I am trying to model lateral float into a joint using RBE2-to CBUSH and Linear Gaps. The nodes are coincident. Do the CBUSH and the Linear GAP use the same 2 conincident nodes or does the Linear Gap require a intrmediate node? Can this be done?
I am trying to model lateral float into a joint using RBE2-to CBUSH and Linear Gaps. The nodes are coincident. Do the CBUSH and the Linear GAP use the same 2 conincident nodes or does the Linear Gap require a intrmediate node? Can this be done?
It all depends on what you want to model. Based on your description, I suspect that you would want them in series, in that way, the CBUSH would not be active until the linear gap closed. That is, if the gap is open, there is no load transferred, when it is closed, the CBUSH is active to transfer load.
If you put them in parallel (connected to the same GRIDs), the CBUSH will always be active (even when the linear gap is open).
Your suspicion is correct I have GAP and CBUSH in series however I think I need an RBE2 in there too top stop the linear gap acting as a mechanism. That hopefully will sort out my issue.
The question at this point is whether you model is stable with the gap(s) open or not. If it is not stable with it/them open, a small spring (or several small springs) may be required for statbility. If it is stable with the gap(s) open, then it shouldn't require any special modeling.
