<?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>1405-5546</journal-id>
<journal-title><![CDATA[Computación y Sistemas]]></journal-title>
<abbrev-journal-title><![CDATA[Comp. y Sist.]]></abbrev-journal-title>
<issn>1405-5546</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Centro de Investigación en Computación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-55462013000300002</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Parallel Processing Strategy for Solving the Thermal-Mechanical Coupled Problem Applied to a 4D System using the Finite Element Method]]></article-title>
<article-title xml:lang="es"><![CDATA[Estrategia de procesamiento paralelo para la solución del problema térmico-mecánico acoplado aplicado a un sistema 4D utilizando el método de elemento finito]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cardoso-Nungaray]]></surname>
<given-names><![CDATA[Victor E.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-Félix]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Botello-Rionda]]></surname>
<given-names><![CDATA[Salvador]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Centro de Investigación en Matemáticas  ]]></institution>
<addr-line><![CDATA[Guanajuato Gto]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2013</year>
</pub-date>
<volume>17</volume>
<numero>3</numero>
<fpage>289</fpage>
<lpage>298</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-55462013000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-55462013000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-55462013000300002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[We propose a high performance computing strategy (HPC) to simulate the deformation of a solid body through time as a consequence of the internal forces provoked by its temperature change, using the Finite Element Method (FEM). The program finds a solution of a multi-physics problem, solving the heat diffusion problem and the linear strain problem for homogeneous solids at each time step, exchanging information between both solutions to simulate the material distortion. The HPC strategy approach parallelizes vector and matrix operations as well as system equation solvers. The tests were realized over a model simulating a car braking system (a rotating disk velocity decreased by friction). Then we performed a quantitative analysis of stress, strain and temperature in some points of the geometry, and a qualitative analysis to show some visualizations of the simulation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Utilizando el Método de Elemento Finito (FEM), se propone una estrategia de cómputo de alto rendimiento (HPC) para simular dinámicamente la deformación causada por las fuerzas internas de un cuerpo sólido, como consecuencia del cambio de su temperatura. El programa resuelve un problema de multifísica, ya que da solución al problema de difusión de calor y al problema de deformación lineal de sólidos homogéneos para cada instante de tiempo, intercambiando información entre ambas soluciones para simular la distorsión del material. La estrategia de HPC consiste en paralelizar las operaciones matriciales y los algoritmos de solución de sistemas de ecuaciones. Las pruebas se realizaron en un modelo computarizado del sistema de frenado de un vehículo moderno (disminuir la velocidad de rotación de un disco a través de la fricción de un dispositivo de frenado). Después se realizó un análisis cuantitativo del estrés, de la deformación y de la temperatura en algunos puntos de la geometría, y un análisis cualitativo para mostrar las visualizaciones más ilustrativas del fenómeno.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Parallel computing]]></kwd>
<kwd lng="en"><![CDATA[HPC]]></kwd>
<kwd lng="en"><![CDATA[simulation]]></kwd>
<kwd lng="en"><![CDATA[FEM]]></kwd>
<kwd lng="en"><![CDATA[finite element]]></kwd>
<kwd lng="en"><![CDATA[thermal-mechanical coupled problem]]></kwd>
<kwd lng="en"><![CDATA[dynamic analysis]]></kwd>
<kwd lng="en"><![CDATA[heat distortion]]></kwd>
<kwd lng="es"><![CDATA[Cómputo paralelo]]></kwd>
<kwd lng="es"><![CDATA[simulación]]></kwd>
<kwd lng="es"><![CDATA[MEF]]></kwd>
<kwd lng="es"><![CDATA[elemento finito]]></kwd>
<kwd lng="es"><![CDATA[problema térmico/mecánico acoplado]]></kwd>
<kwd lng="es"><![CDATA[análisis dinámico]]></kwd>
<kwd lng="es"><![CDATA[calor]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Art&iacute;culos</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="4"><b>Parallel Processing Strategy for Solving the Thermal&#45;Mechanical Coupled Problem Applied to a 4D System using the Finite Element Method</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="3"><b>Estrategia de procesamiento paralelo para la soluci&oacute;n del problema t&eacute;rmico&#45;mec&aacute;nico acoplado aplicado a un sistema 4D utilizando el m&eacute;todo de elemento finito</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>Victor E. Cardoso&#45;Nungaray, Miguel Vargas&#45;F&eacute;lix, and Salvador Botello&#45;Rionda</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><i>Computational Sciences Department, Centro de Investigaci&oacute;n en Matem</i><i>&aacute;</i><i>ticas A.C., Jalisco S/N, Col. Valenciana, 36240, Guanajuato, Gto., Mexico</i><i>.</i> <a href="mailto:victorc@cimat.mx">victorc@cimat.mx</a>, <a href="mailto:miguelvargas@cimat.mx">miguelvargas@cimat.mx</a>, <a href="mailto:botello@cimat.mx">botello@cimat.mx</a></font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Article received on 10/02/2013;    <br> 	accepted on 20/07/2013.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">We propose a high performance computing strategy (HPC) to simulate the deformation of a solid body through time as a consequence of the internal forces provoked by its temperature change, using the Finite Element Method (FEM). The program finds a solution of a multi&#45;physics problem, solving the heat diffusion problem and the linear strain problem for homogeneous solids at each time step, exchanging information between both solutions to simulate the material distortion. The HPC strategy approach parallelizes vector and matrix operations as well as system equation solvers. The tests were realized over a model simulating a car braking system (a rotating disk velocity decreased by friction). Then we performed a quantitative analysis of stress, strain and temperature in some points of the geometry, and a qualitative analysis to show some visualizations of the simulation.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Parallel computing, HPC, simulation, FEM, finite element, thermal&#45;mechanical coupled problem, dynamic analysis, heat distortion.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Utilizando el M&eacute;todo de Elemento Finito (FEM), se propone una estrategia de c&oacute;mputo de alto rendimiento (HPC) para simular din&aacute;micamente la deformaci&oacute;n causada por las fuerzas internas de un cuerpo s&oacute;lido, como consecuencia del cambio de su temperatura. El programa resuelve un problema de multif&iacute;sica, ya que da soluci&oacute;n al problema de difusi&oacute;n de calor y al problema de deformaci&oacute;n lineal de s&oacute;lidos homog&eacute;neos para cada instante de tiempo, intercambiando informaci&oacute;n entre ambas soluciones para simular la distorsi&oacute;n del material. La estrategia de HPC consiste en paralelizar las operaciones matriciales y los algoritmos de soluci&oacute;n de sistemas de ecuaciones. Las pruebas se realizaron en un modelo computarizado del sistema de frenado de un veh&iacute;culo moderno (disminuir la velocidad de rotaci&oacute;n de un disco a trav&eacute;s de la fricci&oacute;n de un dispositivo de frenado). Despu&eacute;s se realiz&oacute; un an&aacute;lisis cuantitativo del estr&eacute;s, de la deformaci&oacute;n y de la temperatura en algunos puntos de la geometr&iacute;a, y un an&aacute;lisis cualitativo para mostrar las visualizaciones m&aacute;s ilustrativas del fen&oacute;meno.</font></p>      ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> C&oacute;mputo paralelo, simulaci&oacute;n, MEF, elemento finito, problema t&eacute;rmico/mec&aacute;nico acoplado, an&aacute;lisis din&aacute;mico, calor.</font></p>      <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/cys/v17n3/v17n3a2.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2"><b>1. Alizadeh, H. (2010).</b> <i>Simulation of Heat&#45;Induced Elastic Deformation of Cylindrical&#45;Shaped Bodies.</i> Master's thesis, Friedrich&#45;Alexander&#45;Universitat Erlangen&#45;Nurnberg.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061639&pid=S1405-5546201300030000200001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2"><b>2. Botello, S., Esqueda, H., Gomez, F., Moreles, M., &amp; Onate, E. (2004).</b> <i>M&oacute;dulo de aplicaciones del m&eacute;todo de los elementos finitos MEFI 1.0,</i> chapter Manual Te&oacute;rico. CIMAT &amp; CIMNE, 6&#45;69.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061641&pid=S1405-5546201300030000200002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2"><b>3. Botello, S., Moreles, M., &amp; Onate, E. (2009).</b> <i>Modulo de aplicaciones del m&eacute;todo de los elementos finitos para resolver la ecuaci&oacute;n de Poisson MEFIPOIS 1.0,</i> chapter Manual Te&oacute;rico. CIMAT &amp; CIMNE, 6&#45;69.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061643&pid=S1405-5546201300030000200003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      <!-- ref --><p align="justify"><font face="verdana" size="2"><b>4. Chapman, B., Jost, G., &amp; Van Der Pas, A. (2008).</b> <i>Using OpenMP. Portable Shared Memory Parallel Programming.</i> Massachusetts Institute of Technology.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061645&pid=S1405-5546201300030000200004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2"><b>5. Drepper, U. 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Pressure Cooker Press, 292&#45;299.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061649&pid=S1405-5546201300030000200006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2"><b>7. Lewis, R., Nithiarasu, P., &amp; Seetharamu, K. (2004).</b> <i>Fundamentals of the Finite Element Method for Heat and Fluid Flow,</i> chapter Transient Heat Conduction Analysis. John Wiley &amp; Sons, 150&#45;172.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061651&pid=S1405-5546201300030000200007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2"><b>8. Nocedal, J. &amp; Wright, S. (2006).</b> <i>Numerical Optimization, Second Edition,</i> chapter Conjugate Gradient Methods. Springer, 118&#45;120.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061653&pid=S1405-5546201300030000200008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2"><b>9. Saad, Y. 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Chapman &amp; Hall/CRC, 85&#45;102.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061657&pid=S1405-5546201300030000200010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2"><b>11. Wilson, J. (2007). </b>Thermal diffusivity. <a href="http://www.electronics-cooling.com/2007/08/thermal-diffusivity/" target="_blank">http://www.electronics&#45;cooling.com/2007/08/thermal&#45;diffusivity/</a><b>.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2061659&pid=S1405-5546201300030000200011&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></b></font></p>      ]]></body><back>
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