Block Format Keyword
/ADMESH/STATE/SH3N - Adaptive Meshing – State of 3-Node Shells in Adaptive Meshing
Description
Describes the state of 3-node shells in a multi-stage analysis using adaptive meshing.
Format
(1)
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(2)
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(3)
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(4)
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(5)
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(6)
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(7)
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(8)
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(9)
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(10)
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/ADMESH/STATE/SH3N
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sh3n_ID
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sh3n_ID1
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sh3n_ID2
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sh3n_ID3
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sh3n_ID4
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Actlev
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IMapping
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Field
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Contents
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sh3n_ID
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3-Node shell identifier
(Integer)
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sh3n_ID1
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First son identifier (Comment 4)
(Integer)
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sh3n_ID2
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Second son identifier
(Integer)
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sh3n_ID3
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Third son identifier
(Integer)
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sh3n_ID4
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Fourth son identifier
(Integer)
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Actlev
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Actual level of 3-node shell sh3n_ID (Comment 6)
(Integer)
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IMapping
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Mapping flag or deletion at the beginning of this stage (Comment 8)
(Integer)
= -1: the 3-node shell and all the shells coming from it are deleted.
= 0: the element is not deleted and no element is activated at a deeper level, unless it was already active in the previous stage. Necessarily, the element remains active (resp. inactive) if it was active (resp. inactive) in the previous stage.
= 1: some 3-node shells will be activated at a deeper level, but were not previously. Then fields mapping (stresses, etc.) will occur at the beginning of this stage for activating this deeper level.
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| 1. | 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. |
| 2. | This block can be written with /STATE/DT option in RADIOSS Engine. |
| 3. | The full hierarchical data structure of the adaptive mesh from level 0 to Levelmax (given in /ADMESH/GLOBAL) must be provided. |
| 4. | 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): |
| 5. | 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 = 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.
| 7. | The full stress tensor, strain tensor are supposed to be provided for all active 3-node shells in the previous stage (Actlec > 0), using /INISH3/STRS_F and /INISH3/STRA_F. |
| 8. | 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. |
| 9. | In Adaptive Meshing, Node ID and shell ID are limited to < 900000000. |
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See Also:
Implicit Features and Compatibility Information
