Analysis of brace stiffness influence on stability of the truss

• Autorzy: Krajewski M. , Iwicki P.

Identyfikatory

DOI

10.1515/ijame-2015-0007

• Języki publikacji: EN

Abstrakty

EN

The paper is devoted to the numerical and experimental research of stability of a truss with side elastic supports at the top chord. The structure is a model of a real roof truss scaled by factor ¼. The linear buckling analysis and non-linear static analysis were carried out. The buckling length factor for the compressed top chord was calculated and the limit load for the imperfect truss shell model with respect to brace stiffness was obtained. The relation between brace normal force and loading of the truss is presented. The threshold stiffness of braces necessary to obtain the maximum buckling load was found. The truss load bearing capacity obtained from numerical analysis was compared with Eurocode 3 requirements.

Słowa kluczowe

EN

buckling load; limit load; brace stiffness; imperfection

PL

kratownica; analiza numeryczna; konstrukcja stalowa

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2015
• Tom: Vol. 20, no. 1
• Strony: 97--108
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Krajewski M.

• Gdańsk University of Technology Faculty of Civil and Environmental Engineering ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk, POLAND

autor

Iwicki P.

• Gdańsk University of Technology Faculty of Civil and Environmental Engineering ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk, POLAND

Bibliografia

• [1] Autodesk Robot Structural Analysis Professional (2010). - Autodesk Inc.
• [2] Biegus A. and Wojczyszyn D. (2004): Out of plane buckling length for trusses chords. (in Polish) – Inżynieria i Budownictwo, No.11, pp.607-610.
• [3] Femap with Nastran N.X. (2009): Finite element modeling and post-processing Version 10.1.1. – Siemens Product Lifecyde Management Software Inc.
• [4] Iwicki P. (2007): Stability of trusses with linear elastic side-supports. – Thin-Walled Structures, vol.45, No.10-11, pp.849-854.
• [5] Iwicki P. (2010): Sensitivity analysis of critical forces of trusses with side bracing. – Journal of Constructional Steel Research 66, pp.923-930.
• [6] Iwicki P. and Krajewski M. (2013): 3D buckling analysis of a truss with horizontal braces. – Mechanics and Mechanical Engineering, vol.17, No.1, pp.49-58.
• [7] Jankowska-Sandberg J. and Kołodziej J. (2013): Experimental study of steel truss lateral-torsional buckling. – Engineering Structures 46, pp.165-172.
• [8] Krajewski M. and Iwicki P. (2014): Stability and load bearing capacity of a truss with elastic braces. – Recent Advances in Computational Mechanics, Taylor & Francis, London, pp.17-22.
• [9] EN 1993-1-3 Eurocode 3 (2006): Design of steel structures.- Part 1-1: General rules and rules for buildings.
• [10] PN-EN 1090-2+A1 2012. Completion of steel structures and aluminum. Part 2: The technical requirements for steel construction. (in Polish) – Warsaw: PKN.