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