Defines parameters associated with crack propagation using XFEM
An alphanumeric name assigned to identify the enrichment. The name can contain up to 32 characters and must begin with an alphabetic character. Alphabetic characters, numbers, and underscores are valid.
Name of the element set component for which initial cracks are defined and possibly propagated.
Material ID number referring to cohesive zone material behavior on the initial crack. If
0 or not specified, the initial crack is assumed to be free of cohesive zone behavior. Used
only with the phantom-node XFEM method (
PHAN -- Use phantom-node-based XFEM (default).
SING -- Use singularity-based XFEM.
Radius defining the region around the crack tip encompassing the set of elements to be influenced by the crack-tip singularity effects. Default = 0.0. Used only in singularity-based XFEM.
Snap tolerance to snap the crack tip to the closest crack face along the extension direction. Default = 1.0E-6. Used only in singularity-based XFEM.
MAT_ID is specified, the cohesive zone behavior is described by
the bilinear cohesive law.
If issuing multiple XFENRICH commands, the element components (
CompName) should not intersect (that is, the element components should not
have any common elements between them).
When multiple XFENRICH commands are issued in an
analysis, combining the phantom-node-based method (
Method = PHAN) and
the singularity-based method (
Method = SING) is not valid. Only one
XFEM method per analysis is allowed.
This command is valid in PREP7 (/PREP7) only.