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Incremental modeling
of T-stub connections
Minas E. Lemonis and Charis J. Gantes |
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Vol. 1 (2006), No. 7, 1135–1159
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Abstract |
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An incremental model for predicting the mechanical characteristics of -stub steel connections is presented in this paper. The response is calculated analytically on the basis of a simple beam representation for the flange and a deformational spring for the bolt. Contact phenomena in the flange are taken into account, and by means of an incremental procedure it becomes possible to follow the development of these phenomena throughout the loading history. Material nonlinearity is also accounted for, both in the flange and the bolt, assuming a bilinear constitutive model. We propose several refinements of the model, which enhance its effectiveness with respect to intricate characteristics of -stub behavior, such as bolt-flange interaction and three-dimensional geometry. The performance of the model is validated by comparison to experimental results found in the literature and by a parametric study performed in parallel with three-dimensional finite element analyses. |
Keywords
T-stub connection, T-stub model, steel connections, contact
phenomena, nonlinearity
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Milestones
Received: 29 December 2005
Revised: 5 May 2006
Accepted: 19 June 2006
Published: 1 November 2006
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Authors |
| Minas E. Lemonis | |
| National Technical University of
Athens Laboratory of Steel Structures 9 Iroon Polytechniou 157 80, Zografou Greece |
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| Charis J. Gantes | |
| National Technical University of
Athens Laboratory of Steel Structures 9 Iroon Polytechniou 157 80, Zografou Greece |
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