Table 2.

Material and operating parameters in Equations (21)–(46) and their values for 6061-T6 Al alloy at ambient conditions (taken from [22] unless specified otherwise).

Parameter	Value	Unit	Definition
ρ 0	2703	kg/m3	initial density
b	2.86 × 10−10	m	Burgers’ vector magnitude
a 1	0	m2/s2	elastic constant
a 1n	0	m2/s2	elastic constant
a 2	2.028 × 107	m2/s2	elastic constant
a 3	−2.044 × 107	m2/s2	elastic constant
a 4	−6.64 × 107	m2/s2	elastic constant
a 5	1.575 × 108	m2/s2	elastic constant
a 6	−1.428 × 108	m2/s2	elastic constant
c 1	0.168	m/s	fitting parameter
$T_1^{*}$	1.6	MPa	fitting parameter
M	1.78		inverse of the strain rate sensitivity
τ a0	120	MPa	initial back stress
γ 0	0.52		reference strain
n	1.55		hardening parameter
N m,HEL,w	8.18 × 1012	1/m2	initial mobile dislocation density in the cell wall
N m,HEL,b	8.00 × 1012	1/m2	initial mobile dislocation density in the cell block
α b	3.5 × 105	1/m	breeding coefficient
α t	0		trapping coefficient
N HEL,w	8.18 × 1012	1/m2	initial total dislocation density in the cell wall
N HEL,b	8.00 × 1012	1/m2	initial total dislocation density in the cell block
λ 1,HEL	0.995758		HEL longitudinal stretch
T 1,HEL	−475	MPa	HEL longitudinal Piola-Kirchhoff stress
C	5457.3146	m/s	shock wave speed at σ1,– = 2.1 GPa
	5600.2774		shock wave speed at σ1,– = 3.7 GPa
	6018.3672		shock wave speed at σ1,– = 9.0 GPa
u p,HEL	27.295879	m/s	HEL particle speed