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Un método de regularización de mallas de elementos finitos en modelos tridimensionales sólidos

Authors: Amezua, Enrique; Hormaza, María V.; Avilés, Rafael;

Un método de regularización de mallas de elementos finitos en modelos tridimensionales sólidos

Abstract

La importancia que tiene en el análisis por elementos finitos la obtención de forma automática de una malla de calidad contrastada ha originado que en los últimos años se haya dedicado un gran esfuerzo al estudio del mallado adaptivo, de modo que se pueda corregir una malla a partir de la cuantificación de alguna magnitud representativa de la calidad de la misma, siguiendo algún esquema de refinado de malla. Lógicamente, los resultados de este proceso serán tanto más válidos cuanto mayor sea la calidad de la malla de partida. Este artículo expone un método de corrección de mallas de elementos finitos a partir de la modificación de las coordenadas de determinados nudos del mallado con el fin de obtener elementos con una relación de aspecto tan próxima a la unidad como sea posible. El método es completamente automático y aplicable a cualquier malla de elementos finitos correspondiente a un modelo 3D sólido, si bien su adaptación a otro tipo de modelos (por ejemplo, superficies o modelos planos) es imediata. El resultado es la obtención de una malla de mejor calidad, que puede utilizarse ventajosamente como punto de partida en un esquema de mallado adaptivo, dando lugar a resultados más aceptables.

The method here proposed for the correction of finite-element meshes is based on the modification of the coordinates of certain mesh nodes, the aim being to derive elements with an aspect relation as close as possible to unity. This entirely automatic method can be applied to any finite-element mesh corresponding to a 3-D solid model, while furthermore it is quickly adaptable to various other types, including plane models of surfaces. The outcome in each case is a mesh of higher quality, a sound basis for a self-adaptive mesh scheme and a promise of better results.

Peer Reviewed

Country
Spain
Keywords

Elements finits, Mètode dels -- Anàlisi numèrica, Numerical Methods, Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits, Elements finits, Mètode dels -- Anàlisi numèrica, :Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits [Àrees temàtiques de la UPC]

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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