Hello everyone,
As part of my bachelor's thesis, I am working on the structural analysis of a framework made of individually assembled thin-walled steel profiles. The individual sheets are to be joined together into a cross-section via riveted connections. For classic profiles, calculation using the beam model is straightforward, but for riveted, assembled cross-sections, I am uncertain how to model them correctly.
Therefore, my questions:
- Is there a way to calculate riveted profiles in Dlubal?
- Can such cross-sections simply be assumed to be fully effective, or must the composite action of the rivets be considered separately?
- Is it permissible to simplify riveted connections as screws?
- Or do you rather work with limiting cases (full composite action vs. no composite action)?
Thank you in advance!
Hello cestudent,
here are the answers to your questions:
-
In RFEM 6 and RSTAB 9, there is currently no specific integrated function for the direct design of riveted connections.
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This cannot be said generally. In general: the stiffer the connection, the stronger the composite action. With an infinitely stiff connection, you have full effectiveness. The stiffness of the connection depends on rivet spacing, material stiffness of the rivet, hole depth, etc.
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For modeling, I see no difference. Both function the same in terms of force transfer. However, I must admit that I have never dealt intensively with the topic of riveting myself. You should research it yourself again.
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Yes, as I described in point 3: infinite stiffness = full composite action, no stiffness = no composite action. In reality, your connection lies somewhere in between.
If you have any further questions, feel free to contact me :)
Best regards
Matthias