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appendices:a17
Appendix 17: Adaptive remeshing
The adaptive remeshing works currently for incremental forming process with COQJ4 elements and foundation tool. This remeshing method is a refinement without transition which moves along with the tool. The coarse elements, close to the tool, are divided into a fixed number of small new elements. Some new nodes can become inconsistent with the
neighboring coarse elements. Their degrees of freedom are managed by the master-slave method.
The method requires a NTADI file (NAME.ARI). The reading of this input file is activated by the loading file with the IADREM parameter (1srt line, 50th column).
If IADREM = 1 the NTADI file is read and the adapted remeshing is performed; = 0 Nothing is done.
The format of the NTADI is:
| Remeshing parameters (I5,2G10.0) | |
|---|---|
| NB_N | Number of new nodes on each edge on the coarse elements |
| ALFA | Neighboring coefficient |
| DMAX | Distortion limit |
| Printing option (4I5) | |
| If the value is equal to 1, the printing is performed otherwise it is not performed. The printing are saved on the file ‘NAME.ARE’. The printings are performed at each modification on mesh. |
|
| IOPT_PRI_REM(1) | New nodes |
| IOPT_PRI_REM(2) | New elements |
| IOPT_PRI_REM(3) | New table of degree of freedom |
| IOPT_PRI_REM(4) | Stiffness matrix resolution information |
| Renumbering parameters (I5/2I5) | |
| METH_RENUM | Renumbering method |
| = 1 oil stain method | |
| = 2 directional method | |
| → oil stain method | |
| INOD_INIT | Initial node for renumbering |
| IBLOC | = 0 The initial node is modified during the simulation |
| = 1 The initial node is constant during the simulation | |
| → directional method | |
| IDIR_ORDER | Tens: Direction in which the structure has the greatest number of nodes (1=X, 2=Y, 3=Z) Unity: Direction in which the structure has the smallest number of nodes |
appendices/a17.txt · Last modified: 2020/08/25 15:46 (external edit)
