Abstract
The analysis of thin-walled open section beams can be performed by means of Vlasov’s theory of the sectorial areas. It is well-known that this type of profiles, when subjected to torsional actions, are characterised by the war** deformation and, consequently, by a further stress state whose intensity is comparable with that produced by mere flexural deformations. In the literature many papers are focused on the structural behaviour of these elements, but, to the Author’s best knowledge, none proposed an experimental technique to evaluate first-hand this particular behaviour. In order to verify the classical theory of the sectorial areas, in the present paper an experiment regarding a thin-walled open section profile subjected to flexural and torsional loads is performed. With the help of a specific optical device, suitable for precision measurements, the war** displacements of a U-shaped section are easily acquired. These are compared to those derived, first, from an analytical formulation, originally devised to deal with vertical thin-walled bracings belonging to the structural core of a tall building, and, secondly, from a FE program, in which the steel profile is modelled by means of thin-shell elements. The numerical comparison confirms the reliability of the analytical formulation.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Timoshenko S (1945) Theory of bending, torsion and buckling of thin-walled members of open cross section. J Frankl Inst 239:201–361
Vlasov V (1961) Thin-walled elastic beams, 2nd edn. US Science Foundation, Washington, DC
Ambrosini D (2009) On free vibration of non-symmetrical thin-walled beams. Thin-Walled Struct 47:629–636
Ambrosini D (2010) Experimental validation of free vibrations from non-symmetrical thin walled beams. Eng Struct 32:1324–1332
Klausbruckner MJ, Pryputniewicz RJ (1995) Theoretical and experimental study of coupled vibrations of channel beams. J Sound Vib 183:239–252
Rendek S, Baláž I (2004) Distortion of thin-walled beams. Thin-Walled Struct 42:255–277
Dufort L, Grédiac M, Surrel Y (2001) Experimental evidence of the cross-section war** in short composite beams under three point bending. Compos Struct 51:37–47
Carpinteri Al, Carpinteri An (1985) Lateral loading distribution between the elements of a three-dimensional civil structure. Comput Struct 21:563–580
Carpinteri A, Lacidogna G, Puzzi S (2010) A global approach for three dimensional analysis of tall buildings. Struct Des Tall Spec Build 19:518–536
Carpinteri A, Corrado M, Lacidogna G, Cammarano S (2012) Lateral load effects on tall shear wall structures of different height. Struct Eng Mech 41:313–337
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 The Society for Experimental Mechanics, Inc.
About this paper
Cite this paper
Cammarano, S., Lacidogna, G., Montrucchio, B., Carpinteri, A. (2015). Experimental Evaluation of the War** Deformation in Thin-Walled Open Section Profiles. In: **, H., Sciammarella, C., Yoshida, S., Lamberti, L. (eds) Advancement of Optical Methods in Experimental Mechanics, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-06986-9_26
Download citation
DOI: https://doi.org/10.1007/978-3-319-06986-9_26
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-06985-2
Online ISBN: 978-3-319-06986-9
eBook Packages: EngineeringEngineering (R0)