QRDOPT
QRDOPT, ReuseKey,--,--,SymMeth,CMCCoutKey
Specifies additional QRDAMP modal analysis options.
ReuseKeyReuse key for method=
QRDAMPspecified in MODOPT command.ON
—
Reuse the symmetric eigensolution from the previous load steps or from the previous solution.
OFF
—
Do not reuse (calculates symmetric eigensolution at current load step). This is the default.
--,--Unused fields.
SymMethMode-extraction method to be used for the symmetric eigenvalue problem.
LANB
—
Block Lanczos algorithm (default).
SUBSP
—
Subspace algorithm.
SNODE
—
Supernode algorithm.
CMCCoutKeyComplex Modal Contribution Coefficients (CMCC) output key. See Calculate the Complex Mode Contribution Coefficients (CMCC) in the Structural Analysis Guide for details and usage.
ON
—
Output the CMCC to the text file Jobname.CMCC.
OFF
—
Do not output the CMCC. This is the default.
Notes
If the filename.modesym file exists in
the working directory and ReuseKey = ON, filename.modesym will be reused. If filename.modesym does not exist in the working directory, the symmetric eigensolution will be calculated.
When ReuseKey=ON, both the new modal
analysis (filename.modesym usage) and the preceding
modal analysis (filename.modesym generation)
must be performed using the same product version number.