Dynamic Spherical Cavity Expansion of Strain-Hardening Materials

[+] Author and Article Information
V. K. Luk, M. J. Forrestal, D. E. Amos

Sandia National Laboratories, Albuquerque, NM 87185

J. Appl. Mech 58(1), 1-6 (Mar 01, 1991) (6 pages) doi:10.1115/1.2897150 History: Received February 03, 1989; Revised January 19, 1990; Online March 31, 2008


We developed models for the dynamic expansion of spherical cavities from zero initial radii for elastic-plastic, rate-independent materials with power-law strain hardening. The models considered the material as incompressible and compressible. For an incompressible material, we obtained closed-form solutions, whereas the compressible results required the numerical solution of differential equations. A comparison of the numerical results from both models showed the effect of compressibility.

Copyright © 1991 by The American Society of Mechanical Engineers
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