| ALGORITHM =
ClosestPoint ElementSizeSearchRadius ConsiderOndulation RVE Detection | See descriptions below. |
ClosestPoint is the most commonly-used option and accounts for most of the mapping scenarios targeted by the Envyo application. Beginning with the target mesh, the next element or integration point is identified and its data transferred to the target mesh.
The ElementSizeSearchRadius option considers a specific search radius, which helps to decide whether fiber orientations are accepted for mapping. If not, a ResinMatID is assigned, which you can define using the respective input command.
The ConsiderOndulation option considers the through-thickness position of the identified fiber orientation. This information is therefore not considered as provided by user input, but by the position in the source mesh related to the target mesh.
With RVE Detection, you can define specific criteria which allow the Envyo application to decide if a specific combination of fibers has been identified and therefore assigns a specific, user-defined material ID to the dedicated integration point.
For further information on these methods, see [2].
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MapStress = YES NO | Specify whether or not stresses should be transferred. |
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MapStrain = YES NO | Specify whether or not strains should be transferred. |
| NPLANE = INT |
1 - reduced integrated thick shell elements 4 - fully integrated thick shell elements |
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IntegrationRule = Gauss Lobatto | Define the through thickness integration rule for the mapping result. This option directly affects the positions of the through-thickness integration points on the target mesh. |
| NTHICK = INT | Define the number of through-thickness integration points. |
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TShell_Option =Composite Beta Composite Long | The active fiber orientation-specific output for thick shell elements. |
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Search_Radius = SrcEleLen TarEleLen DOUBLE | Defines the search radius for the mapping algorithm. By default, SrcEleLen is used, which sets the radius to the average element size of the source mesh. Alternatively, you can use TarEleLen to apply the average element size of the target mesh, or provide a positive DOUBLE value to define a custom radius. |
| Scale_SearchRadius = DOUBLE |
Coefficient to scale the search radius. The default value is 1.0. |
| SORT = BUCKET | Using bucket sort is strongly recommended, as it provides a substantial performance improvement for the search algorithm. |
| REPEAT = YES | Enable this option to ensure that all elements and integration points receive mapped data. When there is a significant difference in element sizes between the source and target meshes, the default bucket refinement may be insufficient to cover all points, sometimes by design. In such cases, this flag must be set to guarantee complete data coverage. |
The following additional mapping options are available for SHELL-TSHELL mapping:
| NumFibers = INT | Define the number of fibers to be transferred. |
| Fiber#ID = INT | Fiber ID to be transferred. This can be a specific number, as it can be defined, for example, with *MAT 249. |
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ThroughThicknessAveraging = YES NO |
Set to YES (recommended), if orientation averaging is to be performed through the thickness of the source parts, or if a specific stacking sequence is needed to define the fiber orientation. You should use this option in cases where orientations are being transformed and should therefore appear in a specific order, rather than using arbitrary orientations throughout the thickness. If the target material model is defined as *MAT 249, fiber averaging differs slightly. Refer to the respective explanations below. When set to YES, the NumberOfFiberBundles option (below) must be defined. |
| NumberOfFiberBundles = INT | Define how many averaging options must be performed. |
| FiberBundle#i: | Counter for fiber bundles. |
| MatID = INT | Material ID of the fiber bundle. |
| Lay = INT, IP = INT, Fib = INT |
Repeat this sequence of options as many times as necessary for each of the averaging possibilities: Lay refers to the Layer (using the same numbering as in SourcePID#i) of stacked elements in the source mesh. IP is the respective IP in that layer. Fib is the respective fiber. All values listed here are averaged until the next different input parameter is defined. |
| ResinMatID = INT | This option can be set for the ElementSizeSearchRadius, ConsiderOndulation, and RVE DETECT algorithms. It assigns a specific material ID to integration points where no neighbouring element could be found with which assign a fiber orientation. If no value is given, a default is used to assign a material ID for specific resinous areas. |