Material Behavior
An overview of the properties of the nonlinear elastic soil material model can be found in the corresponding chapter of Theoretical Foundations.
Input Dialog Box
The following input parameters are required for the nonlinear elastic model.
- φ – Friction angle
- c – Cohesion
- Eoed,ref – reference value of oedometric tangent modulus
- pref – reference stress
- m – power for stress dependency
These parameters are defined in the specific input tab shown in the image below.
Additional Notes
Cohesion
When using numerical methods, such as FEM, in geotechnical engineering, it is recommended to always apply a non-zero cohesion. Therefore, a small cohesion between 0.5 and 1.0 kN/m² can be applied even for non-cohesive soils.
Power for Stress Dependency
The usual value for sand is m = 0.5, and for clay m = 1.0.