Define the isotropic or anisotropic elastic behavior via MP commands. Define the material data table (TB,DP) and define up to three constants (TBDATA), as follows:
DP -- Classic Drucker-Prager Plasticity Specifications
NTEMP:Not used.
NPTS:Not used.
TBOPT:Not used.
| Constant | Meaning | Property |
|---|---|---|
| C1 | Force/Area | Cohesion value |
| C2 | Angle (in degrees) | Internal friction |
| C3 | Angle (in degrees) | Dilatancy |
Temperature-dependent parameters are not allowed.
Example 5.1: Classic Drucker-Prager
MP,EX,1,5000
MP,NUXY,1,0.27
TB,DP,1
TBDATA,1,2.9,32,0 ! Cohesion = 2.9 (use consistent units),
! Angle of internal friction = 32 degrees,
! Dilatancy angle = 0 degrees