Research Article
A New Strain-Softening Constitutive Model for Circular Opening considering Plastic Bearing Behavior and Its Engineering Application
Table 3
Geometry and material mechanics parameters.
| Parameters | Value |
| Radius of opening, (m) | 1 | In situ stress, (MPa) | 1 | Young’s modulus, (MPa) | 5000 | Dilatancy angle, (°) | 0 or 30° | Poisson’s ratio, | 0.2 | Strain-softening coefficient, | 2.5 | internal friction angle, (°) | 35 | Initial cohesion, (MPa) | 0.276 | Residual cohesion, (MPa) | 0.055 | Shear stain increment, | 2.5e-5 |
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