In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.
Frequently Asked Questions (FAQ)
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AnswerNo, this is unfortunately not possible.If the "Tension Stiffening" option is not applied for the calculation, the damage parameter ζ is either "0" for "uncracked sections" or "1" for "cracked sections." For this, see the technical article about the distribution of the damage parameter ζ under Downloads below.Nevertheless, the manual specification of ζ = 0.5, for example, is not possible.
AnswerYes, the exponent n is applied differently. Design details can help you to understand this. For EN 1992‑1‑1, for example, n=2 is applied (see Figure 01), and for CSA A23.3-14, n=3 is applied (see Figure 02).
The coefficient ζ for the consideration of the pressure force distribution in the flange is a correction factor to determine the critical buckling moment Mcr for certain boundary conditions and loads.
In RF-/LTB, this correction factor ζ always refers to the largest bending moment of the equivalent member. The literature references often give the coefficient ζ in relation to the center of the equivalent member (see also RF-/LTB Manual).
However, the RF-/LTB also provides an option to define the zeta-coefficient manually. For this, select the option 'Assign LC/CO Individually' in chapter Method of Determining Mcr (see Figure).
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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.
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