Basic hypoplastictiy |
φc |
Critical friction angle |
33.0 |
hs |
Granular hardness (kPa) |
2.5 × 106 |
n |
Stiffness exponent ruling pressure-sensitivity |
0.42 |
ed0 |
Limiting minimum void ratio at p = 0 kPa |
0.613 |
ec0 |
Limiting void ratio at p = 0 kPa |
1.01 |
ei0 |
Limiting maximum void ratio at p = 0 kPa |
1.21 |
α |
Exponent linking peak stress with critical stress |
0.13 |
β |
Stiffness exponent scaling barotropy factor |
0.8 |
Intergranular strain concept |
R |
Elastic range |
0.00004 |
mR |
Stiffness multiplier |
4.0 |
mT |
Stiffness multiplier after 90° change in strain path |
2.0 |
βR |
Control of rate of evolution of intergranular strain |
0.8 |
χ |
Control on interpolation between elastic and hypoplastic response |
0.5 |
ϑ |
Control on strain accumulation |
5.0 |