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Chin. Phys. B, 2014, Vol. 23(4): 047102    DOI: 10.1088/1674-1056/23/4/047102

Molecular dynamics simulations of jet breakup and ejecta production from a grooved Cu surface under shock loading

He An-Min, Wang Pei, Shao Jian-Li, Duan Su-Qing
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
Abstract  Large-scale non-equilibrium molecular dynamics simulations are performed to explore the jet breakup and ejecta production of single crystal Cu with a triangular grooved surface defect under shock loading. The morphology of the jet breakup and ejecta formation is obtained where the ejecta clusters remain spherical after a long simulation time. The effects of shock strength as well as groove size on the steady size distribution of ejecta clusters are investigated. It is shown that the size distribution of ejecta exhibits a scaling power law independent of the simulated shock strengths and groove sizes. This distribution, which has been observed in many fragmentation processes, can be well described by percolation theory.
Keywords:  molecular dynamics      ejection  
Received:  29 August 2013      Revised:  29 September 2013      Accepted manuscript online: 
PACS:  71.15.Pd (Molecular dynamics calculations (Car-Parrinello) and other numerical simulations)  
Fund: Project supported by the Science and Technology Development Foundation of China Academy of Engineering Physics (Grant No. 2013A0201010).
Corresponding Authors:  He An-Min     E-mail:
About author:  71.15.Pd; 62.50.+p

Cite this article: 

He An-Min, Wang Pei, Shao Jian-Li, Duan Su-Qing Molecular dynamics simulations of jet breakup and ejecta production from a grooved Cu surface under shock loading 2014 Chin. Phys. B 23 047102

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