Learning Forum

[shamik062]

 Hello everyone,

I might be asking a very basic question but I could not find the answer.

I want to find out the deflection of a Hollow and tapered Cantilever beam under several Point-Load along the axis at specified location. But I could not insert those points and loads. How can I insert the point loads in workbench? I have tried remote load and remote point but could not get the result. What is procedure? I have attached the files for ready reference.

Thanks in advance

[jj77]

A couple of things.

 

- Use beam elements not 3D elements for a beam especially since it is thin. In the worst case shell elements since.

You might need to do this in ansys apdl (an example is attached), because I am not sure tapered beams can be used in workbench

 

(

).

 

- For beams you need to have a vertex at the location of the point load so you need to have a vertex (or Key points/nodes in apdl) at the force locations. If shells then the shells need to be split there so you can use that edge (goes around the circumference) and apply a remote force there, either deformable or rigid choosing that edge. If you are using remote point then that point needs to belong to that edge again using either deformable or rigid behaviour. So the force will be applied on a point that belongs/connects to that edge and thus transfers the load to that location on the mesh/part (via multi constraint equations) 

 

[peteroznewman]

I didn't see jj77's post as it was Pending Review when I wrote the following reply...

Your beam is currently made up of thin solids of either 5 or 4 mm wall thicknesses.  This model would solve faster and have a simpler mesh if there was a surface body instead of a solid body, because you could use shell elements that had the thickness assigned as a property instead of the thin solid that requires multiple elements through the thickness. You can get a surface body by revolving a single line instead of a rectangular profile, but you have to set the details for As Thin to Yes and set the offset to 0.

When you say Point-Load, do you literally mean a Point (vertex) or do you mean a cross-section of the beam (a circle in the case of the sheet bodies) at some distance from the tip?  If you mean a cross-section, create a Plane at each distance and Slice (or Face Split) the body to create a new edge. Use a Remote Displacement if you want to apply a displacement load to that section. If you mean a vertex, then you also need a Plane through the length of the cantilever (presumably a vertical plane) and Slice the body again to create a vertex at the top and bottom of the new edge just created. You can then apply the load directly to the edge or vertex as desired.