I am trying to analyze a frame model with foundation at different level or height (i.e., foundations are on a slope) with 'Uniform Excitation Pattern'. Is it applying same ground motion to the foundation irrespective of their location or height (i.e., as same as frames on a plane ground or foundations are on the same height), or it works differently in case of foundation at a different height?
so, is there any way (other than Multi Support Excitation) I can only apply ground acceleration to the support of a 3D structural model just like in practical condition.
in actuality the motion is oming into the structure in a physical manner that the multi-support motion provides .. other than uniform or multi-support no (unless you want to define some set of your own nodal loads)
