Divide a line with varying distribution line load

Product Support
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1

Hello :waving_hand:

I encountered unexpected program behavior when dividing a line to which a line load with a Varying distribution type is applied.
When dividing such a line using the Connect ... function, the variable load is not “distributed” onto the new lines according to its actual distribution; instead the exact original load is applied to all resulting lines.

This seems non-intuitive (and also very problematic), so I checked the behavior when using the Divide Line tool. This gives a different and expected result.

I also checked RFEM 5, and there it produces the expected result in both approaches.

The above seems like a bug in RFEM 6 (and, to be honest, a step backward compared to RFEM 5).

Can someone confirm that this is not intended behavior in RFEM 6 and that it should be fixed?

4

Hi r.sajdak,

Thanks for bringing this up! :blush:

Both functions you mentioned serve the same purpose, but the “Connect Lines/ Members” command behaves a bit differently. This is intentional and controlled by a specific setting:

https://www.dlubal.com/en/downloads-and-information/documents/online-manuals/rfem-6/003180

What you can do

  • You can disable this behavior in the Program Options.

  • Once disabled, both functions will react exactly as you expect.

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So just to be clear:
:backhand_index_pointing_right: This is not a bug, but designed behavior that can be adjusted as explained.

If you need help finding the option or have further questions, feel free to ask :+1:

Best regards
Stefan Hoffmann

1 Like
5

Thank you for your answer :folded_hands:
I was not aware of this. This is a direct solution to my problem. :slight_smile:

Additionally I now wonder what else this setting “Copy properties to created lines/members” controls.
From what I’ve checked so far, if I have assigned comments or support and line/member parameters (such as hinges, reinforcement, etc.), they all remain on the created lines.

So what is not copied to the new lines when I use the “Connect” tool? :thinking:

6

Hi r.sajdak,

We don’t have a complete list of all objects affected by this option. However, based on our internal checks, the following objects use different split logic depending on the selected setting:

  • Member Transverse Weld

  • Member Local Section Reduction

  • Effective Lengths

    • These are either copied or moved – they are not split

  • Boundary Conditions

    • Same behavior as Effective Lengths

  • Concrete Reinforcement

  • Member Imperfection

  • Loads

  • Member Result Intermediate Points

  • Member Section Distribution

  • Member Eccentricities

  • Member End Slope

  • and more

I hope this overview helps you better understand the behavior :+1:
If you need details on a specific object or scenario, feel free to ask!

Best regards
Stefan Hoffmann