Line Joint Assignment with Variables

API & Interfaces
, , ,
1

Hello,

I want to define a line hinge that is assigned to multiple lines of a surface. The respective surfaces and lines should be selectable with variables.

A "static" input works well with the following code:
Line hinge no. 1
Surface no. 10
Lines no. 33, 34

        rfem_app.create_object(
             rfem.types_for_lines.LineHinge(
             no=1,
             assigned_to="10/33, 34",
             translational_release_u_x=inf,
             translational_release_u_y=inf,
             )
        )

Depending on the input parameters, there are different lines on a surface that I want to assign a line hinge to. How can an input with variables be done?
The "assigned_to" requires a string input, but I can't manage to create a valid usable string.
I have tried, among other things, the following:

        # Variable definition:
        surface = 10
        line = str([32, 33])[1:-1]
        # Combined
        surface_lines = f'\"{surface}/{line}\"'

Then used in the line hinge code:

        assigned_to=surface_lines

A definition as a string also does not work.

        assigned_to=str(surface_lines)

Is there a possibility?

I am working in RFEM 6.13.0001 and dlubal.api 2.13.1 on Windows

Thanks and best regards
Bert

3

Hello @bert.p,

The line

Fläche_Linien = f'\"{Fläche}/{Linie}\"'

returns the following string: “10/32, 33”.

However, Assigned to must be of the type 10/32, 33. So the quotation marks are too much, since the formatting command f’[...]’ already produces a string. Please try it like this:

Fläche_Linien = f"{Fläche}/{Linie}"

Best regards
Fabian

1 Like
4

Hello,
that works, thank you very much.
Best regards!

1 Like