Modeling of Uranium Alloy Response in Plane Impact and Reverse Ballistic Experiments

B. Herrmann, A. Landau, D. Shvarts, V. Favorsky, E. Zaretsky

Research output: Contribution to journalArticlepeer-review

Abstract

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 1-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.
Original languageEnglish
Pages (from-to)1306-1309
JournalAIP Conference Proceedings
Volume620
DOIs
StatePublished - 1 Jul 2002

Keywords

  • Ballistics
  • Dynamic Characteristics
  • Failure Analysis
  • Heat Treatment
  • Shock Waves
  • Uranium Alloys
  • Work Hardening
  • High-pressure and shock wave effects in solids and liquids
  • Metals semimetals and alloys
  • Deformation and plasticity

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