Learning Forum

[Paula Alonso]

Hi! I´m trying to create a keypoint and apply a force in it but the result it's just zero. I believe that either the keypoint hasn't been created or the command force doesn't apply forces to keypoints.

 

I leave my code here so anyone can help me out. Thanks!

k,KP1,0,0.3,0
F,KP1,FX,10

 

 

[Michael Thompson]

Key Points in APDL are not Nodes.  They are the geometrical equivalent of a node, but they are just a point and do nothing related to the FEA analysis.  You cannot apply a force to them.  You should create a node and apply the force to the node.  You will need to also attach the node to some element(s) for the force to have any meaningful use.

[Paula Alonso]

Thanks!

And if I have to compare distances between  points, can I use in that case keypoints? The program I'm trying to do is compare the distances of some nodes and a reference point (outside the mesh) and the one that it's closer to it apply the force in that node.

 

Thanks again!