PLMC
PLMC, LSTEP, SBSTEP, TIMFRQ, KIMG, HIbeg, HIend
Plots the modal coordinates from a mode-superposition
solution.
LSTEP, SBSTEPPlot the solution identified as load step
LSTEPand substepSBSTEPTIMFRQAs an alternative to
LSTEPandSBSTEP, plot the solution at the time valueTIMFRQ(for ANTYPE,TRANS) or frequency valueTIMFRQ(for ANTYPE,HARMIC).LSTEPandSBSTEPshould be left blank.KIMGKey for plotting real or imaginary solution. Valid only for ANTYPE,HARMIC.
0 (or blank)
—
Plot the real solution (default).
1
—
Plot the imaginary solution.
2
—
Plot the amplitude.
HIbeg, HIendFor cyclic symmetry solutions, plot the solutions in the harmonic index solution range
HIbegtoHIend. Defaults to all harmonic indices (all modes).
Notes
PLMC plots a histogram of the modal coordinates (the factors which modes may be multiplied by to obtain their contribution to the response) at a certain time point (transient analyses) or frequency point (harmonic analyses). The absolute values of the modal coordinates are plotted. Use /XRANGE to plot only modes in a certain range, if desired.
For transient analyses, a .rdsp file must be available. For harmonic analyses, a .rfrq file must be available. The content of these files depends on the OUTRES command settings. Note that the default for mode-superposition transient analysis is to write the reduced displacement file every 4th substep. For more information, see Command Default in the OUTRES command description.
For a cyclic harmonic mode-superposition analysis, use the CYCFILES command to identify the .rfrq and modal .rst file. For other analyses, use the FILE command to specify the .rdsp or .rfrq file.
You may limit the plot to display only those modes in a certain harmonic index range. The modes having the same harmonic index are each plotted in a unique color. If there are less than 10 harmonic indices, they are identified in the graphics legend.
This is a graphical representation of the optional Jobname.mcf text file (see the TRNOPT and HROPT commands). To print the modal coordinates, use the PRMC command. For more information on modal coordinates, see Mode-Superposition Method in the Mechanical APDL Theory Reference.