How to define correct load position

This article is also available in:
When modeling hinged connections, it is necessary to change the position of the acting load into the place where the hinge is assumed (where the zero bending moment is).

In the first example, there is the default option chosen for this kind of connection - Forces in Node.

Due to the acting bending moment at the position of the supposed hinge, the calculated deformation is unreal and the behavior of the model is wrong.

In such cases, the position of the shear force has to be moved from the node into the Bolts (or to the specific Position).

Now, the bending moment is zero at the position of the theoretical hinge and, therefore, the deformation behavior is realistic and the model is correct.

Correct load position

Note: For some operations, especially when creating a connection as an assembly of more basic operations (e.g. stiffening plate, cut, bolt grid), the fuction Forces in Bolts doesnt have the effect and there is no shift of the zero bending moment into the theoretical hinge.

Therefore, the method Forces in Possition has to chosen and the appropriate distance X has to be inputed.

Related articles

Bolts positioning in end plate operation

Shifted position of internal forces

Several ways of defining the position of the plate

Bolts are too close to plate edge