Galerkin Methods
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. Meshless Methods for Computation of Overhead Transmission Lines Electromagnetic Fields
Abstract The meshless element-free Galerkin method (EFGM) is used to solve partial differential equations responsible for obtaining the electromagnetic fields generated by a transmission line. For this purpose, a 2D model based in a real transmission line is constructed and simulated. The results obtained by EFGM have good accuracy and they are compared agai
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-06
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2. Nonlinear Vibration Analysis of Euler-Bernoulli Beams by Using Continuous Galerkin-Petrov Time-Discretization Method
Abstract In this paper, we present a new numerical method for nonlinear vibrational analysis of Euler-Bernoulli beams. Our approach is based on the continuous Galerkin-Petrov time discretization method. The Euler-Bernoulli beam equation which governs its vibrations is transformed into set of ordinary differential equations and the presented method is employe
Lat. Am. j. solids struct.. Publicado em: 2017-09
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3. Analysis of Geometrically Nonlinear Vibrations of Functionally Graded Shallow Shells of a Complex Shape
Abstract Geometrically nonlinear vibrations of functionally graded shallow shells of complex planform are studied. The paper deals with a power-law distribution of the volume fraction of ceramics and metal through the thickness. The analysis is performed with the use of the R-functions theory and variational Ritz method. Moreover, the Bubnov-Galerkin and the
Lat. Am. j. solids struct.. Publicado em: 2017-09
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4. Imposition of Dirichlet Boundary Conditions in Element Free Galerkin Method through an Object-Oriented Implementation
Abstract One of the main drawbacks of Element Free Galerkin (EFG) method is its dependence on moving least square shape functions which don’t satisfy the Kronecker Delta property, so in this method it’s not possible to apply Dirichlet boundary conditions directly. The aim of the present paper is to discuss different aspects of three widely used methods o
Lat. Am. j. solids struct.. Publicado em: 2017-06
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5. Nonlinear Forced Vibration Analysis of Dielectric-Elastomer Based Micro-Beam with Considering Yeoh Hyper-Elastic Model
Abstract The present study investigates nonlinear forced vibration of dielectric elastomer-based micro-beam. The nonlinear terms in beam equation are geometric and material one. Geometric nonlinearity is considered by von-Karman strain displacement relationship and the material nonlinearity is modeled with Yeoh hyper-elastic model. Galerkin and Multiple scal
Lat. Am. j. solids struct.. Publicado em: 2017-03
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6. Deflection profile analysis of beams on two-parameter elastic subgrade
A procedure involving spectral Galerkin and integral transformation methods has been developed and applied to treat the problem of the dynamic deflections of beam structure resting on bi-parametric elastic subgrade and subjected to travelling loads. The case of the response to moving constant loads of this slender member is first investigated and a closed fo
Lat. Am. j. solids struct.. Publicado em: 2013-03
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7. Problemas dissipativos de vigas extensíveis com amortecimento não linear na fronteira
Neste trabalho estamos interessados na existência, unicidade e na taxa de decaimento de solução para problemas de vigas extensíveis com amortecimento não linear na fronteira acoplados a diferentes termos dissipativos. A existência das soluções são mostradas usando o Método de Galerkin e o decaimento exponencial das soluções, em ambos os casos, s�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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8. Um sistema de equações parabólicas de reação-difusão modelando quimiotaxia / A system of parabolic reaction-diffusion equations modeling chemotaxis
Analisamos um sistema não linear parabólico de reação-difusão com duas equações definidas em ]0,T[x ômega , (0
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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9. Os elementos finitos no estudo de eletromagnetismo utilizando os Software Gmsh/GetDP / The finite element method in electromagnetics study using the software Gmsh/GetDP
The aim of this master thesis is to study and develop two-dimensional and three-dimensional mathematical models, taking into account Maxwell s equations, the laws of material behavior and boundary conditions. Moreover, have discretization fields by finite element method using the Galerkin approach for electromagnetic analysis, and particularly problems of el
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/02/2012
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10. Modelagem de dispositivos eletromagnéticos através de métodos sem malha / Electromagnetic devices modeled by Meshless methods
Métodos sem malha constituem uma classe de métodos numéricos usualmente aplicados na solução de equações diferenciais parciais (PDE). A principal característica destes métodos é que os mesmos não necessitam de uma malha como a usada nos métodos de elementos finitos. Esta característica pode ser bastante útil quando se esta modelando estruturas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2011
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11. Indicadores de erros a posteriori na aproximação de funcionais de soluções de problemas elípticos no contexto do método Galerkin descontínuo hp-adaptivo / A posteriori error indicators in the approximation of functionals of elliptic problems solutions in the context of hp-adaptive discontinuous Galerkin method
In this work we study goal-oriented a posteriori error indicators for approximations by the discontinuous Galerkin method for the biharmonic and Poisson equations. The methodology used for the indicators is based on the dual problem associated with the functional, which is known to generate the most effective indicators. The two main error indicators based o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2011
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12. Modelagem computacional de problemas de espalhamento de ondas eletromagnéticas / Computational modeling of electromagnetic wave scattering problems
Esta tese tem por objetivo apresentar um estudo sistemático da resolução,em duas dimensões espaciais, de problemas de espalhamento de ondas eletromagnéticas por meios condutores e meios dielétricos homogêneos e heterogêneos, envolvendo fontes singulares, números de onda elevados e condições de contorno absorventes, modelados pela equação de Helm
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011