FAQ 003116 EN-US

05/29/2019

Gerhard Rehm Add-on Modules RF-STEEL EC3 STEEL EC3

Which degrees of freedom are considered in the eigenvalue solver to determine the elastic critical moment for lateral-torsional buckling (Mcr) in the RF-/STEEL EC3 add-on module?

Answer

For the design with the equivalent member method and the general method, four degrees of freedom are considered in the eigenvalue solver. These are as follows:

  • uY' (displacement from plane)
  • φX' (rotation about the X'-axis)
  • φZ' (rotation about the Z'-axis)
  • ω (warping)
When the add-on module RF-/STEEL Warping Torsion is activated, there are seven degrees of freedom:

  • ux (displacement in x)
  • uy (displacement in y)
  • uz (displacement in z)
  • φx (rotation about the x-axis)
  • φy (rotation about the y-axis)
  • φz (rotation about the z-axis)
  • ω (warping)

Keywords

Critical moment Lateral-torsional buckling Eigenvalue solver Degree of freedom General method Equivalent member method Warping torsion

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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
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