Nonlinear Finite Element Analysis of Steel Frame with Semi-Rigid Connections

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In conventional analysis and design, the beam-column connections are divided into two categories: fully rigid joints and perfectly pinned joints. Actually, most beam-column connections exhibit flexibility. Idealized connections may diverge from the real reaction of structures. This article presents a hybrid finite-element model that consists of a beam element with two semi-rigid connections at the ends for studying the effect of the flexibility on the structures. Based on the theory of finite deformation, the first-order and the second-order stiffness matrix and the equilibrium equation of hybrid beam element were got. A nonlinear finite element analysis program was developed to analysis the steel frames with semi-rigid connections. At last, one-bay, two-story semi-rigid planar steel frame was analyzed using the program, and some conclusions about the effect of semi-rigid connections flexibility were obtained.

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Edited by:

Chunliang Zhang and Paul P. Lin

Pages:

1199-1202

Citation:

G. H. Li et al., "Nonlinear Finite Element Analysis of Steel Frame with Semi-Rigid Connections", Applied Mechanics and Materials, Vols. 226-228, pp. 1199-1202, 2012

Online since:

November 2012

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$41.00

[1] G.R. Monforton and T.S. Wu. Matrix analysis of semi-rigidly connected frames. Journal of Structural Division, ASCE, vol. 89(1963), ST6, p.13.

[2] E. Lightfoot and A.P. Le Messurier. Elastic analysis of frameworks with elastic connections. Journal of Structural Division, ASCE, vol. 100(1974), ST6, p.1297.

[3] B. S. Dhillon and J.W. O'Malley. Interactive Design of Semirigid Steel Frames. Journal of Structural Engineering. ASCE, vol. 125(1999), No. 5, p.556.

DOI: https://doi.org/10.1061/(asce)0733-9445(1999)125:5(556)