A continuum micromechanics-LEFM model for fiber reinforced concrete

Jithender J. Timothy, Günther Meschke

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A multiscale modeling approach for Fiber Reinforced Concrete (FRC) is proposed, which is based on the upscaling of micro cracks and the crack bridging effect of fibers from the scale of the individual micro-crack to the macro scale. Assuming the validity of Linear Fracture Mechanics at the scale of micro-cracks, a LEFM crack growth criterion for Mode-I dominated failure of an idealized penny shaped micro-crack considering fibers bridging the crack including fiber slip is coupled to a micromechanics model to simulate the toughening and softening behavior of FRC composites. The model predicts enhanced maximum strength and ductility of the composite before failure with increasing fiber content. A parametric study of the model and comparisons with experimental data showcases the various aspects of the model.

Original languageEnglish
Title of host publicationComputational Modelling of Concrete Structures - Proceedings of EURO-C 2014
PublisherTaylor and Francis - Balkema
Pages327-332
Number of pages6
ISBN (Print)9781138026414
DOIs
StatePublished - 2014
Externally publishedYes
EventEURO-C 2014 Conference - St. Anton am Arlberg, Austria
Duration: 24 Mar 201427 Mar 2014

Publication series

NameComputational Modelling of Concrete Structures - Proceedings of EURO-C 2014
Volume1

Conference

ConferenceEURO-C 2014 Conference
Country/TerritoryAustria
CitySt. Anton am Arlberg
Period24/03/1427/03/14

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