QRDOPT

QRDOPT, ReuseKey,--,--,SymMeth,CMCCoutKey
Specifies additional QRDAMP modal analysis options.

Valid Products: Pro | Premium | Enterprise | PrepPost | Solver | AS add-on

ReuseKey

Reuse 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.

SymMeth

Mode-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.

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.

Menu Paths

This command cannot be accessed from a menu.