Molecular dynamics simulations of shock response for nano-structure foamed gold

Liu Wei; Duan Xiaoxi; Yang Weiming; Liu Hao; Zhang Huan; Ye Qing; Sun Liang; Wang Zhebin; Jiang Shaoen

doi:10.11884/HPLPB201830.170478

Volume 30 Issue 5

May 2018

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Article Navigation > High Power Laser and Particle Beams > 2018 > 30(5): 052002

Zhang Xue, Xu Qiang, Wang Yong, et al. Multipactor phenomenon of high-power pill-box window[J]. High Power Laser and Particle Beams, 2016, 28: 023004. doi: 10.11884/HPLPB201628.023004

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Liu Wei, Duan Xiaoxi, Yang Weiming, et al. Molecular dynamics simulations of shock response for nano-structure foamed gold[J]. High Power Laser and Particle Beams, 2018, 30: 052002. doi: 10.11884/HPLPB201830.170478

Zhang Xue, Xu Qiang, Wang Yong, et al. Multipactor phenomenon of high-power pill-box window[J]. High Power Laser and Particle Beams, 2016, 28: 023004. doi: 10.11884/HPLPB201628.023004

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Molecular dynamics simulations of shock response for nano-structure foamed gold

doi: 10.11884/HPLPB201830.170478

Research Center of Laser Fusion, CAEP, P.O.Box 919-986, Mianyang 621900, China

Received Date: 2017-11-24
Rev Recd Date: 2018-01-23
Publish Date: 2018-05-15

Abstract

Abstract

Different embeded-atom method potentials of gold were used in molecular dynamics simulation for shocked solid gold. Comparison between the simulation results and the experiment data of Hugoniot state for gold has been carried out. The potentials whose corresponding simulating shocked Hugoniot data are consistent with theoretical prediction were used in subsequent foamed gold simulations. The initial configuration of foamed gold has been constructed by means of randomly accumulating sphere shells in the simulation box. Three kinds of configuration have been obtained via changing the thickness, outer-radius of the sphere shell and potentials. Hugoniot states of porous polycrystal gold with 3-dimensional nanostructure under shock compression have been simulated by means of molecular dynamics(MD) method. Comparison between simulated results with porous equation of state(EOS) model and existing EOS database for Au has been done. The discrepancy suggests that experiments for the state of porous gold are necessary to verify the theory and the simulation method for porous gold.
- stability of nano-structure gold foams,
- foamed gold,
- molecular dynamics simulation,
- shock Hugoniot curve of nano-foams

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References

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