The effect of nonlinear restraint on torsional buckling and post-buckling behaviour of a thin-walled column

• Autorzy: Szymczak C.
• Języki publikacji: EN

Abstrakty

EN

Torsional buckling and post-buckling of a simply supported axially compressed thin-walled column of open bisymmetric cross-section with a central restrain has been investigated. The nonlinear behaviour of the restraint against the rotation angle of the cross-section has been assumed. The stability consideration is based upon the classical theory of beams with nondeformable cross-section. The solution of the buckling and post-buckling behaviour problem formulated has been found with the perturbation approach. The critical load and the initial post-buckling path of equilibrium for I - column for the cubic relation of the restraint reaction and the rotation angle have been determined. The results show the considerable effect of nonlinearity of the restraint behaviour on the post-buckling path of equilibrium of the column in comparison with the linear restraint.

Słowa kluczowe

EN

thin-walled columns; torsional buckling; post-buckling behaviour; non-linear theory

PL

kolumna cienkościenna; wyboczenie skrętne; teoria nieliniowa

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Foundations of Civil and Environmental Engineering
• Rocznik: 2006
• Tom: No. 7
• Strony: 333--342
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Szymczak C.

• Faculty of Civil and Environmental Engineering Gdansk University of Technology Tel.: [phone] fax: [phone],

Bibliografia

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• 2. Szymczak C.: Buckling and initial post-buckling behavior of thin-walled I columns, Comput. Struct., 11, 2 (1980) 481-487.
• 3. Szymczak C.: Post-critical state of thin-walled l bar after torsional buckling [in Polish], Arch. Inż. Ląd., 25, 3 (1979) 399-411.
• 4. Szymczak C.: Effect of elastic restraints on buckling loads and initial post-buckling behaviour of thin-walled coluran, Arch. Civ. Engng., 45, 4 (1999) 635-649.
• 5. Plaut R.H., Yang J-G.: Lateral bracing forces in columns with two unequal spans, J. Struct. Engrg., 119, 10 (1993) 2896-2912.
• 6. Plaut R.H.: Reąuirements for lateral bracing of columns with two spans. J. Struct. Engrg., 119, 10(1993)2913-2931.
• 7. Yalentino J., Pi Y.-L., Trahair N. S.: Inelastic buckling of steel bcams with central torsional restraints, J. Struct. Engng., 123,9 (1997) 1180-1186.
• 8. Thompson J. M. T., Hunt G. W. A generał theory of elastic stability, John Wiley & Sons, London, 1973.