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FAQ 000125 | In the "Edit Member" dialog box, there is the "Effective Lengths" tab. How does the modified effective length factor or the "Check exceeding of critical buckling load" option affect the calculation in RFEM?

Video 01 - FAQ Explanatory Video

Dialog Box 'Edit Member': Effective Lengths

Figure 01 - Dialog Box 'Edit Member': Effective Lengths

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15 October 2019

000125

Robert Vogl

Calculation

RFEM

RSTAB

In the 'Edit Member' dialog box, there is the 'Effective Lengths' tab. How does the modified effective length factor or the 'Check exceeding of critical buckling load' option affect the calculation in RFEM?

Answer

The effective length factors that you can change in the 'Effective Lengths' tab are not considered in the determination of internal forces in RFEM or RSTAB. These values are presettings for add-on modules used for performing stability analyses, for example RF-/STEEL EC3 or RF-/TIMBER Pro. The values will be considered in the modules only.

However, the 'Check exceeding of critical buckling load' check box has an influence on the calculation: if the the critical load is reached, the member fails. In this case, the program shows a message about the instability.

Keywords

effective length effective length factor buckling load critical load

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Associated Products
RFEM Main Program
RFEM 5.xx

RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD
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