- More than 45,000 users in 95 countries
- One software package for all application areas
- Free support provided by experienced engineers
- Short learning time and intuitive handling
- Excellent price/performance ratio
- Flexible modular concept, extensible according to your needs
- Scalable license system with single and network licenses
- Proven software used in many well-known projects
Why Dlubal Software?
Wind Simulation & Wind Load Generation
With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
The design of a torsional loaded beam according to AISC Design Guide 9 will be shown based on a verification example. The design will be performed with the RF-STEEL AISC add-on module and the RF-STEEL Warping Torsion module extension with 7 degrees of freedom.
The American Steel Joist Institute (SJI) recently developed Virtual Joists tables to evaluate the cross-section properties of cantilevers used for open steel steels ( Open Web Steel Joists ). These virtual-joist cross-sections describe comparable wide-flange beams that closely approximate the area of the chord flange, the effective moment of inertia, and the weight.
In RF- / STEEL AISC, the mode shapes of sets of members can be displayed graphically in a separate window after the calculation. To do this, select the relevant set of members in the results window and click the [Mode Shapes] button (see Figure).
Design and Stabilization of Beams Susceptible to Lateral-Torsional Buckling According to Eurocode 3 and AISC
A single-span beam with lateral and torsional restraint is to be designed according to the recommendations of Eurocode 3 and AISC. If the beam does not reach the required load-bearing capacity, it must be stabilized.
Requirements for the design of structural stability are given in the AISC 360 – 14th Ed. Chapter C. In particular, the direct analysis method provisions, which was previously located in Appendix 7 of the AISC 360 – 13th Ed., are described in detail. This method is considered an alternative to the effective length method which in turn eliminates the need for effective length (K) factors other than 1.0.
In the AISC 360 – 14th Ed. C2.2, the direct analysis method requires the consideration of initial imperfections to be taken into consideration. The important imperfection of recognition is column out-of-plumbness. According to C2.2a, the direct modeling of imperfections is one method to account for the effect of initial imperfections. However, in many situations, the expected displacements may not be known or easily predicted.
We often receive customer questions regarding the display of positive or negative eccentricity of positive transverse loads in RF‑/STEEL EC3 and RF-/STEEL AISC.
Do you have questions or need advice?
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