Learning Forum

[adib.aktab999]

 

You can see the choroid body is consisted to multiple bodies. I am trying to add NeoHookean property at choroid using APDL, I have previously denoted it as porous elastic using the engineering Data and now I try to apply NeoHookean using APDL script. When I add the script for one object it is not giving any error but when I used the APDL script for all the objects it shows error, "*** ERROR ***                           CP =       1.938   TIME= 12:21:40
 TB,HYPE,,,NEO has already been defined.  Please delete existing table  
 to overwrite."

My code is:

/prep7

tb,hyper,1,,,NEO

tbdata,1,1000,0.03

[adib.aktab999]

When I have used the NeoHookean from Engineering data it gives error,

""""*** ERROR ***                           CP =       8.312   TIME= 14:15:49
 More than one material option has been defined for material 13.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 14.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 15.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 16.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 17.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 18.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 19.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 20.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 21.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 22.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 23.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 24.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 25.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 26.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 27.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 28.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 29.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 30.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 31.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 32.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.422   TIME= 14:15:49
 More than one material option has been defined for material 33.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.438   TIME= 14:15:49
 More than one material option has been defined for material 34.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** ERROR ***                           CP =       8.438   TIME= 14:15:49
 More than one material option has been defined for material 35.        
 Hyperelastic material (TB,HYPER) is not supported with other nonlinear 
 material models.                                                       

 *** WARNING ***                         CP =       8.797   TIME= 14:15:49
 Material number 176 (used by element 207148) should normally have at   
 least one MP or one TB type command associated with it.  Output of     
 energy by material may not be available."""""""""                             

[peteroznewman]

Open the Ansys Help page for APDL command reference and look at the the TB command.

TB, Lab, MATID, NTEMP, NPTS, TBOPT, --, FuncName

The command you used keeps pointing to MATID = 1 but each solid in your model has its own MATID so only the first one works and all the others are overwriting that table which is what the error says. Try using MATID in place of 1 in your commands.  That will cause the command to use the individual MATID of each solid since the command is placed under the solid being defined. That is the reason for the error in your original post.

Note that when you use numbers in Commands that are only understood if you know what units are in use, they are interpreted using the currently set units, so if you have the wrong the units selected in Mechanical, you will get the wrong results.  Here is a link for more inforrmation about command snippets:

https://www.padtinc.com/wp-content/uploads/2022/03/PADT_Webinar_Code_Snippets_2011_05_26.pdf

The simplest solution is to delete all the command objects, define a Neohookean Material in Engineering Data and assign that material to each solid.  That is what you attempted for the second post, but now the error clearly states that Hyperelastic material (TB,HYPER) is not supported with other nonlinear material models, so you can't have both Porous Elasticity and Hyperelastic material models in the same material defintion. Note that Porous Elasticity requires you mesh with CPT215 elements, but your model has been meshed with SOLID187 elements.

[adib.aktab999]

How do I mesh with CPT215 material?

[peteroznewman]

This discussion will be most helpful: https://innovationspace.ansys.com/forum/forums/topic/pore-pressure-analysis-with-cpt215-elements-porous-elasticity-and-pm/