Numerical simulation of the three edge bearing test of steel fiber reinforced concrete pipes

Historically, steel has been the material chosen to improve the tensile behaviour of concrete. Nowadays, the trending of replacing the traditional reinforcement bars with short and slender fibers randomly distributed in the mass concrete, is growing. This composite material made essentially of common...

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Autores principales: Ferrado, Facundo Luis, Escalante, Mario Raúl, Rougier, Viviana Carolina
Formato: Documento de conferencia publisherVersion
Lenguaje:Inglés
Inglés
Publicado: Asociación Argentina de Mecánica Computacional 2021
Materias:
Acceso en línea:https://cimec.org.ar/ojs/index.php/mc/issue/view/857
http://hdl.handle.net/20.500.12272/4864
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id I68-R174-20.500.12272-4864
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
Inglés
topic Concrete pipes
SFRC
Plasticity
Nonlineality material
spellingShingle Concrete pipes
SFRC
Plasticity
Nonlineality material
Ferrado, Facundo Luis
Escalante, Mario Raúl
Rougier, Viviana Carolina
Numerical simulation of the three edge bearing test of steel fiber reinforced concrete pipes
topic_facet Concrete pipes
SFRC
Plasticity
Nonlineality material
description Historically, steel has been the material chosen to improve the tensile behaviour of concrete. Nowadays, the trending of replacing the traditional reinforcement bars with short and slender fibers randomly distributed in the mass concrete, is growing. This composite material made essentially of common concrete reinforced with discrete fibers is called steel fiber reinforced concrete(SFRC). In this work the mechanical behaviour of SFRC pipes is studied, simulating the diametral compression test called three edge bearing test by means of a 2d model in plane strain state. The SFRC is considered as a homogeneous material and its behaviour is represented through some damage - plasticity model (concrete damage plasticity) which takes into account the progressive reduction in the values of the elastic constants due to plastic strain and damage by means of a stiffness degradation variable. The model assumes that the main two failure mechanisms of the concrete are tensile cracking and compressive crushing, thus, the tensile and compression response is characterized through differentiated uniaxial stress-strain curves. This representation, although simplified, captures the most important features of the concrete response. The equations are solved with a commercial computational package. In addition, and as an alternative for the same problem, a case is addressed in which the SFRC is considered as an equivalent homogeneous material too, although a coupled plastic-damaged model is used where the coupling between plasticity and damage is achieved through a simultaneous solution of the plastic and the damage problem. Finally is presented a modified coupled damaged plasticity model that comes from a modification of the LublinerOller yield criterion from the adoption of a yield function of second degree in the components of the stress tensor. For the coupled damage plasticity the contribution of the fibers is considered through the classic mixture theory according to it is performed a modification of the elastic constants depending on the volumetric contribution of the fibers. Here, the problem is solved using the non-linear finite elements code PLastic Crack dynamic (PLCd) The validity of the numerical tool is performed comparing the results of the simulation with experimental data existing in the literature.
format Documento de conferencia
publisherVersion
author Ferrado, Facundo Luis
Escalante, Mario Raúl
Rougier, Viviana Carolina
author_facet Ferrado, Facundo Luis
Escalante, Mario Raúl
Rougier, Viviana Carolina
author_sort Ferrado, Facundo Luis
title Numerical simulation of the three edge bearing test of steel fiber reinforced concrete pipes
title_short Numerical simulation of the three edge bearing test of steel fiber reinforced concrete pipes
title_full Numerical simulation of the three edge bearing test of steel fiber reinforced concrete pipes
title_fullStr Numerical simulation of the three edge bearing test of steel fiber reinforced concrete pipes
title_full_unstemmed Numerical simulation of the three edge bearing test of steel fiber reinforced concrete pipes
title_sort numerical simulation of the three edge bearing test of steel fiber reinforced concrete pipes
publisher Asociación Argentina de Mecánica Computacional
publishDate 2021
url https://cimec.org.ar/ojs/index.php/mc/issue/view/857
http://hdl.handle.net/20.500.12272/4864
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