Finite element modelling of plain and reinforced concrete specimens with the Kotsovos and Pavlovic material model, smeared crack approach and fine meshes

dc.contributor.authorMarkou, George
dc.contributor.authorRoeloffze, Wynand
dc.contributor.emailgeorge.markou@up.ac.zaen_ZA
dc.date.accessioned2021-06-17T11:54:03Z
dc.date.available2021-06-17T11:54:03Z
dc.date.issued2021-06
dc.description.abstractModelling of concrete through 3 D constitutive material models is a challenging subject due to the numerous nonlinearities that occur during the monotonic and cyclic analysis of reinforced concrete structures. Additionally, the ultimate limit state modelling of plain concrete can lead to numerical instabilities given the lack of steel rebars that usually provide with the required tensile strength inducing numerical stability that is required during the nonlinear solution procedure. One of the commonly used 3 D concrete material models is that of the Kotsovos and Pavlovic, which until recently it was believed that when integrated with the smeared crack approach, it can only be used in combination with relatively larger in size finite elements. The objective of this study is to investigate into this misconception by developing different numerical models that foresee the use of fine meshes to simulate plain concrete and reinforced concrete specimens. For the needs of this research work, additional experiments were performed on cylindrical high strength concrete specimens that were used for additional validation purposes, whereas results on a reinforced concrete beam found in the international literature were used as well. A discussion on the numerical findings will be presented herein by comparing the different experimental data with the numerically predicted mechanical response of the under study concrete material model.en_ZA
dc.description.departmentCivil Engineeringen_ZA
dc.description.librarianhj2021en_ZA
dc.description.urihttps://journals.sagepub.com/home/ijden_ZA
dc.identifier.citationMarkou, G. and Roeloffze, W. (2021) ‘Finite element modelling of plain and reinforced concrete specimens with the Kotsovos and Pavlovic material model, smeared crack approach and fine meshes’, International Journal of Damage Mechanics. 2021;30(6):845-871. doi:10.1177/1056789520986601.en_ZA
dc.identifier.issn1056-7895 (print)
dc.identifier.issn1530-7921 (online)
dc.identifier.other10.1177/1056789520986601
dc.identifier.urihttp://hdl.handle.net/2263/80352
dc.language.isoenen_ZA
dc.publisherSageen_ZA
dc.rights© The Author(s) 2021en_ZA
dc.subjectFinite element methoden_ZA
dc.subjectFine meshesen_ZA
dc.subjectReinforced concreteen_ZA
dc.subjectHigh-strength concreteen_ZA
dc.subjectSmeared crack approachen_ZA
dc.subjectDamage mechanicsen_ZA
dc.titleFinite element modelling of plain and reinforced concrete specimens with the Kotsovos and Pavlovic material model, smeared crack approach and fine meshesen_ZA
dc.typePostprint Articleen_ZA

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