Numerical analysis of steel–concrete composite beams with partial interaction : a plastic-hinge approach.
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Date
2021
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Abstract
A two-dimensional displacement-based formulation with a plastic-hinge approach for the numerical analysis
of composite beams with partial shear connection is presented here. The co-rotational approach is applied
in the numerical model to allow large displacements and rotations. The axial and transverse displacement
functions are defined to avoid locking problems. The simulation of the materials and shear connection
nonlinear behaviors are approached via the strain compatibility method (SCM), where the constitutive relations
are explicitly used. The slip in the steel section–concrete slab interface is considered by the axial force
decomposition in the cross-section level by the degree of composite action, without introducing degrees of
freedom in the finite element. The numerical proposal of the present work is tested by simulating steel–concrete
composite beams and comparing the obtained results with the experimental and numerical data already known.
This formulation is verified as numerically stable and without locking phenomena, and good convergence with
literature results was obtained. However, more refined finite element (FE) meshes are needed.
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Keywords
Partial shear connection, Degree of composite action
Citation
LEMES, I. J. M. et al. Numerical analysis of steel–concrete composite beams with partial interaction: a plastic-hinge approach. Engineering Structures, v. 248, 2021. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0141029621013791>. Acesso em: 29 abr. 2022.