Learning Forum

[keey6tyl]

Hi I have a confusion to be clarified. Is there a difference between displacement and remote displacement when assigned as supporting edges? Hereby I attached an archive with 2 similar system but one using remote displacement and another using displacement at the same edges. However the directional deformation result in Y-axis came out differently. Hope anyone can solve my confusion as I am very new to this software with very limited knowledge. Do point out my other flaws as well cause I am trying to model a flat slab plate and observe its behavior using this software. Thanks alot

Forum discussion.wbpz

[Erik Kostson]

See the documentation for displacement and remote displacement - in short the displacement is applied to the nodes on this edge (comes out as a D command in the ds.dat file), while the remote displacement does not have to be on an edge it can be a point outside the model. SO TheRemoteDisplacementboundary condition enables you to apply bothdisplacements and rotations (displacement can not apply rotations) at an arbitrary remote location in space.

All the best

Erik

[keey6tyl]

Thanks for resolving my confusion. However, this brings me to another question. Can I apply remote displacement instead of displacement while having the same boundary conditions? Because I am exploring if I can recreate a work by Chaudharri and Katti (2016) which looks like the diagram below:
where the supporting I beams were offset 100m from the side edges. I am exploring if I can obtain the same result without actually model a solid I beam below the flat plate but only applying boundary condition in Ansys mechanical. So currently my idea is to use remote displacement and set the location 100m from the 4 edges but the support does not work as I expected. Is this method not workable? Or do I need more modification on my work?

[Erik Kostson]

Hi

Just take away the steel beams you mention and use a Displacement boundary condition (not a remote displ.) on the slab (UX,UY,UZ). That is fine and that is typically OK, as seen in an example of punching shear (slide 9 in the link below, where the steel beams are just modeled as a displacement BC there) - use also this workflow below to model RC structure.

Closing this post as it has been answered - if you have any other question open up a new one.

[keey6tyl]

Thanks a lot for all the replies as well as a very much needed post that you have just shared. Wish you a great day ahead!

[Marianela Ripani]

Dears, could you share again the link of the example of punching shear? Thanks in advance