Abstract

JUAREZ LUNA, Gelacio  and  TENORIO MONTERO, Enrique. Beam-column finite element with embedded discontinuities for modelling damage in reinforced concrete prismatic elements. Ing. sísm [online]. 2017, n.96, pp.39-65. ISSN 0185-092X.

Frame elements with embedded discontinuities to model the development of hinges are formulated. In these elements, damage is modelled as the development of hinges, transversal dislocations and axial discontinuities. These elements use constitutive models to include the capacity of the moment, shear force and axial force, based on the damage mechanics and experimental tests reported in the literature, which include the constitutive behaviour of concrete with steel reinforcement bars. To show the ability of the formulated finite elements with embedded discontinuities for modelling damage, numerical examples of reinforced concrete structural beams and frames under loads, which induce damage. In these numerical examples, the load-displacement curves are in agreement with those reported in the literature.

Keywords : collapse; discontinuities; damage; dislocation; articulation; softening.

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