Influence of void coalescence on spall evolution of ductile polycrystalline metal under dynamic loading

Zhang Fengguo; Zhou Hongqiang; Hu Xiaomian; Wang Pei; Shao Jianli; Feng Qijing

doi:10.11883/1001-1455(2016)05-0596-07

Volume 36 Issue 5

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Zhang Fengguo, Zhou Hongqiang, Hu Xiaomian, Wang Pei, Shao Jianli, Feng Qijing. Influence of void coalescence on spall evolution of ductile polycrystalline metal under dynamic loading[J]. Explosion And Shock Waves, 2016, 36(5): 596-602. doi: 10.11883/1001-1455(2016)05-0596-07

Citation:

Zhang Fengguo, Zhou Hongqiang, Hu Xiaomian, Wang Pei, Shao Jianli, Feng Qijing. Influence of void coalescence on spall evolution of ductile polycrystalline metal under dynamic loading[J]. Explosion And Shock Waves, 2016, 36(5): 596-602. doi: 10.11883/1001-1455(2016)05-0596-07

Citation:

Zhang Fengguo, Zhou Hongqiang, Hu Xiaomian, Wang Pei, Shao Jianli, Feng Qijing. Influence of void coalescence on spall evolution of ductile polycrystalline metal under dynamic loading[J]. Explosion And Shock Waves, 2016, 36(5): 596-602. doi: 10.11883/1001-1455(2016)05-0596-07

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Influence of void coalescence on spall evolution of ductile polycrystalline metal under dynamic loading

doi: 10.11883/1001-1455(2016)05-0596-07

1.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
2.
Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

Received Date: 2015-03-11
Rev Recd Date: 2016-01-20
Publish Date: 2016-09-25

Abstract

Abstract

In the present study, with a view to solve the spallation of ductile metal under intense dynamic loading, we develop a new void coalescence criterion accounting for the damage and void geometry based on the geometric relationship between voids. Following the principle of energy conservation, we reveal the physical mechanism explaining the influence of void coalescence on the growth of damage. The comparison between calculated results and experiment data indicates that void coalescence leads to rapid growth of damage, reduction of void numbers, and increase of average void size.
- solid mechanics,
- spallation,
- intense dynamic loading,
- ductile metal,
- void coalescence,
- damage evolution

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References(25)

References

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