Activating Internal Member Division for Stability Analysis

Technical Article on the Topic Structural Analysis Using Dlubal Software

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When analyzing structural elements susceptible to buckling by using the modules RF‑STABILITY (for RFEM) or RSBUCK (for RSTAB), it might be necessary to activate the internal division of members.

If there are, for example, truss members, these are not divided internally. Thus, a global failure shape is determined as the first mode shape in the stability analysis (see the figure on the right). However, when activating the member divisions, it is clear that a local failure of the structure becomes decisive (see the figure on the left). The figure shows the option for activating the division in RF‑STABILITY.

Author

Dipl.-Ing. (FH) Ulrich Lex

Dipl.-Ing. (FH) Ulrich Lex

Product Engineering & Customer Support

Mr. Lex is responsible for the development of the products for glass structures and for quality assurance of the RFEM program.
He also provides technical support for customers.

Keywords

Stability Local failure Buckling

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  • Updated 1 July 2021

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RFEM
RF-STABILITY

Add-on Module

Stability analysis according to the eigenvalue method

Price of First License
1,030.00 USD
RSTAB
RSBUCK

Add-on Module

Stability analysis according to the eigenvalue method

Price of First License
670.00 USD