Buckling loads for steel tube with flattened ends
- 139 Downloads
This paper presents a theoretical and experimental analysis of buckling load of the circular tube with flattened ends. The buckling tests were conducted on the steel tubes with different length and diameter, and the critical buckling force was determined from the measured relation between the lateral displacement and axial force. Analytical solutions for the critical buckling force of the circular tubes were derived in the series form, and a numerical procedure based on the finite difference method and quasi-Newton method was developed to determine the critical buckling load. The results show that both analytical and numerical solutions were in agreement with those measured from the experiment. Moreover, the effect of flattened part length on the value of the critical buckling force was investigated there. The paper provides a mathematical model of mentioned case and gives us some simplifications calculating the critical buckling force.
KeywordsBuckling Critical buckling force Flattened ends Stability loss Non-uniform bars
- 5.De Freitas, C.A.S., Bezerra, L.M., De Silva, R.S.Y.: Theoretical and experimental analysis of steel space truss with stamped connection. In: Proceedings of SDSS’ Rio 2010: International Colloquium Stability and Ductility of Steel Structures, vol. 2, pp. 1169–1176 (2010)Google Scholar
- 6.De Freitas, C.A.S., Bezerra, L.M., Silva, R.S.Y.C.: Numerical and experimental study of steel space truss with stamped connections. J. Civ. Eng. Archit. 5, 494–504 (2011)Google Scholar
- 16.Riahi, H.T., Barjoui, A.S., Bazazzadeh, S., Etezady, S.M.A.: Buckling analysis of non-prismatic columns using slope-deflection method. In: 15 World Conference of Earthquake Engineering Proceeding, vol. 10 (2012)Google Scholar
- 17.Rodrigues, M.C., De Lima, L.R.O., De Andrade, S.A.L., Vellasco P.C.G.D.S., Da Silva, J.G.S.: Numerical modelling of extended endplate beam-to-column joints subjected to bending moment and axial force. In: Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing, vol. 67 (2011)Google Scholar