asdeasoft.net

Dear STKO team,

I want to apply some forced displacement to an edge, but the direction is not along the global coordinates but along the local coordinates, what should I do? As shown in the following picture.

Similarly, if I don't want to apply a uniform displacement on this edge, but a displacement that varies with position, can I do that? The same is true for edge force loading.

Is there a convenient way to apply different node forces to multiple nodes simultaneously instead of defining them individually in condition?

Thanks!

Hi, All your requirements can be easily scripted into a Python API. You need to use PyMpc package from STKO to do that. Please refer the link provided below.
https://asdeasoft.net/stko-wiki/

The webinar given below explains how to use Python API in postprocessing, you can follow similar approach for pre-processing (including loading)
https://www.youtube.com/watch?v=TrHhvJ8L9ao

Additionally, you can write Python function directly into the displacement load option as shown in the attached figure.

SP are defined in global coordinates, so you can use the custom function to define the X and Y components as function of the x and y coordinates. In this example I'm applying x disp = -cos(alpha) and y disp = -sin(alpha)
Loads instead can also be defined in local coordinates.
If you look you can see the local axes of the edge: And you can easily define the load function in local coordinates: