SAP2000, modal shapes - exclude shells/slabs
SAP2000, modal shapes - exclude shells/slabs
(OP)
I am wondering how to exclude modal shapes in area sections. I have a building and need a few modal shapes, but just for the concrete frame. In my case the 4th, 5th, ... shapes are all slabs in vertical displacement.
I tried assigning weight of their material to 0, but that did not solve the problem.
I tried assigning weight of their material to 0, but that did not solve the problem.





RE: SAP2000, modal shapes - exclude shells/slabs
Please check the following link:
https://wiki.csiamerica.com/display/kb/Ritz+vs.+Ei...
RE: SAP2000, modal shapes - exclude shells/slabs
RE: SAP2000, modal shapes - exclude shells/slabs
You could also select all area section and go to assign-->Areas---> Area stiffness modifiers and change mass modifier to 0, it will keep the weight for other load combinations.