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dc.contributor.author
Bergallo, Marta
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dc.contributor.author
Neuman, C.E.
dc.contributor.author
Sonzogni, Victorio Enrique
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dc.date.available
2017-11-08T14:31:03Z
dc.date.issued
2000-03
dc.identifier.citation
Bergallo, Marta; Neuman, C.E.; Sonzogni, Victorio Enrique; Composite mesh concept based FEM error estimation and solution improvement; Elsevier Science Sa; Computer Methods in Applied Mechanics and Engineering; 188; 3-2000; 755-774
dc.identifier.issn
0045-7825
dc.identifier.uri
http://hdl.handle.net/11336/27810
dc.description.abstract
The use of composite finite element models where meshes with different granularities are allowed to share the same problem domain, is introduced. The idea of this method was taken from the mixture theory of multiphase materials, where the properties of each component enter into the formulation affected by a participation factor. The different behaviors of each component mesh due to differences in the model accuracy rather than to the material properties.
We perform estimation of local and global errors for some problems in planar domains that are drawn from engineering problems (structural elastic deformations or heat and mass transfer in catalytic chemical reactors). The main examples in this work are elliptic problems with boundary conditions of Dirichlet, Neumann, and mixed types. The method is not restricted to 2D, being also applicable to 3D problems. In this paper, we also develop the use of composite models with the target of improving the numerical solution of finite element models. By using extrapolation-like concepts, improved solutions may be obtained without increasing the computational cost of the problem or requiring postprocessing of the results. Some examples are shown for which exact solution is available in order to validate the method.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Finite Element
dc.subject
Error Estimation
dc.subject
Composite Mesh
dc.subject.classification
Matemática Pura
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dc.subject.classification
Matemáticas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Composite mesh concept based FEM error estimation and solution improvement
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-11-03T20:27:37Z
dc.journal.volume
188
dc.journal.pagination
755-774
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Bergallo, Marta. Universidad Nacional del Litoral; Argentina
dc.description.fil
Fil: Neuman, C.E.. Universidad Nacional del Litoral; Argentina
dc.description.fil
Fil: Sonzogni, Victorio Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.journal.title
Computer Methods in Applied Mechanics and Engineering
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/S0045-7825(99)00360-6
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