4 point bending.

[Anonymous]

I am trying to run a 4 points bending simulation on a concrete beam but i can't create the 2 support points on the bottom side. Is there an option that i could use or a tutorial that explains the process?

[PipePakPat]

I will need more information to better understand  your question.  Perhaps if you provided an image using Mspaint.exe and indicate where you would like to apply your boundary conditions, then explain what you have attempted to do, and why you are not able to accomplish your goal.

I suspect, you may be working with CAD imported model, such that the surfaces of the model do not provide the ability to select specific regions along a continuous surface and add boundary conditions.  In this case, one would select by vertex, then view the model from the side view.  One can then use a rectangular selection method to collect a line of vertices at the support region of interest, then right-click and choose to add Nodal Boundary Conditions to these selected vertices.

If you preferred a more exacting method, the you may need to add a geometric feature to the original CAD model in the location of the intended boundary conditions so that this "surface" or "Edge" can be selected from within the Simulation interface.