Enriched Finite Elements
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. An Object-Oriented Class Organization for Global-Local Generalized Finite Element Method
Abstract This paper shows and discusses a generic implementation of the global-local analysis toward generalized finite element method (GFEMgl). This implementation, performed into an academic computational platform, follows the object-oriented approach presented by the authors in a previous work for the standard version of GFEM in which the shape functions
Lat. Am. j. solids struct.. Publicado em: 2016-12
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2. Structural dynamic analysis for time response of bars and trusses using the generalized finite element method
The Generalized Finite Element Method (GFEM) can be viewed as an extension of the Finite Element Method (FEM) where the approximation space is enriched by shape functions appropriately chosen. Many applications of the GFEM can be found in literature, mostly when some information about the solution is known a priori. This paper presents the application of the
Lat. Am. j. solids struct.. Publicado em: 2012-06
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3. The hybrid-Trefftz formulation with selective enrichment: application to two-dimensional problems in elasticity / Formulação híbrida-Trefftz com enriquecimento seletivo: aplicação a problemas bidimensionais da elasticidade
This work is inserted in the context of unconventional formulations in the finite elements method. Particularly, some aspects of the generalized finite elements method (GFEM) and the classic p-refinement are introduced in the well known hybrid-Trefftz stress formulation for the two dimensional elasticity. The presented formulation approximates two independen
Publicado em: 2008
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4. ELEMENTOS FINITOS ENRIQUECIDOS PARA FLAMBAGEM E VIBRAÇÃO DE PLACAS / ENRICHED FINITE ELEMENTS FOR BUCKLING AND VIBRATION OF SHELLS
The focus of the present work is to developand evaluate enriched elements used to obtain critical loads, frequencies of vibration and respective modes for two-dimensional structural components (rectangular plates in bending under inplane compressive loading). The Rayleigh-Ritz approximation method has been employed, directed to the use of conventional finite
Publicado em: 2007
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5. EVALUATION OF REFINED MODELS FOR INSTABILITY AND VIBRATION OF TWO-DIMENSIONAL STRUCTURE / AVALIAÇÃO DE MODELOS REFINADOS PARA INSTABILIDADE E VIBRAÇÕES DE ESTRUTURAS BIDIMENSIONAIS
This work consists in developing and evaluating classical of finite element models combined with additional polynomial functions, to obtain critical loads of instability and natural frequencies of plane structures, and respective modes. The objective is to search for a reliable technique to get estimates of localized deformations near to collapse. The Finite
Publicado em: 2007
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6. FORMULAÇÃO DE CASCAS ESPESSAS AXISSIMÉTRICAS UTILIZANDO ELEMENTOS FINITOS ENRIQUECIDOS / FORMULATION OF AXISYMMETRIC THICK SHELLS EMPLOYING ENRICHED FINITE ELEMENTS
This work presents an element formulation for the analysis of axisymmetric thick shells under pressure and line loads using Enriched Finite Element technique. Axial and radial displacement fields are considered in the formulation under the conditions of zero stresses at internal and external surfaces of the shell and, a combination of analitical solutions fo
Publicado em: 2004
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7. UM MÉTODO ROBUSTO DE ELEMENTOS FINITOS GENERALIZADOS APLICADO À MECÂNICA DA FRATURA / A ROBUST GENERALIZED FINITE ELEMENT METHOD APPLIED TO FRACTURE MECHANICS
The Finite Element Method is certainly the most generally used technique for the solution of Engineering problems. However, there are some classes of problems in which the method is still not straightly applicable. One of those is related to the simulation of problems with moveable geometry and/or boundary conditions, in the field of Computation Mechanics. T
Publicado em: 2004