Hello may you help me to know what is the cause of these difference in results as shown in the attached File and pic.
Is it the dummy beams introduced? which modification can be done to rectify this?
STAAD File
3326.Structure1.STD
Yes, this is happening due to dummy members. More specifically, because some dummy members are divided into segments, which are not connected to other reasonably stiff elements. You need to merge those segmented dummy members into a single length members as shown below:
Thank you Modestas,also what size of dummy member should be adopted?
The size does not really matter as the material is already with 0 density and low E value.
Iam attaching this model please help me to understand why these dummy beams have higher moment? and what should be done to lower their moment?
STAAD FILE
WING C ZNZ H.STD
Do you mean beam only1432 or some other beams as well? The moments are higher compared to what? What moment would you expect?
Yes beam 1432 but there some dummy beam also have higher moment,i have already know what causes that,i used to create these beams by highlighting nodes then i used a command of create beam along x and z,unfortunately some nodes were skipped instead of having beam segemented on each node,the beam was created from first node to last node bypassing the intermediate node.
When this beam is broken to segments resembling the slab node,the moment are very lower approximately 1.2knm.
I think this feature of creating beam has some problem