/ADMESH/STATE/SH3N
Block Format Keyword Describes the state of 3-node shells in a multi-stage analysis using adaptive meshing.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/ADMESH/STATE/SH3N | |||||||||
sh3n_ID | sh3n_ID1 | sh3n_ID2 | sh3n_ID3 | sh3n_ID4 | Actlev | IMapping |
Definition
Field | Contents | SI Unit Example |
---|---|---|
sh3n_ID | 3-Node shell
identifier (Integer) |
|
sh3n_ID1 | First son identifier 4 (Integer) |
|
sh3n_ID2 | Second son
identifier (Integer) |
|
sh3n_ID3 | Third son
identifier (Integer) |
|
sh3n_ID4 | Fourth son
identifier (Integer) |
|
Actlev | Actual level of 3-node
shell sh3n_ID. 6 (Integer) |
|
IMapping | Mapping flag or deletion
at the beginning of this stage, 8
(Integer) |
Comments
- This keyword is compulsory for multi-stage analysis in case of adaptive mesh. It allows running 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 3-node
sh3n_ID must be given in the following order - assuming that
connectivity of 3-node sh3n_ID is (N1, N2, and N3):
- Connectivity of the four
sons must be given in option /SH3N/part_ID in
the following order:
First son = (N1, a , c) N1 is the first node of first son and first son is orientated the same way as the parent sh3n_ID
Second son = (a, N2, b) N2 is the second node of second son and second son is orientated the same way as the parent sh3n_ID
Third son = (c, b, N3) N3 is the third node of third son and third son is orientated the same way as the parent sh3n_ID
Fourth son = (b, c, a)
- Actlev
is:
Actlev = level, the true level of the 3-node 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 3-node shell was not active in the previous stage.
- The full stress tensor, strain tensor are supposed to be provided for all active 3-node 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 3-node shells or activation of some 3-node shells at a deeper level than in the previous stage.
- In Adaptive Meshing, Node ID and shell ID are limited to < 900000000.