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dc.contributor.authorOliver Olivella, Xavier
dc.contributor.authorMora Méndez, Diego Fernando
dc.contributor.authorHuespe, Alfredo Edmundo
dc.contributor.authorWeyler Pérez, Rafael
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria
dc.identifier.citationOliver, F. [et al.]. A micromorphic model for steel fiber reinforced concrete. "International journal of solids and structures", 15 Octubre 2012, vol. 49, núm. 21, p. 2990-3007.
dc.description.abstractA new formulation to model the mechanical behavior of high performance fiber reinforced cement composites with arbitrarily oriented short fibers is presented. The formulation can be considered as a two scale approach, in which the macroscopic model, at the structural level, takes into account the mesostructural phenomenon associated with the fiber-matrix interface bond/slip process. This phenomenon is contemplated by including, in the macroscopic description, a micromorphic field representing the relative fiber-cement displacement. Then, the theoretical framework, from which the governing equations of the problem are derived, can be assimilated to a specific case of the Material Multifield Theory. The balance equation derived for this model, connecting the micro stresses with the micromorphic forces, has a physical meaning related with the fiber-matrix bond slip mechanism. Differently to previous procedures in the literature, addressed to model fiber reinforced composites, where this equation has been added as an additional independent ingredient of the methodology, in the present approach it arises as a natural result derived from the multifield theory. Every component of the composite is defined with a specific free energy and constitutive relation. The mixture theory is adopted to define the overall free energy of the composite, which is assumed to be homogeneously constituted, in the sense that every infinitesimal volume is occupied by all the components in a proportion given by the corresponding volume fraction. The numerical model is assessed by means of a selected set of experiments that prove the viability of the present approach.
dc.format.extent18 p.
dc.subjectÀrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica::Aplicacions informàtiques a la física i l‘enginyeria
dc.subjectÀrees temàtiques de la UPC::Edificació::Materials de construcció
dc.subject.lcshComputational mechanics
dc.subject.otherHigh performance fiber reinforced concrete (HPFRC)
dc.subject.otherFailure of HPFRC
dc.subject.otherShort reinforcement fibers
dc.subject.otherMicromorphic materials
dc.subject.otherMaterial multifield theory
dc.subject.otherMorphological descriptors
dc.subject.otherCOMP-DES-MAT Project
dc.subject.otherCOMPDESMAT Project
dc.titleA micromorphic model for steel fiber reinforced concrete
dc.subject.lemacMecànica computacional
dc.contributor.groupUniversitat Politècnica de Catalunya. (MC)2 - Grup de Mecànica Computacional en Medis Continus
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/320815/EU/Advanced tools for computational design of engineering materials/COMP-DES-MAT
local.citation.authorOliver, F.; Mora, D. F.; Huespe, A.; Weyler, R.
local.citation.publicationNameInternational journal of solids and structures

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