacai; JIN Shaobo

doi:10.11858/gywlxb.20200665

Volume 35 Issue 5

Sep 2021

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Chinese Journal of High Pressure Physics > 2021 > 35(5): 055103.

JIN Shaohu, LIU Kewei, HUANG Jin, YANG Jiacai, JIN Shaobo. Numerical Simulation of Granite Penetration Based on Lagrange and SPH Algorithm[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 055103. doi: 10.11858/gywlxb.20200665

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JIN Shaohu, LIU Kewei, HUANG Jin, YANG Jiacai, JIN Shaobo. Numerical Simulation of Granite Penetration Based on Lagrange and SPH Algorithm[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 055103. doi: 10.11858/gywlxb.20200665

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Numerical Simulation of Granite Penetration Based on Lagrange and SPH Algorithm

doi: 10.11858/gywlxb.20200665

School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China

Received Date: 31 Dec 2020
Rev Recd Date: 14 Mar 2021

Abstract

Abstract

To study the influence of different algorithms on penetration simulations of granite target subjected to projectile, Lagrange, SPH-Lagrange coupling and SPH (smooth particle hydrodynamics) algorithms are used for penetration simulations, based on Lagrange and SPH algorithms within LS-DYNA software. By comparing the numerical results through calculation efficiency, penetration depth, velocity attenuation, target damage and Mises stress distribution, the advantages and disadvantages of three algorithms are obtained. The results show that: Lagrange algorithm has the highest calculation efficiency and accuracy, but it has some problems such as element distortion, no impact sputtering, and no back-pit area. Although SPH algorithm has the lowest calculation efficiency, the calculated target damage is basically consistent with experiment. SPH-Lagrange coupling algorithm has both advantages, but it can produce stress hysteresis and unstable stress wave attenuation. Lagrange and SPH-Lagrange coupling algorithms are preferred in large-scale simulation.
- projectile penetration,
- granite target,
- Lagrange algorithm,
- SPH-Lagrange coupling algorithm,
- SPH algorithm

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References(24)

References

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Numerical Simulation of Granite Penetration Based on Lagrange and SPH Algorithm

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