Local Buckling of Fire-Exposed Aluminum Members: New Design Model
Publication: Journal of Structural Engineering
Volume 136, Issue 1
Abstract
Design models for local buckling of fire-exposed aluminum sections are currently lacking. Based on analyses with validated finite-element models, this paper investigates local buckling of extruded sections with stress-strain relationships representative for fire-exposed aluminum alloys. Due to the fact that these stress-strain relationships are more curved than at ambient temperature, existing design models developed for ambient temperature cannot be used for fire design. This paper presents a new design model for local buckling under fire conditions. The study concludes that the local buckling resistance decreases less fast than the plastic capacity at increasing temperature. This is mainly due to the fact that the ratio between the modulus of elasticity and the 0.2% proof stress increases with increasing temperature for structural aluminum alloys.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research was carried out under the Project No. UNSPECIFIEDMC1.02147 in the framework of the Research Program of the Materials innovation institute M2i (www.m2i.nl), the former Netherlands Institute for Metals Research.UNSPECIFIED
References
ADM. (2005). Aluminum design manual, The Aluminum Association, Arlington, Va.
De Witte, F. C., and Kikstra, W. P. (2007). DIANA users' manual—Release 9.2, TNO Diana, Delft.
EN 1990. (2002). “Basis of structural design.” Eurocode 0, CEN, Brussels.
EN 1999-1-1. (2007). “Design of aluminium structures—Part 1–1: General structural rules.” Eurocode 9, CEN, Brussels.
EN 1999-1-2. (2007). “Design of aluminium structures—Part 1–2: General rules—Structural fire design.” Eurocode 9, CEN, Brussels.
Hopperstad, O. S., Langseth, M., and Hanssen, L. (1997). “Ultimate Compressive strength of plate elements in aluminium: Correlation of finite element analyses and tests.” Thin-Walled Struct., 29, 31–46.
Hopperstad, O. S., Langseth, M., and Tryland, T. (1999). “Ultimate strength of aluminium alloy outstands in compression: Experiments and simplified analysis.” Thin-Walled Struct., 34, 279–294.
Kaufman, J. G. (1999). Properties of aluminium alloys—Tensile, creep and fatigue data at high and low temperatures, ASM International, Materials Park, Ohio.
Landolfo, R., and Mazzolani, F. M. (1997a). “Different approaches in the design of slender aluminium alloy sections.” Thin-Walled Struct., 27, 85–102.
Landolfo, R., and Mazzolani, F. M. (1997b). The background of EC9 design curves for slender sections.
Langseth, M., and Hopperstad, O. S. (1997). “Local buckling of square thin-walled aluminium extrusions.” Thin-Walled Struct., 27, 117–126.
Maljaars, J., Soetens, F., and Katgerman, L. (2008a). “Constitutive model for aluminium alloys exposed to fire conditions.” Metall. Trans. A, 39, 778–789.
Maljaars, J., Soetens, F., and Snijder, H. H. (2009a). “Local buckling of aluminium structures exposed to fire. Part 1: Tests.” Thin-Walled Struct., 47, 1404–1417.
Maljaars, J., Soetens, F., and Snijder, H. H. (2009b). “Local buckling of aluminium structures exposed to fire. Part 2: Finite element models.” Thin-Walled Struct., 47, 1428.
Mazzolani, F. M. (1995). Aluminium alloy structures, 2nd Ed., E & FN Spon, London.
Mazzolani, F. M., Faella, C., Piluso, V., and Rizzano, G. (1997). “Local buckling of aluminium alloy RHS-members: Experimental analysis.” Proc., XVI Congresso C.T.A., Italian Conf. on Steel Construction, Volume honouring Professor J. Lindner, Ancona, Italy, 1–12.
Mennink, J. (2002). “Cross-sectional stability of aluminium extrusions.” Ph.D. dissertation, Eindhoven Univ. of Technology, The Netherlands.
Ramberg, W., and Osgood, W. R. (1943). “Description of stress-strain curves by three parameters.” Technical Rep. No. 902, National Advisory Committee for Aeronautics, Washington, D.C.
Stowell, E. Z. (1948). “A unified theory of plastic buckling of columns and plates.” Technical Rep. No.1556, National Advisory Committee for Aeronautics, Washington, D.C.
Von Karman, T., Sechler, E. E., and Donnell, L. H. (1932). “The strength of thin plates in compression.” Trans. Am. Soc. Mech. Eng., 54, 53–56.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 136 • Issue 1 • January 2010
Pages: 66 - 75
Copyright
© 2010 ASCE.
History
Received: Apr 1, 2008
Accepted: Jul 31, 2009
Published online: Aug 6, 2009
Published in print: Jan 2010
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.