Linearly Elastic Model
The Linear elastic model arises from Hooke's law and assumes a linear relationship between strain ε and stress σ. Upon unloading, being preceded by primary loading, the material returns to its initial undeformed state. Therefore, no permanent plastic strains are generated.
Graphical representation of the stress-strain law is evident from the following figure, where ε0 = αΔθ represents the initial strain caused in this particular case by the temperature change Δθ only.
Parameters defining the Linear elastic material model are presented in the following table.
Symbol | Units | Description | |
| [MPa] | Modulus of elasticity | |
| [-] | Poisson's ratio | |
| [kN/m3] | Bulk weight | |
| [-] | Initial void ratio corresponding to the state at the end of 1st calculation stage | |
| [1/K] | Coefficient of thermal expansion (when considering temperature effects) |
Further details can be found in the theoretical manual.