Heterogeneous fragmentation of metallic liquid microsheet with high velocity gradient

Large-scale molecular dynamics simulations are performed to study the fragmentation of metallic liquid sheets with high velocity gradient. Dynamic fragmentation of the system involves the formation of a network of fragments due to the growth and coalescence of holes, decomposition of the network int...

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Bibliographic Details
Published in:Chinese physics B 2016-01, Vol.25 (1), p.746-749
Main Author: 何安民 王裴 邵建立
Format: Article
Language:English
Subjects:
Clusters
Dynamical systems
Dynamics
Filaments
Fragmentation
Fragments
Liquid sheets
Networks
不均匀性
分子动力学模拟
分解过程
同步
异构
网络结构
速度梯度
金属液
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Summary:Large-scale molecular dynamics simulations are performed to study the fragmentation of metallic liquid sheets with high velocity gradient. Dynamic fragmentation of the system involves the formation of a network of fragments due to the growth and coalescence of holes, decomposition of the network into filaments, and further breakup of the filaments into spherical clusters. The final size distribution of the fragmented clusters in the large volume limit is found to obey a bilinear exponential form, which is resulted from the heterogeneous breakup of quasi-cylindrical filaments. The main factors contributing to fragmentation heterogeneity are introduced, including strain rate inhomogeneity and matter distribution nonuniformity of fragments produced during decomposition of the network structure.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/25/1/017102