<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-3011</journal-id>
<journal-title><![CDATA[Concreto y cemento. Investigación y desarrollo]]></journal-title>
<abbrev-journal-title><![CDATA[Concr. cem. investig. desarro]]></abbrev-journal-title>
<issn>2007-3011</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano del Cemento y del Concreto A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-30112016000100035</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Criterios de falla para modelado de elementos de concreto sin refuerzo]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Juárez-Luna]]></surname>
<given-names><![CDATA[Gelacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández García]]></surname>
<given-names><![CDATA[Daniel A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>2</numero>
<fpage>35</fpage>
<lpage>59</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-30112016000100035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-30112016000100035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-30112016000100035&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se formulan e implantan modelos de daño con distintas normas de falla para modelar elementos estructurales en su evolución al colapso. La formulación de los modelos de daño con superficie de falla sólo tensión y sólo cortante se desarrolló a partir de un modelo de daño isotrópico igual tensión-compresión. Estos modelos constitutivos se implantaron en subrutinas programadas en Fortran. Se presentan ejemplos numéricos que validan los modelos de daño formulados para modelar elementos al colapso.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Damage models with different failure norms for modeling structural elements in their evolution to collapse were formulated and implemented. The formulation of the damage models with failure surfaces only tension and only shear were developed based on the isotropic damage model equal tension-compression. These constitutive models were implanted into subroutines programed in Fortran. Numerical examples were presented, showing the validation of the formulated damage models for modeling elements to collapse.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Se formulam e implementam modelos de falhas com diferentes normas de falhas para a modelagem de elementos estruturais na sua evolução ao colapso. A formulação dos modelos de falha com superfícies de falha única à tensão e só a cisalhamento foi desenvolvida com base no modelo de falha isotrópico igual tensão-compressão. Estes modelos constitutivos foram implantados em sub-rotinas programadas em Fortran. Presentam-se exemplos numéricos, mostrando a validação dos modelos de falha formulados para a modelagem de elementos em colapso.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Colapso]]></kwd>
<kwd lng="es"><![CDATA[modelo de daño]]></kwd>
<kwd lng="es"><![CDATA[superficie de falla]]></kwd>
<kwd lng="es"><![CDATA[norma]]></kwd>
<kwd lng="es"><![CDATA[ablandamiento]]></kwd>
<kwd lng="es"><![CDATA[elementos finitos]]></kwd>
<kwd lng="en"><![CDATA[Collapse]]></kwd>
<kwd lng="en"><![CDATA[damage model]]></kwd>
<kwd lng="en"><![CDATA[failure surface]]></kwd>
<kwd lng="en"><![CDATA[norm]]></kwd>
<kwd lng="en"><![CDATA[softening]]></kwd>
<kwd lng="en"><![CDATA[finite element]]></kwd>
<kwd lng="pt"><![CDATA[Colapso]]></kwd>
<kwd lng="pt"><![CDATA[modelo de falha]]></kwd>
<kwd lng="pt"><![CDATA[superfície de falha]]></kwd>
<kwd lng="pt"><![CDATA[norma]]></kwd>
<kwd lng="pt"><![CDATA[abrandamento]]></kwd>
<kwd lng="pt"><![CDATA[elementos finitos]]></kwd>
</kwd-group>
</article-meta>
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