Is there someone familiar how to group SAM displacements? I have same 9 support with different elevations. So I input all the interpolated SAM for each supports base on each elevation , case S1(OBE SAM) and S2(SSE SAM) and assigned group 1-9 (lowest to highest support) & I am defined same spectra for all 9 supports using MSRS method.When I look at the results it seem to me there is a bigger SAM displacements in a joint between the supports as well as the free end of the model which caused big support loads and as well as overstress.
↧