Research Article
A New Strain-Softening Constitutive Model for Circular Opening considering Plastic Bearing Behavior and Its Engineering Application
Table 1
Geometrical and physical parameters of circular opening.
| | Parameters | Value |
| | Radius of opening, (m) | 0.1 | | In-situ stress, (MPa) | 15 | | Internal pressure, (MPa) | 0 | | Young’s modulus, (MPa) | 1500 | | Dilatancy coefficient, | 1.0 | | Poisson’s ratio, | 0.3 | | Strain softening coefficient, | 0.5 | | internal friction angle, (°) | 30 | | Peak compressive strength, (MPa) | 8 | | Residual compressive strength, (MPa) | 1 |
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