Molybdenum dynamic yield strength measured via the tamped Richtmyer-Meshkov instability method

ORAL

Abstract

The high pressure and high strain rate dynamic strength of Mo is experimentally and computationally investigated in the 3-16 GPa stress and 104-105 /s strain rate regime using the tamped Richtmyer-Meshkov instability method. Plate impact experiments are performed at Argonne National Laboratory’s Advanced Photon Source’s Dynamic Compression Sector (DCS), driving a planar shock front through a corrugated Mo-D2O or Mo-perfluorooctane (C8F18) interface, forcing the corrugation to invert and form a jet. The extent of the deformation (jet length, jet shape, etc.) is experimentally measured using X-ray phase contrast imaging at the DCS. Numerical simulations are performed using the Eulerian code CTH and calibrated against the experimental radiographs. Mo yield strength, Y, as a function of shock pressure, P, and strain rate, ε·, is determined for each impact experiment and presented.

*Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia LLC, a wholly owned subsidiary of Honeywell International Inc. for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.This publication is based upon work performed at the Dynamic Compression Sector, which is operated by Washington State University under the U.S. Department of Energy (DOE)/National Nuclear Security Administration award no. DE-NA0003957. This research used resources of the Advanced Photon Source, a DOE Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under contract no. DE-AC02-06CH11357.

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Presenters

  • Travis J Voorhees

    • Sandia National Laboratories

Authors

  • Travis J Voorhees

    • Sandia National Laboratories

  • Athena Padgiotis

    • Texas A&M University

  • Ben Zusmann

    • Georgia Institute of Technology

  • Shuyue Guo

    • Sandia National Laboratories

  • Vincent Garcia

    • Los Alamos National Laboratory

  • Tracy J Vogler

    • Sandia National Laboratories