-锆低压动态力学特性研究

李英华; 蔡灵仓; 张林; 李英雷

doi:10.11858/gywlxb.2007.02.012

-锆低压动态力学特性研究

doi: 10.11858/gywlxb.2007.02.012

中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621900

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通讯作者:
李英华

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出版历程
- 收稿日期: 2006-02-24
- 修回日期: 2006-04-10
- 发布日期: 2007-06-05

Dynamic Behavior of -Zirconium at Low Pressure

Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China

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Corresponding author: LI Ying-Hua

摘要

摘要: 在3.310-4～1.5103 s-1应变率范围内获得了-锆的应力-应变曲线，给出了Johnson-Cook本构拟合参数。利用含动态损伤与断裂的一维程序，较好复显了在峰值应力4.3～5.1 GPa范围测量的-锆自由面速度剖面，验证了确定的-锆低压动态力学参数的合理性。
- -锆 /
- Johnson-Cook本构参数 /
- 自由面速度剖面
Abstract: The stress-strain curves of the -zirconium which strain rate ranges from 3.310-4 s-1 to 1.5103 s-1 under room temperature were obtained, and the parameters of Johnson-Cook model were determined through these experiments. The computed free-surface velocity profiles using dynamic damage and fracture model consist with the experimental measurements at 4.3 GPa and 5.1 GPa peak pressure. The comparison indicates that the determined dynamic parameters of -zirconium are valid.
- -zirconium /
- Johnson-Cook constitutive parameter /
- free surface velocity profiles

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参考文献(17)

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