Dear all,
I have a model in which I have defined the "sin" type of time history with an operational frequency of 50Hz. In term of results, I can get both displacement-time and displacement-frequency curves which firstly mean the software has perfomed the steady state analyis too, is not it? Second, I have changed the defined frequency from 50 to 40 (where the other input such as amplitude is the same) and I have got different displacement in frquency of 40Hz in both simulation. I am wondering where this difference is coming from? It does not seem correct as during the analysis with 50Hz , software would normally pass from 40 and make its own "sin" fucntion ....
I would appreciate your technical clarification,
Regards
When you do a PERFORM ANALYSIS with time history loading, the results include the response from the transient phase as well. If you want the steady state results for multiple frequencies, you have to carry out a STEADY STATE ANALYSIS. It requires the STAAD.Pro Advanced license.