## General Mechanical

#### Variable distributed force on cantilever composite beam

• Pascal Berube
Subscriber

So I have this cantilever beam that is a corecell sandwich composite struture

And I want to apply a vertical force that change along the Z axis in a parabolic fashion like this (don't mind the supports), on the top surface

There's chockingly very little documentation on how I could achive something so trivial in ANSYS Mechanical. I'm willing to use APDL (or the command snippet) but have no idea how to use my ACP model (since it's composite) in the APDL.

• Nanda Veralla
Ansys Employee

Hello Pascal,

You can apply a spatial varying load by either using Tabular or Function inputs in the details view. Please look at this link for more details. There are multiple forum discussions already on this topic, let me know if this doesn't help.

Spatial Varying Loads and Displacements (ansys.com)

Regards,

Nanda.

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• Pascal Berube
Subscriber

You can apply spatial varying "pressure" not force? Which also have to be normal to the surface. I don't have the distribution for the pressure and the face on which I wish to apply the load isn't normal to any axis (or plane at all for that mather).

As for the link you shared, I cannot acces it. I have to complete a form and when I'm done it tells me that I have a student credential and to read a message on the link but the link cycle back to the same page, so that's a bummer

• Nanda Veralla
Ansys Employee

Hello Pascal,

We could do this by creating a named selection, then insert (Right Mouse Button click on the new name selection and choose create nodal named selection) a node named selection, and that can be used by a nodal force that is a function say of distance. Not very easy, but it seems to be doable at least. Also, I came across some APDL commands when searched online, but I never used it. Perhaps someone expert in APDL can better answer this.

Here’s how you can access the Ansys Online Help from within the Ansys Student products:

1. Open Ansys Workbench (or any other Ansys product) and go to Help > Ansys Workbench Help. A browser window will open.
2. Copy the link to the Ansys Online Help from the post on the Ansys Learning Forum.
3. Paste the link into the address bar of the browser window opened in step 1, and you’ll be able to access the desired page.

Regards,

Nanda.

• Lily Smith
Subscriber

We might create a named selection, insert a node named selection (Right Mouse Button click on the new name selection and choose generate nodal named selection) backrooms game, and apply a nodal force that is a function of distance. Not easy, but achievable. I found APDL commands online but never used them. APDL experts might know.

• Pascal Berube
Subscriber

The nodal force on the nodal named selection did the trick but for for some reason I had to multiply every force by the length of the beam to get the expected results.

Thanks you very much for the help

• clamb time
Subscriber

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