Rigid diaphram in modal analysis

[Anonymous]

Hey!

I am trying to do a modal analysis with the mass only considerd in the x- direction. I whis the walls to be fixed between the flors whitch are ridgid diaphrams. It seems okay until the top flor where there sems to be no conection between the diaphram and the wall. What can i do? i have used linear relese fixed for all the wall elements and deleted the fixed fuction for all the edges..

[Rafal.Gaweda]

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