Lateral Torsional Buckling of Split Aluminium Mullion

Davor Skejić; Mladen Lukić; Nebojša Buljan; Hrvoje Vido

doi:10.4028/www.scientific.net/KEM.710.445

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 710Lateral Torsional Buckling of Split Aluminium...

Lateral Torsional Buckling of Split Aluminium Mullion

Abstract:

Curtain wall industry is the major user of aluminium as a structural material in buildings, with two basic curtain wall systems: stick and unitised. The latter is preassembled in shops, with the main feature that frame profiles are split in two interlocking halves. Such cross sections are complex, open and prone to lateral torsional buckling. General formulas for the calculation of elastic critical moment for lateral-torsional buckling are provided in the EN 1999-1-1, with a long and complicated procedure for non-symmetrical sections which makes it pretty impractical for everyday use. The problem of such sections can also be assessed by FEM modelling, which is a time consuming and complex process. Curtain wall industry is in a need of a swift, if approximate and conservative, method for checking the risk of lateral torsional buckling of profiles with non-symmetrical cross sections. Some available analytical methods are applied on a practical example and their results compared to those obtained using FEM modelling.

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Periodical:

Key Engineering Materials (Volume 710)

Pages:

445-450

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.710.445

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Online since:

September 2016

Authors:

Davor Skejić*, Mladen Lukić, Nebojša Buljan, Hrvoje Vido

Keywords:

Aluminium, Analytical Methods, Finite Element Method, Lateral Torsional Buckling, Non-Symmetrical Cross Section

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* - Corresponding Author

References

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