Material failure models in SPH simulation of debris cloud

DI Dening; CHEN Xiaowei

doi:10.11883/bzycj-2017-0328

Volume 38 Issue 5

Jul. 2018

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DI Dening, CHEN Xiaowei. Material failure models in SPH simulation of debris cloud[J]. Explosion And Shock Waves, 2018, 38(5): 948-956. doi: 10.11883/bzycj-2017-0328

Citation:

DI Dening, CHEN Xiaowei. Material failure models in SPH simulation of debris cloud[J]. Explosion And Shock Waves, 2018, 38(5): 948-956. doi: 10.11883/bzycj-2017-0328

DI Dening, CHEN Xiaowei. Material failure models in SPH simulation of debris cloud[J]. Explosion And Shock Waves, 2018, 38(5): 948-956. doi: 10.11883/bzycj-2017-0328

Citation:

DI Dening, CHEN Xiaowei. Material failure models in SPH simulation of debris cloud[J]. Explosion And Shock Waves, 2018, 38(5): 948-956. doi: 10.11883/bzycj-2017-0328

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Material failure models in SPH simulation of debris cloud

doi: 10.11883/bzycj-2017-0328

DI Dening¹,
CHEN Xiaowei^{2, 3
,
,}

1.
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
2.
Advanced Research Institute for Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China
3.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Received Date: 2017-08-26
Rev Recd Date: 2017-11-08
Publish Date: 2018-09-25

Abstract

Abstract

The smoothed particle hydrodynamics (SPH) method is widely used in debris cloud simulation under hypervelocity impact. The SPH solver in AUTODYN was employed to investigate the effects of the no-failure model, the Grady failure model and the maximum tension failure model on the simulation results of debris cloud. When using the no-failure model, the simulation result and material response were not consistent with the experiment. Compared with the Grady model, the material under the maximum tension model was more difficult to fail, which would slightly weaken the expansion of debris cloud, produce less but heavier debris because of particles gathering, and thus improve the penetration performance of debris cloud. Similarly, by increasing the failure stress threshold, the above result was also obtained. Considering the material response and debris distribution, the simulation result by the Grady model was closer to the experiment. However, the difference between the Grady model and the maximum tension model was related to the impact condition, and more complete fragmentation of the material would lead to a smaller difference.
- failure model,
- SPH method,
- debris cloud,
- debris distribution,
- hypervelocity impact

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References(8)

References

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