/DEFAULT/INTER/TYPE25

Block Format Keyword Defines default values for all /INTER/TYPE25.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/DEFAULT/INTER/TYPE25
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    Istf   Igap Irem_i2   Idel    
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    Igap0 Ishape    
Required Fields
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
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      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 master and slave stiffness.
3
Interface stiffness is the average of the master and slave stiffness.
4
Interface stiffness is the minimum of the master and slave stiffness.
5
Interface stiffness is the master and slave stiffness in series.
= 1000 (Default)
Interface stiffness is only based on the master side stiffness.

(Integer)

  
Igap Gap/element option flag.
=0
Set to 1
=1 (Default)
Variable gap varies according to the characteristics of the impacted master surface and the impacting slave node.
=2
Variable gap + deactivating slave nodes if element size < gap value, in case of self-impact contact similar to Irem_gap=2 for /INTER/TYPE7.
=3
Variable gap + size of the mesh is taken into account to avoid initial penetrations.

(Integer)

  
Ishape Flag defining the shape of the gap along free edges.
= 0
Set to 1.
= 1 (Default)
Square gap.
= 2
Round gap.
  
Irem_i2 Deactivating flag for the slave node, if the same contact pair (nodes) has been defined in interface TYPE2.
=0
Set to 1
=1 (Default)
Slave nodes in /INTER/TYPE2 tied contacts are removed from this contact.
=3
No change to slave nodes.
  
Idel
=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 master 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 slave 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 master 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 slave side of the interface.
= 1000 (Default)
No deletion.
  
Igap0 Gap modification flag for slave shell nodes on the free edges.
=0
Set to 1000
= 1
Set gap to zero for the slave shell nodes.
= 1000 (Default)
No change.

(Integer)

  
Inacti Initial penetration flag.
=0
Set to 1000
= -1
All initial penetrations are taken into account.
= 5
The master 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)