Strength effects in an imploding cylinder with constant mass-to-explosive loading

ORAL

Abstract

High explosives were used to implode thin-walled metal cylinders of different strengths (6061-T0, 6061-T6, mild steel, and stainless steel) at a constant mass-to-explosive (M/C) ratio. The velocity history of the inner surface of the imploding cylinder was recorded via Photonic Doppler Velocimetry (PDV). The time histories and peak velocities were compared to imploding Gurney models and LS-DYNA hydrocode simulations. A model for the acceleration of the wall using a detonation pressure-based time constant gave good agreement with both the experiments and simulations. The deceleration caused by strength effects was modeled from high-strain rate theory and was used to predict the entire velocity history.

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Authors

  • Matthew Serge

    McGill University, McGill University, Mechanical Engineering Dept., 817 Sherbrooke St. W., Montreal, Quebec, H3A 2K6, Canada

  • Oren Petel

    McGill University

  • Jason Loiseau

    McGill University, McGill University, Mechanical Engineering Dept., 817 Sherbrooke St. W., Montreal, Quebec, H3A 2K6, Canada

  • Andrew Higgins

    McGill University, McGill University, Mechanical Engineering Dept., 817 Sherbrooke St. W., Montreal, Quebec, H3A 2K6, Canada, McGill University, Department of Mechanical Engineering, Montr\'eal, QC, H3A 0C3, Canada