REMESH

REMESH, Action, Filename, Ext, --, Opt1, Opt2
Specifies the starting and ending remeshing points, and other options, for rezoning.

SOLUTION: Rezoning

Action

START	—	Starts the remeshing operation.
FINISH	—	Ends the remeshing operation.
READ	—	Reads in a generic (.cdb format) new mesh file generated by a third-party application. This remeshing option applies to both 2D and 3D rezoning.
SPLIT	—	Splits selected elements of an existing 2D or 3D mesh such that a quadrilateral element is split into four quadrilaterals, a degenerate quadrilateral is split into three quadrilaterals, and a quadratic triangular element is split into four quadratic triangles. A tetrahedral element is split into eight tetrahedra.

Filename

Name of a .cdb generic mesh file. The default value is jobname. Valid only when Action = READ.

Ext

File name extension. The only valid (and the default) extension is CDB. Valid only when Action = READ.

--

Unused field.

Opt1

Specifies options for the new mesh when using a generic imported mesh file or the mesh-splitting remeshing method. Valid only when Action = READ or Action = SPLIT.

REGE	—	Regenerates all node and element numbers on the new mesh using an offset of the highest existing node and element numbers. This is the default behavior when `Action` = READ; otherwise, this value is ignored.
KEEP	—	Keeps the similarly numbered nodes and elements in the new and the old meshes unchanged. Valid only when `Action` = READ.
TRAN	—	Generates transition elements to ensure nodal compatibility between split and unsplit parts of the mesh. Valid only when `Action` = SPLIT for 2D analyses.

Opt2

Specifies transition options for the mesh when elements are split. These options are valid only when Action = SPLIT for 2D analyses.

QUAD	—	Minimizes the number of degenerate elements in the transition mesh and tries to maximize the number of quadrilateral transition elements across several layers of elements from the split regions. This is the default behavior.
DEGE	—	Creates transition zones between the split and unsplit parts of the mesh using mostly degenerate elements with a single element layer.

Notes

This command is valid only during the rezoning (REZONE) process.

In rezoning, REMESH,START exits the solution processor temporarily and enters a special mode of the PREP7 preprocessor, after which a limited number of preprocessing commands are available for mesh control, but no solution commands are valid.

REMESH,FINISH exits the remeshing process and reenters the solution processor, at which point no preprocessing commands are available. If the new mesh exists, the command creates contact elements if needed, and transfers all boundary conditions (BCs) and loads from the original mesh to the new mesh. You can issue any list or plot command to verify the created contact elements, transferred BCs, and loads. REMESH,FINISH is valid only after a previously issued REMESH,START, and is the only way to safely end the remeshing operation (and exit the special mode of PREP7).

REMESH,READ is valid only when you want to perform a rezoning operation using a generic new mesh generated by a third-party application (rather than a new mesh generated internally by Mechanical APDL). The command is valid between REMESH,START and REMESH,FINISH. In this case, the only valid file extension is .cdb (Ext = CDB). When Option = KEEP, Mechanical APDL assumes that the common node and element numbers between the old and the new mesh are topologically similar (that is, these commonly numbered areas have the same element connectivity and nodal coordinates).

REMESH,SPLIT is valid only when performing a rezoning operation via splitting the existing mesh. The command is valid between REMESH,START and REMESH,FINISH.

You can use REMESH,READ and REMESH,SPLIT for horizontal multiple rezoning provided that the meshes used in REMESH,READ do not intersect. (Avoid issuing AREMESH after issuing either of these commands.)

For more information about the remeshing options available during rezoning, see Rezoning in the Nonlinear Adaptivity Analysis Guide.

Distributed-Memory Parallel (DMP) Restriction — This command is not supported in a DMP solution.

Menu Paths

Main Menu>Solution>Manual Rezoning>Cancel

Main Menu>Solution>Manual Rezoning>Finish

Main Menu>Solution>Manual Rezoning>Read Mesh

Main Menu>Solution>Manual Rezoning>Select and Split Elems

Main Menu>Solution>Manual Rezoning>Start