All,
Are there specific guidelines while using RBE2 vs RBE3 vs REMOTE FORCE to transfer loads? Or they are considered to be the same for different scenarios?
Thank you.
RBE2 VS RBE3 VS REMOTE FORCE
Accepted solution
Hi,
It is hard to see the difference with a cantilever beam because the difference at the end of the beam (where the load or connector is attached) is minor in the different analyses. A bar with a hole, with a load in the hole to produce tension, makes a good example to show the differences.
- A rigid connector (RBE2) adds rigid links to the model. This changes the stiffness of the model. Note how the hole remains circular due to the rigidity of the connector.
- A remote force converts the force at the remote point to equivalent loads applied to the surface. (I am not sure of the mathematics but assume that the sum of the forces and sum of the moments is maintained.) Because the load is ultimately applied to the model, no stiffness is added. Note how the shape of the hole changes.
- An interpolating rigid connector (RBE3) gives similar results to the remote force. No stiffness is added to the model, so the hole can change shape.
