Modeling of uranium alloy response in plane impact and reverse ballistic experiments

被引：0
|
作者：
Herrmann, B [1 ]
Landau, A [1 ]
Shvarts, D [1 ]
Favorsky, V [1 ]
Zaretsky, E [1 ]
机构：
[1] Nucl Res Ctr Negev, IL-84106 Beer Sheva, Israel
来源：
SHOCK COMPRESSION OF CONDENSED MATTER-2001, PTS 1 AND 2, PROCEEDINGS | 2002年 / 620卷
关键词：
D O I：
暂无
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The dynamic behavior of a solution heat-treated, water-quenched and aged U-0.75wt%Ti alloy was studied in planar (disk-on-disk) and reverse ballistic (disk-on-rod) impact experiments performed with a 25 mm light-gas gun. The impact velocity ranged from 100 to 500 m/sec. The impacted samples were softly recovered for further metallographic examination. The VISAR records of the sample free surface velocity, obtained in planar impact experiments, were simulated with I-D hydrocode for calibrating the parameters of modified Steinberg-Cochran-Guinan (SCG) constitutive equation of the alloy. The same SCG equation was employed in 2-D AUTODYN simulation of the alloy response in the reverse ballistic experiments, with VISAR monitoring of the lateral sample surface velocity. Varying the parameters of the strain-dependent failure model allows relating the features of the recorded velocity profiles with the results of the examination of the damaged samples.
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页码：1306 / 1309
页数：4
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