<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792014000400283</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modelos constitutivos drucker prager extendido y drucker prager modificado para suelos rhodic ferralsol]]></article-title>
<article-title xml:lang="en"><![CDATA[Validation of the extended drucker prager and modified drucker prager constitutive models for a rhodic ferralsol soil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Cueto]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera Suárez]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Iglesias Coronel]]></surname>
<given-names><![CDATA[Ciro E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Bravo]]></surname>
<given-names><![CDATA[Elvis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central "Marta Abreu" de las Villas Fac. de Ciencias Agropecuarias Dpto. de Ingeniería Agrícola]]></institution>
<addr-line><![CDATA[Villa Clara ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Agraria de La Habana Fac. de Ciencias Técnicas Centro de Mecanización Agropecuaria]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2014</year>
</pub-date>
<volume>32</volume>
<numero>4</numero>
<fpage>283</fpage>
<lpage>290</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792014000400283&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792014000400283&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792014000400283&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[La aplicación del Método de Elementos Finitos (MEF) a la solución de problemas de compactación del suelo, para las condiciones tropicales, necesita de modelos constitutivos validados para estos tipos de suelos. El objetivo del presente trabajo fue validar los modelos constitutivos Drucker Prager Extendido (DPE) y Drucker Prager Modificado (DPM) para un suelo Rhodic Ferralsol. La metodología empleada incluyó el desarrollo, en el software Abaqus/Standard 6.8-1, de un modelo en MEF que simula un ensayo triaxial, a partir del cual se predijo la curva esfuerzo-deformación del suelo. Las propiedades del material se representaron con los modelos constitutivos DPE y DPM. Para la validación de los modelos se realizaron ensayos triaxiales a probetas remoldeadas del suelo objeto de estudio. Los estadísticos de Kolmogorov-Smirnov (P &lt; 0.05), demostraron el adecuado ajuste entre resultados experimentales y predicciones, cuando se utilizan los modelos constitutivos DPE y DPM para representar la respuesta mecánica del suelo Rhodic Ferralsol, tanto en condiciones de falla frágil como plástica. Los resultados validan ambos modelos constitutivos para su empleo como modelos del material en la implementación del MEF a la solución de problemas de compactación del suelo. El modelo DPE demanda menor capacidad computacional, requiere menor cantidad de parámetros constitutivos y estos se puedan obtener con el equipamiento tradicionalmente disponible en los laboratorios de mecánica de suelos, lo cual lo hace más asequible para su utilización.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The application of the Finite Elements Method (FEM) to the solution of soil compaction problems needs constitutive models validated for soils in tropical conditions. This research was carried out with the objective of validating the Extended Drucker Prager (DPE) and Modified Drucker Prager (DPM) constitutive models in a Rhodic Ferralsol soil. The methodology used included the development, in software Abaqus/Standard 6.8-1, of a model in FEM that simulates a triaxial test, from which the stress-strain curve of the soil was predicted. The material properties were represented with the DPE and DPM constitutive models. For model validation, triaxial tests on remolded specimens of the target soil were conducted. The statistics of Kolmogorov-Smirnov (P &lt; 0.05) show the appropriate adjustment between experimental results and predictions, when the DPE and DPM constitutive models are used to represent the mechanical response of a Rhodic Ferralsol soil, under conditions of both brittle and plastic failure. These results validate both constitutive models for their use as material models in the implementation of the FEM in the solution of soil compaction problems. The DPE model demands less computational power and requires fewer constitutive parameters, and these can be obtained with the equipment traditionally available in the laboratories of soil mechanics, which makes its use more affordable.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[método de elementos finitos]]></kwd>
<kwd lng="es"><![CDATA[ensayo triaxial]]></kwd>
<kwd lng="es"><![CDATA[calibración matemática]]></kwd>
<kwd lng="es"><![CDATA[Abaqus]]></kwd>
<kwd lng="en"><![CDATA[finite element method]]></kwd>
<kwd lng="en"><![CDATA[triaxial test]]></kwd>
<kwd lng="en"><![CDATA[math calibration]]></kwd>
<kwd lng="en"><![CDATA[Abaqus]]></kwd>
</kwd-group>
</article-meta>
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