Gfem
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Large deflection and initial instability analysis of anisotropic plates by the generalized finite element method
Abstract This paper presents investigations laminated plates under moderately large transverse displacements and initial instability, through the Generalized Finite Element Methods - GFEM. The von Kármán plate hypothesis are used along with Kirchhoff and Reissner-Mindlin kinematic plate bending models to approximate transverse displacements and critical bu
Lat. Am. j. solids struct.. Publicado em: 28/10/2019
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2. GFEM STABILIZATION TECHNIQUES APPLIED TO DYNAMIC ANALYSIS OF NON-UNIFORM SECTION BARS
Abstract The Finite Element Method (FEM), although widely used as an approximate solution method, has some limitations when applied in dynamic analysis. As the loads excite the high frequency and modes, the method may lose precision and accuracy. To improve the representation of these high-frequency modes, we can use the Generalized Finite Element Method (GF
Lat. Am. j. solids struct.. Publicado em: 29/10/2018
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3. Numerical experiments with the Generalized Finite Element Method based on a flat-top Partition of Unity
Abstract The Stable Generalized Finite Element Method (SGFEM) is essentially an improved version of the Generalized Finite Element Method (GFEM). Besides of retaining the good flexibility for constructing local enriched approximations, the SGFEM has the advantage of presenting much better conditioning than that of the conventional GFEM. Actually, bad conditi
Lat. Am. j. solids struct.. Publicado em: 29/10/2018
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4. Preface to the special issue of the International Symposium on Solid Mechanics (MecSol 2017)
Abstract The International Symposium on Solid Mechanics (MecSol) is a biennial conference which aims to provide a forum to discuss relevant issues associated with solid mechanics. The MecSol 2017 edition was held in the city of Joinville, Brazil, on 26-28 April 2017. Plenary lectures were delivered by researchers from five different countries. The main topic
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
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5. 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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6. The Splitting Method and the GFEMin the Two-Dimensional Analysis of Linear Elastic Domains with Multiple Cracks
Abstract The aim of this paper is to analyse two-dimensional linear elastic continuum containing multiple interacting cracks. Both the mechanical model and the numerical approach are addressed throughout the text as key concepts for the computational framework, whose main characteristics will be described. The Splitting Method is a decomposition method consi
Lat. Am. j. solids struct.. Publicado em: 2016
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7. Comparative Analysis of Ck- and C0-GFEM Applied to Two-dimensional Problems of Confined Plasticity
AbstractFor many practical applications in engineering, a complex structure shows linear elastic behavior over almost all its extension, but exhibits confined plasticity contained in some small critical regions, e.g. stress concentrations in fillets and sharp internal corners. The behavior of C0- and Ck-GFEM is investigated in this class of problems. The fir
Lat. Am. j. solids struct.. Publicado em: 2015-05
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8. Three dimensional Free Vibration and Transient Analysis of Two Directional Functionally Graded Thick Cylindrical Panels Under Impact Loading
AbstractIn this paper three dimensional free vibration and transient response of a cylindrical panel made of two directional functionally graded materials (2D-FGMs) based on three dimensional equations of elasticity and subjected to internal impact loading is considered. Material properties vary through both radial and axial directions continuously. The 3D g
Lat. Am. j. solids struct.. Publicado em: 2015-04
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9. An object-oriented class design for the generalized finite element method programming
The Generalized Finite Element Method (GFEM) is a numerical method based on the Finite Element Method (FEM), presenting as its main feature the possibility of improving the solution by means of local enrichment functions. In spite of its advantages, the method demands a complex data structure, which can be especially benefited by the Object-Oriented Programm
Lat. Am. j. solids struct.. Publicado em: 2013-11
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10. 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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11. Stabilized finite element methods in convenction-difusion problems / Métodos de elementos finitos estabilizados em problemas de convecção-difusão
Neste trabalho foram desenvolvidos e aplicados códigos computacionais baseados em métodos de elementos finitos estabilizados, principalmente, a versão de mínimos quadrados (LSFEM - Least Squares Finite Element Method) que leva a sistemas algébricos sempre simétricos e positivos definidos, independentemente dos sistemas de equações diferenciais parcia
Publicado em: 2010
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12. 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