*FIELD MAPPER CONTROLS

Define controls for the mapper.

This option can be used only in conjunction with the EXTERNAL FIELD option. It is used to define additional mapping controls for the field mapper when importing a predefined field.

This page discusses:

See Also
*EXTERNAL FIELD
In Other Guides
Field Mapper
General Capability for Importing External Fields

Products Abaqus/Standard Abaqus/Explicit

Type Model data

LevelModel

Required parameters

NAME

Set this parameter equal to a label that is used to refer to the field mapper control definition. All field mapper control names in the same input file must be unique.

Optional parameters

CONFIGURATION

This parameter is relevant only when importing fields to define a distribution or an initial condition.

Set CONFIGURATION=DEFORMED to use the deformed configuration of the source mesh for mapping. This parameter setting is used when the model is remeshed in the second analysis using the deformed shape from the first analysis.

Set CONFIGURATION=REFERENCE (default) to use the original configuration of the source mesh for mapping.

MAPPER ALGORITHM

This parameter is relevant only when importing history-dependent fields when the mapper integrates to convert intensive fields to extensive fields.

Set MAPPER ALGORITHM=SUBELEMENT (default) to select an algorithm based on the subelements method. This algorithm provides conservative mapping with a smooth distribution.

Set MAPPER ALGORITHM=GLOBAL CONSERVATIVE to select an algorithm where the results are conservative over the entire region. This algorithm is numerically less expensive than the subelements method, and the mapped field might show an uneven distribution in some cases.

SEARCH TOLERANCE

Set SEARCH TOLERANCE=RELATIVE (default) to specify the search tolerances as relative values to characteristic region dimensions.

Set SEARCH TOLERANCE=ABSOLUTE to specify absolute search tolerances.

TENSOR AVERAGING

This parameter is relevant only for mapping three-dimensional tensor quantities.

Set TENSOR AVERAGING=COMPONENT to use component-by-component mapping. This value is the default except if output variable S, ORIENT, or ORITENS is specified as the source field on the EXTERNAL FIELD option.

Set TENSOR AVERAGING=EIGENVALUE to use a mapping technique that preserves the eigenvalues of the tensor during mapping. This value is the default if output variable ORITENS is specified as the source field on the EXTERNAL FIELD option.

Set TENSOR AVERAGING=INVARIANT to use a mapping technique that preserves the Mises invariant of the stress tensor during mapping. This value is the default if output variable S is specified as the source field on the EXTERNAL FIELD option.

If output variable ORIENT is specified as the source field on the EXTERNAL FIELD option, a special averaging technique to map orientations is used by default. Output variable ORIENT is available in the output database (.sim) file if material orientation is defined in the element section definition.

UNMAPPED MEMBERS TREATMENT

This parameter defines how to treat unmapped members (nodes or elements where the search algorithm fails to find intersections).

Set UNMAPPED MEMBERS TREATMENT=ERROR (default) to issue an error message and end the simulation if members cannot be mapped properly when importing history-dependent fields. When importing initial conditions and distributions, no values are applied. Unmapped members are reported as a node set or element set.

Set UNMAPPED MEMBERS TREATMENT=NEAREST NEIGHBOR to assign a field value based on the nearest neighbor.

Set UNMAPPED MEMBERS TREATMENT=CONSTANT VALUE to specify a constant value for the unmapped member.

Data lines to define mapping specifications

First line to specify searching tolerances

  1. Search position tolerance distance searched on the outward-normal side of a surface facet. For a relative search tolerance, specify a factor relative to the characteristic facet size (default is 0.5). For an absolute search tolerance, specify the search distance (default is 0.0).

  2. Search position tolerance distance for the cloud point mapping algorithm in the element face normal directions. For a relative search tolerance, specify a factor relative to the characteristic facet size (default is 0.5). For an absolute search tolerance, specify the search distance (default is 0.0).

  3. Search position tolerance distance searched outside the source elements or outside a facet in the plane of the surface. For a relative search tolerance, specify a factor relative to the characteristic facet size (default is 0.5). For an absolute search tolerance, specify the search distance (default is 0.0).

  4. Search tolerance radius for the nearest neighbor algorithm. For a relative search tolerance, specify a factor relative to the characteristic facet size (default is 0.5). For an absolute search tolerance, specify the search distance (default is 0.0).
Second line (optional, to be used to specify default values at unmapped member locations where search fails)

  1. Value assigned to the first component of the scalar, vector, or tensor field at an unmapped member location.

  2. Value assigned to the second component of the vector or tensor field at an unmapped member location.

  3. Value assigned to the third component of the vector or tensor field at an unmapped member location.

  4. Value assigned to the fourth component of the tensor field at an unmapped member location.

  5. Value assigned to the fifth component of the tensor field at an unmapped member location.

  6. Value assigned to the sixth component of the tensor field at an unmapped member location.