Rigid link deflecion
Rigid link deflecion
(OP)
I am using a number of rigid links in a model. The links need a to be fixed at one and and fully released at the other. When I release one end and run the model they are deflection about 550 inches. Any tips here?





RE: Rigid link deflecion
RE: Rigid link deflecion
Maybe there are members that aren't quite connecting to each other if you zoom in tighter. Or, maybe there is a problem with your load path.
RE: Rigid link deflecion
Josh, I believe it is along those lines. Fixed-Fixed it looks good as well as if I fix some of the members that frame into the member supported by links. Not what I had expected to happen.
RE: Rigid link deflecion
Fixing the other end and having it work makes it seem like it's an overall stability issue.
RE: Rigid link deflecion
I cant upload the model because of some restrictions by the client. There was definitely a stability issue (it was a mechanism) but I thought it strange that the analysis finished without warnings. My way of getting it to work and still maintain the boundary conditions was to add a short and very flexible beam section at the end of each transverse framing members and and using a fixed connection rather than a pin. After wards I checked that the shear tab connection actually had a moment capacity sufficient to handle the moment in the short little segment at the end of the transverse beams.