This paper analyzes the cavitation and mushrooming phenomena occurring in a metal target during the high-speed penetration by a deforming rod. It is motivated by the fact that two mechanisms are involved in the formation of cavity by a deforming rod. First, the flow of the deformed rod products exerting radial stress on the target opens a cavity (mushrooming). Second, the radial inertia of the target as it flows around the head plays another part in the formation of the cavity (cavitation). By examining the dynamics of the flow of deformed rod products, the proposed model can estimate the extent of cavity growth due to the mushrooming effect. Predicted results for the final cavity growth are found to match well with the corresponding test values.
Cavitation and Mushrooming in Attack of Thick Targets by Deforming Rods
Contributed by the Applied Mechanics Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF APPLIED MECHANICS. Manuscript received by the ASME Applied Mechanics Division, Feb. 16, 1999; final revision, Nov. 27, 2000. Associate Editor: K. T. Ramesh. Discussion on the paper should be addressed to the Editor, Professor Lewis T. Wheeler, Department of Mechanical Engineering, University of Houston, Houston, TX 77204-4792, and will be accepted until four months after final publication of the paper itself in the ASME JOURNAL OF APPLIED MECHANICS.
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Lee, M. (November 27, 2000). "Cavitation and Mushrooming in Attack of Thick Targets by Deforming Rods ." ASME. J. Appl. Mech. May 2001; 68(3): 420–424. https://doi.org/10.1115/1.1360690
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