/DEFAULT/INTER/TYPE24

Block Format Keyword Defines default values for all /INTER/TYPE24.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/DEFAULT/INTER/TYPE24
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    Istf     Irem_i2   Idel    
    Iedge      
    Igap0 Ipen0    
Required Fields
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
Blank
      Inacti      
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Definitions

Field Contents SI Unit Example
Istf Interface stiffness definition flag.
= 0
Set to 1000.
=2
Interface stiffness is the average of the main and secondary stiffness.
=3
Interface stiffness is the maximum of the main and secondary stiffness.
=4
Interface stiffness is the minimum of the main and secondary stiffness.
=5
Interface stiffness is the main and secondary stiffness in series.
6
Interface stiffness is the minimum of the main and secondary stiffness with special adjustment to improve convergence for implicit solution.
= 12
Nitsche method is used with the average of the main and secondary stiffness.
= 13
Nitsche method is used with the maximum of the main and secondary stiffness.
= 14
Nitsche method is used with the minimum of the main and secondary stiffness.
= 1000 (Default)
Interface stiffness is only based on the main side stiffness.

(Integer)

  
Irem_i2 Flag for deactivating the secondary node, if the same contact pair (nodes/segment) has been defined in interface TYPE2.
=0
Set to 1.
=1 (Default)
Secondary nodes in /INTER/TYPE2 tied contacts are removed from this contact.
=3
No change to secondary nodes.
  
Idel Node and segment deletion flag.
= 0
Set to 1000.
= 1
When all the elements (4-node shells, 3-node shells, solids) associated to one segment are deleted, the segment is removed from the main side of the interface. It is also removed in case of explicit deletion using Radioss Engine keyword /DEL in the Engine file.
Additionally, non-connected nodes are removed from the secondary side of the interface.
= 2
When a 4-node shell, a 3-node shell or a solid element is deleted, the corresponding segment is removed from the main side of the interface. It is also removed in case of explicit deletion using Radioss Engine keyword /DEL in the Engine file.
Additionally, non-connected nodes are removed from the secondary side of the interface.
= 1000 (Default)
No deletion.
Note: Using Idel results in higher CPU cost.
  
Iedge Edge definition flag.
= 0
Set to 1000.
= 1
Edge to edge contact is activated using the external border edges from surf_ID1 and surf_ID2 and sharp edges between contact segments.
= 1000 (Default)
No edge to edge contact.

(Integer)

 
Igap0 Gap modification flag for secondary shell nodes on the free edges.
= 0
Set to 1000.
= 1
Set gap to zero for the secondary shell nodes.
= 1000 (Default)
No change.

(Integer)

  
Ipen0 Initial penetration detection flag.
= 0
Set to 1000.
= 1
Including self-impact in each part.
= 1000 (Default)
Excluding self-impact in each part.

(Integer)

  
Inacti Initial penetration flag.
= 0
Set to 1000.
= -1
All initial penetrations are taken into account.
= 5
The main segment is shifted by the initial penetration value P 0 if P ≥ P 0 , then P ' = P − P 0 , where P 0 is the initial penetration.
= 1000 (Default)
Only tiny initial penetrations (1.0e-08) will be taken into account.

(Integer)