Armstrong - Zerilli

Combined fcc and bcc with DERA mods.

type name

armstrong-zerilli

functional form

Flow stress y = (y0 + c5 * eⁿ) * (mu1 - mu2 * T) + (c1 + c2 * sqrt(e)) * exp(-c3 * tt + c4 * T * log(edot)) + k * 1/sqrt(L)

parameters

mu	shear modulus
y0	initial flow stress
c1-4	rate-dependent term
c5,n	work-hardening term
mu1-2	thermal dependence of shear modulus
k,L	grain size (L is characteristic size)
eps	strain rate below which rate-dependence is neglected
eta	viscosity