/ADMESH/STATE/SHELL
Block Format Keyword Describes the state of shells in adaptive meshing.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/ADMESH/STATE/SHELL | |||||||||
shell_ID | shell_ID1 | shell_ID2 | shell_ID3 | shell_ID4 | Actlev | IMapping |
Definition
Field | Contents | SI Unit Example |
---|---|---|
shell_ID | Shell
identifier (Integer) |
|
shell_ID1 | SW son identifier. 4 (Integer) |
|
shell_ID2 | SE son
identifier (Integer) |
|
shell_ID3 | NE son
identifier (Integer) |
|
shell_ID4 | NW son
identifier (Integer) |
|
Actlev | Actual level of shell.
6 (Integer) |
|
IMapping | Mapping flag or deletion
at the beginning of this stage. 8
(Integer) |
Comments
- This option is compulsory for multistage analysis in case of adaptive mesh. It allows to run a second stage after the first one using adaptivity, by retrieving the hierarchical data structure of the adaptive mesh.
- This block can be written with /STATE/DT option in Radioss Engine.
- The full hierarchical data structure of the adaptive mesh from level 0 to Levelmax (given in /ADMESH/GLOBAL) must be provided.
- Sons of
shell_ID must be given in the following order - assuming that
connectivity of shell_ID is (N1, N2, N3, and N4):
- Connectivity of the four
sons must be given in option /SHELL/part_ID in
the following order:
SW = (N1, .., .., ..) N1 is the first node of son SW and SW is orientated the same way as the parent shell_ID
SE = (.., N2, .., ..) N2 is the second node of son SE and SE is orientated the same way as the parent shell_ID
NE = (.., .., N3, ..) N3 is the third node of son NE and NE is orientated the same way as the parent shell_ID
NW = (.., .., .., N4) N4 is the fourth node of son NW and NW is orientated the same way as the parent shell_ID
- Actlev
is:
Actlev = level, the true level of the shell in the previous stage, if it was active (level goes from 0 to Levelmax value given in /ADMESH/GLOBAL).
Actlev = -(level+1), if the shell was not active in the previous stage.
- The full stress tensor, strain tensor are supposed to be provided for all active shells in the previous stage (Actlec ≥ 0), using /INISHE/STRS_F/GLOB or /INISH3/STRS_F/GLOB and /INISHE/STRA_F or /INISH3/STRA_F.
- The flag IMapping allows you to enforce the deletion of some shells or the activation of some shells at a deeper level than in the previous stage.
- In Adaptive Meshing, node ID and shell ID are limited to < 900000000.