-
摘要: 用二级轻气炮作为动态加载装置,用电探针技术和阻滞法在80~160 GPa压力范围内测量了平均初始密度为6.904 g/cm3的多孔铁的冲击压缩性。实验结果表明,其冲击压缩线可以用D=2.977+1.603up的线性关系描述(D,up分别是冲击波速度和粒子速度,单位km/s),这一结果与国外的实验结果和Wu-Jing模型的预测结果相符。
-
关键词:
- 多孔铁 /
- 冲击压缩性 /
- 冲击波速度粒子速度关系
Abstract: Shock wave velocities in porous iron with initial average density 6.904 g/cm3 were measured using electric pin method in the pressure range of 80 to 160 GPa. The experimental results indicate that the dynamic compressive properties of this porous iron can be described using a linear relation between the shock wave velocity D and the particle velocity up, i.e., D=2.977+1.603up (km/s). The results are in good agreement with LASL data and the value predicted by Wu-Jing theory.-
Key words:
- porous iron /
- shock compression /
- D-up curve
-
Butcher B M. Shock Wave Compaction of Porous Aluminium [J]. J Appl Phys, 1974, 45: 3864. Marsh S P. LASL Hugoniot Data [M]. Berkeley: University of California Press, 1980. Herrmann W J. Static and Dynamic Core-Collapse Relations for Ductile Porous Materials [J]. Appl Phys, 1972, 40: 1626. Petrie M W, Page N W. An Equation of State for Shock Loaded Powders [J]. J Appl Phys, 1991, 69(6): 3517. DijKen D K, de Hosson J Th M. Thermodynamic Model of the Compaction of Powder Materials by Shock Waves [J]. J Appl Phys, 1994, 75: 203. Wu Qiang, Jing Fuqian. Thermodynamic Equation of State and Application to Hugoniot Predictions for Porous Materials [J]. J Appl Phys, 1996, 80: 4343. 谢鸿森. 地球深部物质科学导论 [M]. 北京: 科学出版社, 1997. 经福谦. 实验物态方程导引. 第2版 [M]. 北京: 科学出版社, 1999. Brown J M, McQueen R G. Phase Transition, Gruneisen Parameter, and Elasticity for Shocked Iron between 77GPa and 400 GPa [J]. J Geophys Res, 1986, 91(B7): 7485-7494.
点击查看大图
计量
- 文章访问数: 7885
- HTML全文浏览量: 432
- PDF下载量: 619