DMIGNAME

I/O Options and Subcase Information Entry The DMIGNAME command can be used in the I/O Options section to define the name given to the reduced matrices written to an external data file.

Format

DMIGNAME = mtxname

Definitions

Argument Options Description
mtxname <up to 6 characters>

Default = AX

 The name given to the reduced matrices written to an external data file, when PARAM, EXTOUT is present in the Bulk Data section.

If PARAM, EXTOUT, DMIGPCH is used, the file outfile_mtxname.pch is created.

If PARAM, EXTOUT, DMIGBIN is used, the file outfile_mtxname.dmg is created.

Both files contain the matrices:
KAmtxname
Reduced stiffness matrix
MAmtxname
Reduced mass matrix
Pmtxname
Reduced loading matrix
Note: The reduced mass matrix is only output if an eigenvalue subcase is present in the input file and the reduced loading matrix is only output if a linear static subcase is present in the input file.

Comments

  1. When a DMIGNAME command is not present, AX is used for mtxname.
  2. Only one occurrence of DMIGNAME is permitted.
  3. DMIGNAME must appear before the first subcase.
  4. See Direct Matrix Input (Superelements) in the User Guide for more detailed usage information.