Torsional-Flexural Critical Force for Various Boundary Conditions

Ivan Balaz; Michal Kovac; Tomáš Živner; Yvona Kolekova

doi:10.4028/www.scientific.net/KEM.710.303

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 710Torsional-Flexural Critical Force for Various...

Torsional-Flexural Critical Force for Various Boundary Conditions

Abstract:

The system of governing differential equations of stability of members with the rigid open cross-sections was developed by Vlasov [1] in 1940. Goľdenvejzer [2] published in 1941 solution of this system by an approximate method. He proposed formula for torsional-flexural critical force N_cr.TF calculation which is modified and used in EN 1999-1-1 [3] (I.19). By introducing factor α_zw he take into account any combination of boundary conditions (BCs).The purpose of this paper is to verify this formula and explore the possibility to improve the factor α_zw. In the large parametrical study the authors investigated a lot of different shape of cross-sections, all 100 theoretical possible combinations of BCs and various member lengths. All results are evaluated regarding the reference results by finite element method (FEM).

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Periodical:

Key Engineering Materials (Volume 710)

Pages:

303-308

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.710.303

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Online since:

September 2016

Authors:

Ivan Balaz*, Michal Kovac, Tomáš Živner, Yvona Kolekova

Keywords:

Flexural Boundary Conditions, Monosymmetric Cross-Section, Thin-Walled Metal Member, Torsional Boundary Conditions

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References

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