Application of 3D FE-SPH adaptive coupling algorithm to penetration analysis of spaced multi-layered metallic targets

Hu De-an; Sun Zhan-hua; Zhu Ting

doi:10.11883/1001-1455-(2015)03-0416-07

Volume 35 Issue 3

Jun. 2015

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Hu De-an, Sun Zhan-hua, Zhu Ting. Application of 3D FE-SPH adaptive coupling algorithm to penetration analysis of spaced multi-layered metallic targets[J]. Explosion And Shock Waves, 2015, 35(3): 416-422. doi: 10.11883/1001-1455-(2015)03-0416-07

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Hu De-an, Sun Zhan-hua, Zhu Ting. Application of 3D FE-SPH adaptive coupling algorithm to penetration analysis of spaced multi-layered metallic targets[J]. Explosion And Shock Waves, 2015, 35(3): 416-422. doi: 10.11883/1001-1455-(2015)03-0416-07

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Application of 3D FE-SPH adaptive coupling algorithm to penetration analysis of spaced multi-layered metallic targets

doi: 10.11883/1001-1455-(2015)03-0416-07

Hu De-an^1
,,
Sun Zhan-hua^{1, 2},
Zhu Ting¹

1.
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, Hunan, China
2.
Unit 94647 PLA, Fuzhou 340026, Fujian, China

Received Date: 2013-03-06
Rev Recd Date: 2014-05-19
Publish Date: 2015-05-25

Abstract

Abstract

As the metal fragments of penetration can not be effectively simulated by finite element method(FEM), a three-dimensional(3D)calculation code was developed to simulate penetration problem of multi-layered spaced metal plates based on theory of 3D FE-SPH adaptive coupling algorithm.Numerical models are approximated initially by tetrahedral elements.When equivalent plastic strain of elements reaches a specified value, they are converted into particles and are calculated by Smoothed Particle Hydrodynamics(SPH)method.Then the regions of large deformation and crush are simulated by SPH method, as SPH method overcome the distortion of elements in FEM.Contact method and coupling algorithm are used to calculate the interface between FEM and SPH method. Two numerical examples are presented to validate the 3D FE-SPH code by representing penetration process of spaced multi-layered metallic targets.The numerical simulation results show that good accuracy and stability are compared to experiment, when equivalent plastic strain is used as criterion of conversion.
- mechanics of explosion,
- FE-SPH coupling method,
- penetration,
- equivalent plastic strain,
- multi-layered metallic targets

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References(24)

References

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