To explore the possibility of proper modeling, the dissipation in specimens made of concrete, a reduced two-degrees-of-freedom model, obtained from a nonlinear micromorphic model is employed in the case of cyclic mono-axial compressive tests. This model assumes that the nonlinear nature of the mechanical response arises from the microstructure and specifically from the micro-cracks regularly present in the cement matrix. The dissipation, therefore, is introduced as Coulomb-type friction associated with the relative motion of the faces of the micro-cracks. Numerical simulations showing that the proposed model is fitting to describe some of the known responses of the concrete are performed.

An Application of Coulomb-Friction Model to Predict Internal Dissipation in Concrete

Aretusi G.;Ciallella A.
2021

Abstract

To explore the possibility of proper modeling, the dissipation in specimens made of concrete, a reduced two-degrees-of-freedom model, obtained from a nonlinear micromorphic model is employed in the case of cyclic mono-axial compressive tests. This model assumes that the nonlinear nature of the mechanical response arises from the microstructure and specifically from the micro-cracks regularly present in the cement matrix. The dissipation, therefore, is introduced as Coulomb-type friction associated with the relative motion of the faces of the micro-cracks. Numerical simulations showing that the proposed model is fitting to describe some of the known responses of the concrete are performed.
978-3-030-42706-1
978-3-030-42707-8
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11697/186114
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