5.2. Defining the Classic Drucker-Prager Plasticity Model

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
C1Force/AreaCohesion value
C2Angle (in degrees)Internal friction
C3Angle (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