Sag Mill Foundation STEADY STATE.std
The technical reference is pretty lean on the steady state analysis comment (that's being generous to the TR). Is it possible to have loads acting at difference forcing frequencies? My attempt is below but I get an error with respect to double joint loads. Also, is there any plan to clean up some of the typos in the tech ref on steady state, and possibly add some additional instructions on using the command. Finally, I'm also getting the absolute strangest graphs for steady state results that clearly don't line up.
PERFORM STEADY STATE ANALYSIS
BEGIN HARMONIC FORCE
FREQUENCY FLO 1 FHI 90 NPT 2 MODAL
HARMONIC FORCE DAMP 0.01
JOINT LOAD
5461 FX 5.35 FY 36 FZ 6.45
5462 FY 8.6 FZ 2.4
2878 FY 22.1 FZ 1.35
3286 FX 5.35 FY 22.1 FZ 2.75
AMPLITUDE X
0 0 65.5 0 65.52 1 80.69 1 80.7 1
AMPLITUDE Y
AMPLITUDE Z
5572 FY 10.4 FZ 10.41
5573 FY 9.1 FZ 9.1
0 0 3.59 0 3.6 1 4.43 1 4.44 0 7.9 0 7.92 1 9.75 1 9.76 0
PRINT HARMONIC DISPLACEMENT LIST 2878 3286 5461 5462 5572 5573
You can't have different loads at different forcing frequencies in Steady State. You can have as many loads at different points as you like, bu the forcing frequency range is the same for all. For different frequencies, you need to create separate STAAD files and combine the results node-wise using SRSS, etc.
Hello, one thing I'm trying to find is if it is possible to define in Staad a Steady State function (frequency vs Force), as in Sap2000. As far as I could understand, STAAD considers that this frequency vs Force relatioship is constant, that is, the applied forces in staad remain constant for all the frequencies defined in FLO and FHI range? . Thanks in advance for any answer.