Rayleigh–Taylor stability criteria for elastic-plastic solid plates and shells
- 1 July 1997
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 82 (1), 163-170
- https://doi.org/10.1063/1.365795
Abstract
The Rayleigh–Taylor (R-T) instability theory is usually applied to the acceleration of one fluid by a lower density one, but also becomes applicable to a solid accelerated by a fluid at very high pressure. Approximate analytic R-T stability criteria are derived for both finite and infinitesimal perturbations of the driven surface of an incompressible solid plate of a given thickness, shear modulus, and von Mises yield stress uniformly accelerated by a massless fluid. The Prandtl-Reuss equations of elastic-plastic flow are assumed for the solid. A single degree of freedom, amplitude , is assumed for the spatial dependence of the perturbation, which is approximated to be that of the semi-infinite half-plane ideal fluid linear R-T eigenfunction. The temporal dependence of , however, is determined self-consistently from global energy balance, following a previously published model. The (significant) effect of the unperturbed solid’s stress tensor is included and related to the converging/diverging geometries of imploding/exploding cylindrical and spherical solid shells for which the model may be applied locally. Correlations with Phillips Laboratory’s quasispherical electromagetic implosions of solid shells are presented.
Keywords
This publication has 8 references indexed in Scilit:
- Multimegajoule Electromagnetic Implosion of Shaped Solid-Density LinersFusion Technology, 1995
- Electromagnetic Implosion of Spherical LinerPhysical Review Letters, 1995
- Acceleration instability in elastic-plastic solids. I. Numerical simulations of plate accelerationJournal of Applied Physics, 1989
- Acceleration instability in elastic-plastic solids. II. Analytical techniquesJournal of Applied Physics, 1989
- A model for the saturation of the hydromagnetic Rayleigh–Taylor instabilityJournal of Applied Physics, 1984
- Further experimentation on Taylor instability in solidsJournal of Applied Physics, 1980
- A constitutive model for metals applicable at high-strain rateJournal of Applied Physics, 1980
- Taylor instability in solidsJournal of Applied Physics, 1974