Table A1
SR4 material parameters for sand lithology.
| Property | Value | Units |
|---|---|---|
| Young modulus (E) | 75000 | Pa |
| Poisson ratio (υ) | 0.2 | |
| Grain density (ρs) | 2710 | kg/m3 |
| Reference porosity (φ) | 0.35 | |
| Reference tensile intercept (pt) | 20 | Pa |
| Reference pre-consolidation pressure (pc) | −3000 | Pa |
| Yield surface shape parameter (β) | 65 | ° |
| Yield surface shape exponent (n) | 0.95 | |
| Flow potential shape parameter (ψ) | 68.7 | ° |
| Flow potential surface shape exponent (m) | 0.77 | |
| Deviatoric plane shape parameter 1 (β0) | 0.6 | |
| Deviatoric plane shape parameter 2 (β1) | 2 × 10−4 | |
| Deviatoric plane shape exponent | 0.25 | |
| Hardening properties | (see hardening curve in Fig. A4) |