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CBFEM for steel connections
Hi!
This method (CBFEM - https://www.cbfem.com/) is used by HILTI, IDEAStatica and other web applications for calculating steel connections. Showing the mesh is clear that there is an offset between the shells but I didn't understand how is simulated the bolt (traction and shear and bearing for plate holes) ...see attached pictures.
Some idea?
Regards
This method (CBFEM - https://www.cbfem.com/) is used by HILTI, IDEAStatica and other web applications for calculating steel connections. Showing the mesh is clear that there is an offset between the shells but I didn't understand how is simulated the bolt (traction and shear and bearing for plate holes) ...see attached pictures.
Some idea?
Regards
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Comments
You could model the bolts as solids and use Pre-tension section on them, and connected to the plates by Contact.
https://www.steelchecks.com/connections/whatis.asp
Then came Idea Statica and spanish
https://info.cype.com/es/software/cype-connect/
and the german
https://www.dlubal.com/en/products/add-ons-for-rfem-6-and-rstab-9/connections/steel-joints/steel-joints-features
https://www.amazon.es/Steel-Connection-Analysis-Paolo-Rugarli-ebook/dp/B079VSGMD8/ref=sr_1_12?qid=1703078116&refinements=p_27:Paolo+Rugarli&s=books&sr=1-12
I hope this information is helpful to those interested in the topic and encourages other members to share their own insights.
Other two Italian Steel Connection Design Softwares with FEM:
- CDJ Win from STS srl (https://www.stsweb.it/cdj-win/)
- NeXus by ACCA Software (https://www.accasoftware.com/en/steel-connection-design-software)
- A 2005 book of CSE in Italian (https://www.castaliaweb.com/ita/P/CSE/bookcse_ita.pdf)
- Cype Connect - Guía de uso in Spanish (https://www.amazon.com/-/es/Cype-Connect-Guía-uso-Spanish/dp/B0BKCWMQ6J)
- And the IDEA StatiCa Connection Key Publications:
a) According to AISC standard - Steel Connection Design by Inelastic Analysis (https://www.amazon.com/dp/B0DFVQ6JRZ?ref=cm_sw_r_cp_ud_dp_N7WM5WJW33FD1PNH1FQ1&ref_=cm_sw_r_cp_ud_dp_N7WM5WJW33FD1PNH1FQ1&social_share=cm_sw_r_cp_ud_dp_N7WM5WJW33FD1PNH1FQ1&starsLeft=1&skipTwisterOG=1)
b) According to Eurocode standard - Component-based finite element design of steel connections (https://payhip.com/b/p0Hr)
CBFEM powers multiple SW tools (https://static.au-uw2-prd.autodesk.com/Class_Presentation_BES322748_Mario_Fitz.pdf):
• IDEA StatiCa
• HILTI PROFIS Engineering
• Advance Design Connection
• Voestalpine Profilform
Dlubal also uses CBFEM (https://www.dlubal.com/en/support-and-learning/support/faq/005573?srsltid=AfmBOooRzPFkUlhukWBEnfpSY7QHLROAiyd13AqsX5so4xGGhYjQsrgT) but according to me it is inappropriate to say that the others use method CBFEM because they have devised their own methodologies.
CSE (the first software in the world to automate the checks of generic connections) in particular has a number of general methods useful to check every type of connection or joint.
- https://github.com/xcfem/xc
- https://forum.freecad.org/viewtopic.php?t=42390
- ConnectFEA / SolidFEA by BIMWERX (https://bimwerxfea.com/ConnectFEA.html)
BIMWERX is a New Zealand software house specializing in the development of advanced solutions for structural engineering, with a particular focus on the integration between Finite Element Analysis and AI-driven technologies