SPOPT, Sptype, NMODE, Elcalc, modeReuseKey
Selects the spectrum type and other spectrum options.
SptypeSpectrum type:
SPRS | — | Single point excitation response spectrum (default). See also the SVTYP command. |
MPRS | — | Multiple point excitation response spectrum. |
DDAM | — | Dynamic design analysis method. |
PSD | — | Power spectral density. |
NMODEUse the first NMODE modes
from the modal analysis. Defaults to all extracted modes, as specified
by the MODOPT and BUCOPT commands. NMODE cannot be larger than 10000.
Elcalc Element results calculation key (for Sptype = PSD only):
NO | — | Do not calculate element results and reaction forces (default). |
YES | — | Calculate element results and reaction forces, as well as the nodal degree of freedom solution. |
modeReuseKeyKey for existing MODE file
reuse when running multiple spectrum analyses:
NO | — | No spectrum analysis has been performed yet (default). |
YES | — | This is not the first spectrum analysis.
The |
Valid only for a spectrum analysis (ANTYPE,SPECTR). This operation must be preceded by a modal solution (ANTYPE,MODAL) with the appropriate files available. Both the spectrum analysis and the preceding modal analysis must be performed under the same ANSYS version number.
If used in SOLUTION, this command is valid only within the first load step.
This command is also valid in PREP7.