How to perform a lateral-torsional buckling analysis for asymmetrical steel cross-sections?

Answer

In this case, it is recommended to use the module extension RF-/STEEL Warping Torsion :

RF-/STEEL Warping Torsion is an extension of the RF-/STEEL EC3 and RF-/STEEL AISC add-on modules. It performs flexural-torsional buckling analyzes of members according to the second-order analysis with seven degrees of freedom and a form of imperfection affecting the mode shape.

You can find more information in the links below this FAQ.

Keywords

Asymmetric Warping torsion General method

Links

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RSTAB Steel and Aluminum Structures
STEEL EC3 8.xx

Add-on Module

Design of steel members according to Eurocode 3

Price of First License
1,480.00 USD
RSTAB Steel and Aluminum Structures
STEEL AISC 8.xx

Add-on Module

Design of steel members according to the American standard ANSI/AISC 360

Price of First License
1,480.00 USD
RSTAB Steel and Aluminum Structures
STEEL Warping Torsion 8.xx

Module Extension for STEEL EC3 and RF-STEEL AISC

Warping torsion analysis according to the second-order theory with 7 degrees of freedom

Price of First License
850.00 USD
RFEM Steel and Aluminum Structures
RF-STEEL EC3 5.xx

Add-on Module

Design of steel members according to Eurocode 3

Price of First License
1,480.00 USD
RFEM Steel and Aluminum Structures
RF-STEEL AISC 5.xx

Add-on Module

Design of steel members according to the American standard ANSI/AISC 360

Price of First License
1,480.00 USD
RFEM Steel and Aluminum Structures
RF-STEEL Warping Torsion 5.xx

Module Extension for RF-STEEL EC3 and RF-STEEL AISC

Warping torsion analysis according to the second-order theory with 7 degrees of freedom

Price of First License
850.00 USD