My model seems to display a different mode shape than it should be
as my colleagues told me the mode shape is supposed to be this way:
mode 1 drift to x
mode 2 drift to y
mode 3 twising
I attach my model please take a look and help me on this
Unfortunately I cant Upload my File
its 74 mb in size
regarding the mesh on floor slabs, i set it to rigid diaphram and it never meshed
please see photo
I cant seem to open the links on what you posted. maybe our it prohibited it.
anyway, can i send it on your email instead?? if its possible
about curtain wall setting on the floor slab, I already changed it to rigid diaphram with FEM meshing.
still it not genereting the mode that is desirable
See attached three modes
My Colleaugues told me that member stiffening maybe the cause of mode 1 to be twisting, but I doubt that because my model is prismatic and corewalls are placed on the same place as the other, much like a mirror image.
Can you please help me on how to do this right?
From My understanding, this is the forst step to do before going to an in depth seismic analysis as I need the natural period of the building