Learning Forum

[Mattz1978]

I am trying to use remote force on a face. I am wondering to know what is the difference between coupled and rigid behavior.n

[Mattz1978]

What does it mean in the coupled behaviornCoupled:Allows the scoped geometry to have the same DOF solution on its underlying nodes as the remote point location.nnI really appreciate if someone can clarify it.n

[Rahul Kumbhar]

Rigid behavior defines the rigid link/area/region between the remote point and the selected face. The selected face will not deform that is shape of the face remains same. Coupled behavior depends upon the DOFs that are coupled. It assigns the same DOF value, as that of remote point. The major difference is if set of coupled nodes which are not coincident, or which are not along the line of the coupled displacement direction, may produce an applied moment which will not appear in the reaction forces. Thus there wont be any rotation of face if the remote point has only translation motion defined. Following two images shows the difference for the same type of bending load. For rigid behavior, the end face can be seen rotated but for coupled behaviour the end face is straight. I hope this helps.nn