Viscosity of aluminum under shock-loading conditions

A reliable data treatment method is critical for viscosity measurements using the disturbance amplitude damping method of shock waves. In this paper the finite difference method is used to obtain the numerical solutions for the disturbance amplitude damping behaviour of the sinusoidal shock front in...

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Published in:Chinese physics B 2011-06, Vol.20 (6), p.505-508
Main Author: 马小娟 刘福生 张明建 孙燕云
Format: Article
Language:English
Subjects:
Aluminum
Amplitudes
Damping
Disturbances
Finite difference method
Mathematical models
Shear viscosity
Viscosity
冲击压力
加载条件
宾夕法尼亚州
数据处理方法
有限差分方法
粘度测量
铝
阻尼行为
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creator 马小娟 刘福生 张明建 孙燕云
description A reliable data treatment method is critical for viscosity measurements using the disturbance amplitude damping method of shock waves. In this paper the finite difference method is used to obtain the numerical solutions for the disturbance amplitude damping behaviour of the sinusoidal shock front in a flyer-impact experiment. The disturbance amplitude damping curves are used to depict the numerical solutions of viscous flow. By fitting the experimental data to the numerical solutions of different viscosities, we find that the effective shear viscosity coefficients of shocked aluminum at pressures of 42, 78 and 101 GPa are （1500±100） Pa s, （2800±100） Pa.s and （3500±100） Pa.s respectively. It is clear that the shear viscosity of aluminum increases with an increase in shock pressure, so aluminum does not melt below a shock pressure of 101 GPa. This conclusion is consistent with the sound velocity measurement.
doi_str_mv 10.1088/1674-1056/20/6/068301
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In this paper the finite difference method is used to obtain the numerical solutions for the disturbance amplitude damping behaviour of the sinusoidal shock front in a flyer-impact experiment. The disturbance amplitude damping curves are used to depict the numerical solutions of viscous flow. By fitting the experimental data to the numerical solutions of different viscosities, we find that the effective shear viscosity coefficients of shocked aluminum at pressures of 42, 78 and 101 GPa are （1500±100） Pa s, （2800±100） Pa.s and （3500±100） Pa.s respectively. It is clear that the shear viscosity of aluminum increases with an increase in shock pressure, so aluminum does not melt below a shock pressure of 101 GPa. This conclusion is consistent with the sound velocity measurement.</notes><notes>Ma Xiao-Juan, Liu Fu-Sheng, Zhang Ming-Jian, and Sun Yan-Yun（School of Physical Science and Technology, Southwest giaotong University, Chengdu 610031, China）</notes><notes>shear viscosity, aluminum, shock-load</notes><notes>11-5639/O4</notes><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>A reliable data treatment method is critical for viscosity measurements using the disturbance amplitude damping method of shock waves. In this paper the finite difference method is used to obtain the numerical solutions for the disturbance amplitude damping behaviour of the sinusoidal shock front in a flyer-impact experiment. The disturbance amplitude damping curves are used to depict the numerical solutions of viscous flow. By fitting the experimental data to the numerical solutions of different viscosities, we find that the effective shear viscosity coefficients of shocked aluminum at pressures of 42, 78 and 101 GPa are （1500±100） Pa s, （2800±100） Pa.s and （3500±100） Pa.s respectively. It is clear that the shear viscosity of aluminum increases with an increase in shock pressure, so aluminum does not melt below a shock pressure of 101 GPa. This conclusion is consistent with the sound velocity measurement.</abstract><pub>IOP Publishing</pub><doi>10.1088/1674-1056/20/6/068301</doi><tpages>4</tpages></addata></record>
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source Institute of Physics:Jisc Collections:IOP Publishing Read and Publish 2024-2025 (Reading List)
subjects Aluminum
Amplitudes
Damping
Disturbances
Finite difference method
Mathematical models
Shear viscosity
Viscosity
冲击压力
加载条件
宾夕法尼亚州
数据处理方法
有限差分方法
粘度测量
铝
阻尼行为
title Viscosity of aluminum under shock-loading conditions
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