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Analysis of tapered steel frames using beam elements and comparison with shell elements
Boissonnade, N.; Degée, Hervé
2005In Proceedings of the 4th European Conference on Steel Structures
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Keywords :
Tapered frame; beam finite element; shell model; torsional deformations
Abstract :
[en] This paper deals with the consequences of modelling a tapered steel frame with beam elements rather than shell elements. It starts by presenting a specific beam element accounting for the tapering that allows performing geometrically as well as materially non-linear analysis. Then, several kinds of analyses are carried out on two different frames and the results obtained using shell elements, tapered beam elements and prismatic beam elements are compared. This comparison shows that the use of tapered elements leads to results in close agreement with those obtained by shell elements, unlike the prismatic ones. The paper aims at showing that resorting to a so-called segmentation technique should be decided carefully. It also intends at showing the accuracy and convenience of tapered elements when compared to shell models: the total number of degrees of freedom is indeed significantly reduced, leading to easier meshing, shorter computation time and easier interpretation of results.
Disciplines :
Civil engineering
Author, co-author :
Boissonnade, N.
Degée, Hervé ;  Université de Liège - ULiège > Département ArGEnCo > Département ArGEnCo
Language :
English
Title :
Analysis of tapered steel frames using beam elements and comparison with shell elements
Publication date :
2005
Event name :
4th European Conference on Steel Structures
Audience :
International
Main work title :
Proceedings of the 4th European Conference on Steel Structures
Pages :
1.4.33-40
Peer reviewed :
Peer reviewed
Available on ORBi :
since 14 December 2009

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