Rayleigh-Taylor instability in elastic-plastic materials

被引：34

作者：

Dimonte, G ^{[1
]}

Gore, R

Schneider, M

机构：

[1] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[2] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.80.1212

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Rayleigh-Taylor instability is investigated in a material with a shear modulus mu and yield stress sigma(0). Incompressible experiments are conducted with constant and impulsive acceleration histories g(t) using a fully characterized material. Two dimensional (2D) perturbations are found to be stabilized for wave number k > rho g/2 mu and initial amplitude h(0) < sigma(0)/rho g where rho is the density. The stability region is larger for 3D perturbations. Unstable modes are found to grow classically during the acceleration phase, but they can recover elastically while coasting. [S0031-9007(97)05230-7].

引用

页码：1212 / 1215

页数：4

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