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Published June 1997 | public
Journal Article

Dynamically Induced Phase Transitions and the Modeling of Comminution in Brittle Solids

Abstract

Some experiments suggest the presence of a sharp interface between comminuted and uncomminuted regimes in a ceramic subject to impact by a penetrator. This in turn suggests that one might model the associated dynamical process with the help of recently developed continuum models of the macroscopic response of solids undergoing phase transitions. A highly idealized phase transition model of such a com- minuted process is analyzed here. The model accounts for the kinetics of the phase transition. If the shear wave speed in the comminuted material is small compared to that in the uncomminuted portion, it is found that the energy reaching the uncomminuted portion of the target is greatly reduced in comparison to its value in the absence of the phase transition.

Additional Information

© 1997 Sage Publications, Inc. Received 7 November 1996. This work was supported in part by the U.S. Army Research Office under Grant No. DAAH04-94-G-0063. We are grateful to Dr. Kailasam Iyer of that office for his interest in our work This article represents contribution No. 5743, Division of Geological and Planetary Sciences, California Institute of Technology.

Additional details

Created:
August 19, 2023
Modified:
October 18, 2023