PSI - Issue 40

I.A. Bannikova et al. / Procedia Structural Integrity 40 (2022) 32–39 I. A. Bannikova at al. / Structural Integrity Procedia 00 (2022) 000 – 000

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number of fragments is greater than some given

N

jump in the metastability area intensity of microshears

∆ p

p

critical value of the intensity of microshears

p t→tc

amplitude of the compression pulse on the velocity profile V Fs

P 0 P S

spall strength of condensed matter

inner radius of tube

r 2

time

t

time of the blow-up time of localization velocity of front wave

t c t s V

velocity free surface of condensed matter velocity of condensed matter initial velocity of condensed matter spatial coordinate in volume of condensed matter

V Fs

v

v 0

x

spatial coordinates

x l δ

parameter of structural-scaling

parameter of structural-scaling (bifurcation point), constant parameter of structural-scaling (bifurcation point), constant

δ * δ c

shear stress

σ ζ χ φ

dimensionless coordinate phenomenological parameter

function of time

amplitude

Φ 0 Г p

kinetic coefficient

coefficient of dynamic viscosity

η ρ

density of material relaxation time

τ

relaxation time of self-diffusion relaxation time in the Maxwell equation distance between the particles of condensed matter

τ D τ F ∆

shear strain strain rate

ε ε̇

strain rate at the front of rarefaction wave

ε̇ S ω ω F

frequency

frequency of the Frenkel

SW shock wave GMS Gapped Momentum States VISAR Velocity Interferometric System for Any Reflection EEW Electric Explosion of Wire SWF Shock Wave Front

2. Materials and experimental conditions The shock wave experiment was conducted to study the GMS relaxation properties in liquid subjected to high strain rate loading under the action of shock waves. The methods for investigation of material viscosity behind the Shock Wave Front (SWF) was first proposed by Sakharov et al. (1964) and then used by Barker (1968) with the