We provide hints and tips to help you get started with the basic program RFEM.
Dlubal RFEM 5 & RSTAB 8 - Add-on Modules: RF-/STEEL AISC
Video
First Steps with RFEM
Description
The add-on module performs the ultimate and the serviceability limit state designs of members and sets of members according to the American standards ANSI/AISC 360-05 and 360-10.
After all the detail settings for the designs are set, you have to define all necessary input data for the calculation in clearly arranged tables, such as material and cross-sections, intermediate lateral restraints, effective lengths for stability design for members and sets of members, individual support conditions and eccentricities.
Define your allowable deflections.
With the STEEL AISC add-on module, it is easily possible to optimize your cross-sections automatically. Minimize material costs and deliver economically optimized solutions.
The result windows list all detailed results sorted by specific subject in extendable tree menus.
It is possible to graphically display all result diagrams on members and sets of members in the main program.
Last but not least, it is possible to view the analysis progress in the global printout report of RSTAB or RFEM from the determination of internal forces up to the design results.
Keywords
ANSI AISC ANSI/AISC 360 LRFD ASD American standard Structural Analysis Structural Analysis Software Dynamic Analysis Design EC Eurocode BIM Building Information Modeling CAD FEA FEM Finite Elements Simulation Analysis Structural Engineering (Industry) Construction (Industry) Tutorial RFEM Tutorial design of steel structure 3D dyamic static Finite Elements analysis Steel Frame building NASCC
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New
Manual adjustment of the buckling curve according to EN 1993-1-1
The RF-/STEEL EC3 add-on module automatically transfers the buckling line to be used for the flexural buckling analysis for a cross-section from the cross-section properties. In particular for general cross -sections, but also for special cases, the assignment of the buckling line can be adjusted manually in the module input.
![Distribution of Forces and Moments in Column Base According to [1]](/-/media/Images/website/img/000001-010000/009601-009700/009638.png?la=en-US&mlid=7D34CEAAE7354583A29169095622B515&hash=1C29D4703C59F464778B8861B097C4BCC2E2CBC1)
![System and Loading According to [1]](/-/media/Images/website/img/000001-010000/009601-009700/009634.png?la=en-US&mlid=F0F0A23924B8424CA1C2905961DF676B&hash=EB7EDB8B793523A4241420070F0B8F5E64C0935D)
SHAPE-THIN | Cold-Formed Sections
SHAPE-THIN determines the effective cross-sections according to EN 1993-1-3 and EN 1993-1-5 for cold-formed sections. You can optionally check the geometric conditions for the applicability of the standard specified in EN 1993‑1‑3, Section 5.2.
The effects of local plate buckling are considered according to the method of reduced widths and the possible buckling of stiffeners (instability) is considered for stiffened sections according to EN 1993-1-3, Section 5.5.
As an option, you can perform an iterative calculation to optimize the effective cross-section.
You can display the effective cross-sections graphically.
Read more about designing cold-formed sections with SHAPE-THIN and RF-/STEEL Cold-Formed Sections in this technical article: Design of a Thin-Walled, Cold-Formed C-Section According to EN 1993-1-3.
- After running the design in RF-STEEL AISC, I receive error message 1002 - Invalid cross-section of type "Channel" according to F2. What does this error mean?
- Does RF-STEEL AISC perform torsion design per Design Guide No. 9?
- Why do I get large differences for the design of a longitudinally stiffened buckling panel in comparison with the German and Austrian National Annex?
- How can I perform the stability analysis in RF‑/STEEL EC3 for a flat bar supported on edges, such as 100/5? Although the cross-section is rotated by 90° in RFEM/RSTAB, it is displayed as lying flat in RF‑/STEEL EC3.
- How are the signs for the release results of a line release and line hinges interpreted?
- How can I create a curved or arched section?
- How are hot-dip galvanized components considered for fire resistance in the RF‑/STEEL EC3 add-on module?
- How is the rotational stiffness of a buckling stiffener determined in PLATE‑BUCKLING?
- In RF-/STEEL EC3, is the "Elastic design (also for cross-section class 1 and 2)" option under "Details → Ultimate Limit State" considered for the stability analysis when activated?
- How can I get the member end forces to design the connections?
