<?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>2223-4861</journal-id>
<journal-title><![CDATA[Centro Azúcar]]></journal-title>
<abbrev-journal-title><![CDATA[cen. az.]]></abbrev-journal-title>
<issn>2223-4861</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2223-48612022000400035</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[CÁLCULO DEL FACTOR DE INTENSIDAD DE TENSIONES E INTEGRAL J EMPLEANDO LA SIMULACIÓN MEDIANTE ELEMENTOS FINITOS]]></article-title>
<article-title xml:lang="en"><![CDATA[STRESS INTENSITY FACTOR AND J INTEGRAL CALCULATION USING FINITE ELEMENT SIMULATION]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pozo Morejón]]></surname>
<given-names><![CDATA[Juan Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Duffus Scott]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad de Ingeniería Mecánica e Industrial Centro de Investigaciones de Soldadura (CIS)]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>49</volume>
<numero>4</numero>
<fpage>35</fpage>
<lpage>47</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612022000400035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612022000400035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612022000400035&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: El método elementos finitos ha ganado en popularidad para determinar los parámetros de mecánica de la fractura, pero este tipo de análisis numérico arriba a resultados precisos o no, en dependencia de la calidad del modelo y el procedimiento de implementación de los métodos establecidos.  Objetivo: Implementar y validar el cálculo del factor de intensidad de tensiones y la integral J a través de los métodos de extrapolación de desplazamientos, integral de dominio y de integral de interacción, mediante la modelación por elementos finitos de problemas de piezas fisuradas en 2D y 3D.  Materiales y Métodos: Se calcularon el factor de intensidad de tensiones y la integral J, en una probeta compacta fisurada y una placa con grieta semicircunferencial superficial, mediante modelos de elementos finitos en 2D y 3D y estos resultados se comprobaron respecto a los obtenidos mediante expresiones analíticas publicadas.  Resultados y Discusión: El error de los resultados que brindan los modelos de elementos finitos no supera el 3 % para los modelos bidimensionales y el 7 % para los tridimensionales, lo que demuestra su calidad y precisión.  Conclusiones: Se considera validada la implementación del cálculo de los parámetros de mecánica de la fractura, lo que posibilita extender en el futuro su empleo a construcciones y equipos que presenten agrietamiento en servicio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: The finite element method has become popular to determine fracture mechanics parameters, but this type of numerical analysis may or not lead to accurate results, depending on the model quality and the implementation of the established methods.  Objective: Implement and validate the calculation of the stress intensity factor and the J integral through the displacement extrapolation, domain integral and interaction integral methods, through finite element modeling of cracked part problems in 2D and 3D.  Materials and methods: The stress intensity factor and the integral J were calculated in a compact cracked specimen and a plate with a semi-circumferential surface crack, by means of 2D and 3D finite element models, and these results were verified with those obtained by means of published analytical expressions.  Results and Discussion: The error of the results provided by the finite element models does not exceed 3% for the two-dimensional models and 7% for the three-dimensional ones, which demonstrates their quality and precision.  Conclusions: The implementation of the calculation of the fracture mechanics parameters is considered validated, which makes it possible to extend its use in the future for constructions and equipment that present cracking in service.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[factor de intensidad de tensiones]]></kwd>
<kwd lng="es"><![CDATA[integral j]]></kwd>
<kwd lng="es"><![CDATA[mecánica de la fractura]]></kwd>
<kwd lng="es"><![CDATA[método de elementos finitos]]></kwd>
<kwd lng="en"><![CDATA[fracture mechanics]]></kwd>
<kwd lng="en"><![CDATA[j integral]]></kwd>
<kwd lng="en"><![CDATA[stress intensity factor]]></kwd>
<kwd lng="en"><![CDATA[finite element method]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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