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/DT/Eltyp/Iflag |
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/DT/Eltyp/Iflag |
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/DT/Eltyp/Iflag |
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/DT/Eltyp/Iflag |
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/DT - Time Step for Select Entities
Description
Time step for select entities.
/DT/Eltyp/Iflag
grnd_ID
Data |
Description |
Eltyp |
Entity selection: BRICK - Brick elements |
QUAD - Quad elements |
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SHELL - Shell elements |
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SH_3N - Triangular shell elements |
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TRUSS - Truss elements |
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BEAM - Beam elements |
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SPRING - Spring elements |
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AIRBAG - Airbag |
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FVMBAG - Finite Volume Method airbag for monitored volumes type /FVMBAG or /FVMBAG1 only. The /DT/FVMBAG means that if dt<dtmin and volume < 10 * the minimum volume used for global merge the finite volume is merged. This is the strategy used in version 12.0.223. /DT/FVMBAG/1 means that if dt<dtmin the finite volume is merged. |
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INTER - Interface (Type 7 only). Only concerns interface type 7 time step. |
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NODA - Nodes - activates nodal time step computation. With this option, the computation of each cycle is slightly more expensive, but the time step can be higher, mainly for non-optimized meshes. |
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Iflag |
Node group flag (Comment 1) |
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Scale factor on time step for the option defined by “Eltyp”. |
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Minimum time step for the option defined by “Eltyp” (Comment 2) |
grnd_ID |
Node group identifier. Read only if Eltyp is NODA and Iflag =1 |
| 1. | The “Iflag” can be only used with Eltyp = NODA. |
| • | If Iflag =1, only the nodes belonging the node group grnd_ID are affected. |
| • | If Iflag =0, all nodes are affected. |
| 2. | If Eltyp is BEAM, TRUSS, SPRING, NODA or INTER, the value of  has no effect. |
See Also:
and 
can be defined to insure stability and a minimum time step size by triggering additional finite volume merges when the FVMBAG entity penalizes the computation.
