QRDOPT, ReuseKey,--,--,SymMeth,CMCCoutKey
Specifies additional QRDAMP modal analysis options.
ReuseKeyReuse key for method=QRDAMP specified 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. |
CMCCoutKey Complex 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. |
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.