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CDP model parameters under compound stress.
| Parameter | Value |
|---|---|
| Angle of dilatation | 37° |
| Eccentricity | 0.1 |
| The ratio of initial equibiaxial compressive yield stress to initial uniaxial compressive yield stress (fbo/fco) | 1.16 |
| The ratio of the second stress invariant on the tensile meridian (K) | 0.667 |
| Viscosity parameter | 0.0001 |
