MAPVAR
MAPVAR, Option, MatId, IstrtStress, nTenStress, IstrtStrain, nTenStrain,
, IstrtVect, nVect
Defines tensors and vectors in user-defined state variables
for rezoning and in 2D to 3D analyses.
OptionDEFINE
—
Define variables for the specified
MatIdmaterial ID (default).LIST
—
List the defined variables for the specified
MatIdmaterial ID.MatIdThe material ID for the state variables which you are defining (
Option= DEFINE) or listing (Option= LIST).When
Option= LIST, the default value for this argument is ALL (which lists all defined variables). WhenOption= DEFINE, you must explicitly specify a material ID.IstrtStressThe start position of stress-like tensors in the state variables. This value must be either a positive integer or 0 (meaning no stress-like tensors).
nTenStressThe number of stress-like tensors in the state variables. This value must be either a positive integer (or 0), and all stress-like tensors must be contiguous.
IstrtStrainThe start position of strain-like tensors in the state variables. This value must be either a positive integer or 0 (meaning no strain-like tensors).
nTenStrainThe number of strain-like tensors in the state variables. This value must be either a positive integer (or 0), and all strain-like tensors must be contiguous.
IstrtVectThe start position of vectors in the state variables. This value must be either a positive integer or 0 (meaning no vectors).
nVectThe number of vectors in the state variables. This value must be either a positive integer (or 0), and all vectors must be contiguous.
Notes
The MAPVAR command
identifies the tensors and vectors in user-defined state variables
(TB,STATE) for user-defined materials (TB,USER and UserMat or UserMatTh) or user-defined creep laws
(TB,CREEP,,,,100 and UserCreep).
To handle large-rotation effects and to correctly differentiate between tensor- and vector-mapping, specify the start position of specific state variables. For stress-like tensors, the shear components saved as state variables are the tensor component. For strain-like tensors, the shear components saved as state variables are twice the tensor components. Therefore, issue the MAPVAR command to define the stress-like and strain-like tensors individually. The command ensures that user-defined state variables are mapped correctly during rezoning and in 2D to 3D analyses.
In a rezoning operation, MAPVAR must be issued after remeshing (REMESH,FINISH) but before mapping (MAPSOLVE).