<?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>2071-0054</journal-id>
<journal-title><![CDATA[Revista Ciencias Técnicas Agropecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cie Téc Agr]]></abbrev-journal-title>
<issn>2071-0054</issn>
<publisher>
<publisher-name><![CDATA[Universidad Agraria de La Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2071-00542019000400004</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Model of Soil -TillageTool Interaction Using Finite Element Method]]></article-title>
<article-title xml:lang="es"><![CDATA[Modelo de la interacción suelo herramienta de labranza estrecha utilizando el Método de Elementos Finitos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marín Cabrera]]></surname>
<given-names><![CDATA[Luis Orlando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García de la Figal Costales]]></surname>
<given-names><![CDATA[Armando Eloy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Agraria de La Habana Facultad de Ciencias Técnicas Centro de Mecanización Agropecuaria]]></institution>
<addr-line><![CDATA[San José de las Lajas Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>28</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2071-00542019000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2071-00542019000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2071-00542019000400004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Most of the soil-tillage tool interaction studies realized, both, experimental and numeric, have shown the influence of soil conditions (physical, mechanical and dynamic properties and type of soil), operation parameters of the tool (cutting deep, cutting speed, acceleration) and geometry in the magnitude of cutting forces. Those studies were carried out with little tool sliding to avoid distortion, which can cause convergence problems during the simulation. In this study, a three-dynamic (3D) lineal simulation model of soil narrow tool interaction was developed by the Finite Element Method (FEM) to analyze the tillage tool movement across a silt clay soil block (Ferrallitic). The extended Drucker&#727;Prager elastoplastic constitutive relation model was used to model, which was accomplished using the Solid Works design software, 2014 version and its complement Simulation. For a better connection between soil and tillage tool surfaces, and to achieve good soil elements movement on the tool surface, contact elements and Coulomb theorem were used. The model predicted the soil movement, soil fault surfaces, stresses distribution, both, in soil and tillage tool, as well as the draft forces. The results of the simulation model were compared with models and experimental data of the other authors, and good estimates and trends were obtained.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La mayor parte de los estudios de la interacción suelo&#727;herramienta de labranza realizados, tanto experimentales como numéricos, han mostrado la influencia de las condiciones del suelo (propiedades físicas, mecánicas y dinámicas, tipo de suelo), parámetros de operación de la herramienta (profundidad de corte, velocidad de corte, aceleración) y geometría de la misma en la magnitud de las fuerzas de corte. Los mismos se han llevado a cabo con pequeños deslizamientos de la herramienta para evitar la distorsión, lo cual puede provocar problemas de convergencia durante la simulación. En este estudio, un modelo de simulación tridimensional (3D) lineal dinámico de la interacción suelo&#727;herramienta de labranza estrecha ha sido desarrollado mediante el método de elementos finitos (MEF) para analizar el movimiento de la herramienta de cultivo a través de un bloque de suelo tipo arcilloso limoso (ferralítico).Se utilizó el modelo elastoplástico de relación constitutiva(Drucker&#727;Prager)para la modelación, la cual fue realizada utilizando el software de diseño Solid Works, versión 2014y su complemento Simulation. Para una mejor conexión entre las superficies, tanto del suelo como de la herramienta de cultivo, fueron utilizados elementos de contacto y el teorema de Coulomb para lograr buen movimiento de los elementos del suelo sobre la superficie de trabajo de la herramienta. El modelo predijo el movimiento del suelo, las superficies de falla del mismo, distribución de tensiones tanto en el suelo como en la herramienta de cultivo, así como las fuerzas de corte. Se compararon los resultados del modelo de simulación con otros modelos y datos experimentales de otros autores, obteniéndose buenas predicciones y similares tendencias.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[3D dynamic simulation model]]></kwd>
<kwd lng="en"><![CDATA[soil-tool interaction]]></kwd>
<kwd lng="en"><![CDATA[finite elements]]></kwd>
<kwd lng="es"><![CDATA[Modelo de simulación dinámico 3D]]></kwd>
<kwd lng="es"><![CDATA[interacción suelo&#727; herramienta]]></kwd>
<kwd lng="es"><![CDATA[elementos finitos]]></kwd>
</kwd-group>
</article-meta>
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