金属材料再加载准弹性响应的实验验证

宋萍; 周显明; 袁帅; 李加波; 汪小松

doi:10.11858/gywlxb.2007.03.019

金属材料再加载准弹性响应的实验验证

doi: 10.11858/gywlxb.2007.03.019

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

详细信息

通讯作者:
宋萍

计量
- 文章访问数: 14476
- HTML全文浏览量: 929
- PDF下载量: 1012
出版历程
- 收稿日期: 2006-04-26
- 修回日期: 2007-01-24
- 刊出日期: 2007-09-05

Experimental Validation of Quasi-Elastic Response of Metal during Reloading Process

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

More Information

Corresponding author: SONG Ping

摘要

摘要: 用波反射法设计了一维应变冲击实验，由时间分辨VISAR系统（Velocity Interferometer System for Any Reflection）测量了镁铝合金的冲击-再加载速度波剖面。结果显示，在排除窗口反射稀疏波的情况下，从24 GPa冲击态开始的再加载存在明显的准弹性响应，证实了Asay等报道的二次压缩准弹性响应是材料本征特性。并对金属材料高压本构参量实验测量的关键技术进行了探讨。
- 波反射 /
- 再加载 /
- 准弹性
Abstract: An uniaxial strain experiment of a magnesium alloy (brand:MB2) disk under shock loading and reloading was designed by a wave reflection method. Time-resolved interfacial velocity between the MB2 sample and a LiF window was measured by a VISAR (Velocity Interferometer System for Any Reflection) probe during the dynamic loading. Our result reveals that, under a better test condition with no rarefaction disturbing from the window (present in previous experiments), an elastic-plastic response does exist in the process of reloading from an initial shock state (24 GPa). This validates that the quasi-elastic response of metals under recompression, which had been reported by Asay et al, is an intrinsic character of the materials. Some discussion about the experimental technique for measuring the constitutive parameters of metals at high pressures will be presented also.
- wave reflection /
- reloading /
- quasi-elastic

HTML全文

参考文献(14)

Asay J R, Chhabildas L C, Dandekar D P. Shear Strength of Shock-Loaded Polycrystalline Tungsten [J]. J Appl Phys, 1980, 51: 4774-4783.

Duffy T S, Ahrens T J. Compressional Sound Velocity, Equation of State, and Constitutive Response of Shock-Compressed Magnesium Oxide [J]. J Geophys Res, 1995, 100: 529-542.

Asay J R, Chhabildas L C. Determination of the Shear Strength of Shock Copressed 6061-T6 Aluminum [A]//Proceedings of International Conference on the Metallurgical Effects of High Strain Rate Determination and Fabrication [C]. Albuquerque, 1980: 417-429.

Chhabildas L C, Wise J L, Asay J R. Reshock and Release Behavior of Berylium [R]. SAND-80-2864C, 1980.

Huang H, Asay J R. Compressive Strength Measurements in Aluminum for Shock Compression over the Stress Range of 4~22 GPa [J]. J Appl Phys, 2005, 98: 033524(1)-033524(16).

Wang L L. Foundation of Stress Waves [M]. Beijing: National Defence Industry Press, 1985. (in Chinese)

王礼立. 应力波基础 [M]. 北京: 国防工业出版社, 1985.

Hu Sh L. Laser Interferometry for Measuring Velocity [M]. Beijing: National Defence Industry Press, 2001. (in Chinese)

胡绍楼. 激光干涉测速技术 [M]. 北京: 国防工业出版社, 2001.

Zhou X M, Jing F Q. VISAR's Data Processing VEX 2. 0 [J]. Chinese Journal of High Pressure Physics, 1999, 13(Supplement): 286-290. (in Chinese)

周显明, 经福谦. VISAR数据处理软件VEX 2. 0 [J]. 高压物理学报, 1999, 13(增刊): 286-290.

Marsh S P. LASL Shock Hugoniot Data [Z]. US: Univercity of California Press, 1980.

Steinberg D J, Cochran S G, Guinan M W. A Constitutive Model for Metals Applicable at High Strain Rate [J]. J Appl Phys, 1980, 51(3): 1498-1504.

Duffy T S, Ahrens T J. Compressional Sound Velocity, Equation of State, and Constitutive Response of Shock-Compressed Magnesium Oxide [J]. J Geophys Res, 1995, 100: 529-542.

施引文献

资源附件(0)

访问统计