Some Preliminary Numerical Studies of Taylor Instability Which Include Effects of Material Strength

摘要

In this numerical study a two-dimensional Lagrangian code, TOODY II, is used to compute the growth of a perturbed interface between a perfect gas and an aluminum plate. The interface undergoes acceleration in the direction of the gas to the aluminum. Using an elastic perfectly plastic model for the aluminum the effects of yield strength, density ratio, wavelength, initial amplitude, and the elastic shear modulus on the perturbation growth rate are presented. Results are compared with Taylor theory and an attempt is made to develop an analytic expression for the effect of yield strength.