| 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 average 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.
- = 1000 (Default)
- Interface stiffness is only based on the main side
stiffness.
(Integer) |
|
| Igap |
Gap/element option flag.
- = 0
- Set to 1
- = 1 (Default)
- Variable gap varies according to the characteristics
of the impacted main surface and the impacting
secondary node.
- = 2
- Variable gap + deactivating secondary 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 secondary node, if the same contact pair (nodes) 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 |
- = 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.
|
|
| Iedge |
Edge contact options.
Contact occurs between main and secondary edges which are
automatically extracted from surf_ID1 and surf_ID2. Sharp edges for external solid faces are defined using the
angle Edge_angle.
- = 0
- Set to the value defined in
/DEFAULT/INTER/TYPE25
- = 1
- The secondary and the main edges are the external
border edges of shell segments. There is no edge
contact for solid elements.
- = 11
- The secondary edges are the sharp edges of the
external solid segments and external border edges of
shell segments. The main edges are all edges from
external solid segments and external border edges of
shell segments.
- = 13
- The secondary edges are the sharp edges of the
external solid segments and external border edges of
shell segments. The main edges are all edges from
external solid segments and all shell segments.
- = 22
- The secondary and main edges are all edges from
external solid segments and all edges from shell
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) |
|
| 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
.
- If
, then
, where
is the initial
penetration.
- = 1000 (Default)
- Only tiny initial penetrations (1.0e-08) will be
taken into account.
(Integer) |
|
