Koiter Asymptotic Analysis Of Thin-Walled Cold-Formed Steel Members

Ungureanu, Viorel; Dubina, Dan; Crisan, Andrei; Madeo, Antonio; Zagari, Giuseppe; Zucco, Giovanni; Zinno, Raffaele

doi:10.1515/ama-2015-0039

Abstract

An imperfection sensitivity analysis of cold-formed steel members in compression is presented. The analysis is based on Koiter’s approach and Monte Carlo simulation. If the modes interaction is correctly accounted, than the limit load and the erosion of critical buckling load can be easily evaluated. Thousands of imperfection can be analysed with very low computational cost and an effective statistical evaluation of limit performance can be carried out. The analysis is done on pallet rack uprights in compression, based on an intensive experimental study carried out at the Politehnica University of Timisoara.

References

1. Barbero E.J., Madeo A., Zagari G., Zinno R., Zucco G. (2014), Koiter asymptotic analysis of folded laminated composite plates, Composites Part B: Engineering, 61, 267–274.10.1016/j.compositesb.2014.01.045
Search in Google Scholar
2. Barbero E.J., Madeo A., Zagari G., Zinno R., Zucco G. (2015), Imperfection sensitivity analysis of laminated folded plate, Thin-Walled Structures, 90, 128-139.10.1016/j.tws.2015.01.017
Search in Google Scholar
3. Casciaro R. (2005), Computational asymptotic post-buckling analysis of slender elastic structures, in Phenomenological and Mathematical Modelling of Structural Instabilities, M. Pignataro, V. Gioncu (eds.), Vol. 470, CISM International Centre for Mechanical Sciences, Springer Vienna, 95–276, 2005.
Search in Google Scholar
4. Crisan A, Ungureanu V., Dubina D. (2012a), Behaviour of cold-formed steel perforated sections in compression: Part 1-Experimental investigations, Thin-Walled Structures, 61, 86-96.10.1016/j.tws.2012.07.016
Search in Google Scholar
5. Crisan A, Ungureanu V., Dubina D. (2012b), Behaviour of cold-formed steel perforated sections in compression: Part 2-Numerical investigations and design considerations, Thin-Walled Structures, 61, 97-105.10.1016/j.tws.2012.07.013
Search in Google Scholar
6. Dubina D. (2001), The ECBL approach for interactive buckling of thin-walled steel members, Steel Composite Structures, 1(1), 75-96.10.12989/scs.2001.1.1.075
Search in Google Scholar
7. Dubina D., Ungureanu V. (2002), Effect of imperfections on numerical simulation of instability behaviour of cold-formed steel members, Thin-Walled Structures, 40(3), 239–262.10.1016/S0263-8231(01)00046-5
Search in Google Scholar
8. Dubina D., Ungureanu V. (2014), Instability mode interaction: from Van Der Neut model to ECBL approach, Thin-Walled Structures, 81, 39–49.10.1016/j.tws.2013.10.014
Search in Google Scholar
9. Garcea G., Bilotta A., Madeo A., Casciaro R. (2014a), Direct Evaluation of the Post-Buckling Behavior of Slender Structures Through a Numerical Asymptotic Formulation, Direct Methods for Limit States in Structures and Materials, Springer Netherlands, 203-228.10.1007/978-94-007-6827-7_10
Search in Google Scholar
10. Garcea G., Bilotta A., Madeo A., Zagari G., Casciaro R. (2014b), A Numerical Asymptotic Formulation for the Post-buckling Analysis of Structures in Case of Coupled Instability, Special Issue Stability And Nonlinear Analysis Of Steel Structures – Research Advances, Romanian Journal of Technical Sciences Applied Mechanics, 59(1–2), 38-55.
Search in Google Scholar
11. Garcea G., Madeo A., Casciaro R. (2012a), The implicit corotational method and its use in the derivation of nonlinear structural models for beams and plates, Journal of Mechanics of Materials and Structures, 7(6), 509-538.10.2140/jomms.2012.7.509
Search in Google Scholar
12. Garcea G., Madeo A., Casciaro R. (2012b), Nonlinear FEM analysis for beams and plate assemblages based on the implicit corotational method, Journal of Mechanics of Materials and Structures, 7(6), 539-574.10.2140/jomms.2012.7.539
Search in Google Scholar
13. Gioncu V. (1994), General Theory of Coupled Instability, Thin-Walled Structures (Special Issue on Coupled Instability in Metal Structures – CIMS’92), 19(2-4), 81-128.10.1016/0263-8231(94)90024-8
Search in Google Scholar
14. Riks E. (1979), An incremental approach to the solution of snapping and buckling problems, International Journal of Solids and Structures, 15(7), 529–551, 1979.10.1016/0020-7683(79)90081-7
Search in Google Scholar
15. Ungureanu V., Dubina D. (2013), Sensitivity to imperfections of perforated pallet rack sections, Mechanics and Mechanical Engineering, Lodz University of Technology, 17(2), 209–222.
Search in Google Scholar
16. Zagari G., Madeo A., Casciaro R., de Miranda S., Ubertini F. (2013), Koiter analysis of folded structures using a corotational approach, International Journal of Solids and Structures, 50(5), 755–765.10.1016/j.ijsolstr.2012.11.007
Search in Google Scholar

Koiter Asymptotic Analysis Of Thin-Walled Cold-Formed Steel Members

Abstract

Paradigm

My account