Druker-Prager Model

- February 23, 2020 at 4:02 pm
  
  b0274
  Subscriber
  
  Hi!
  
  I´m modeling a masonry wall with Solid65.
  
  Mi first model I used I used Drucker-Prager with
  
  TB,DP,1,,,
  
  Now in ansys help i found this
  
  TB,CONCR,1,,,DP
  
  and
  
  TB,CONCR,1,,,DILA
  
  Some boy knows what is the difference between use TB,DP and TB,CONCR,,,,DP?
  
  When I use TB,CONCRE,,,,DP the model elements has become highly distorted.
  
  I appreciate any help
- February 23, 2020 at 4:58 pm
  peteroznewman
  Subscriber
  The concrete material is defined using a modified Drucker-Prager material model (TB,CONCR,,,,DP) or a Menetrey-Willam material model (TB,CONCR,,,,MW).
  
  Exponential softening (TB,CONCR,,,,HSD2) is used with either concrete material model.
  
  When using the composite Drucker-Prager with Drucker-Prager tension surface, dilatancy parameters are optional. The composite Drucker-Prager with Rankine surface requires a compression dilatancy parameter.
  
  If you define dilatancy parameters, the following considerations apply:
  - You must also define the hardening, softening, and (where applicable) dilatation (HSD) behavior.
  - You cannot define failure joints, as they are valid only in the perfectly plastic base Drucker-Prager concrete model with associated flow (TB,CONCR,,,,DP).
  To define dilatancy parameters, define the material data table (TB,CONCR,,,,DILA) and input the following constants (TBDATA):