Galerkin
Mostrando 1-12 de 230 artigos, teses e dissertações.
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1. Variational Formulation and A Priori Estimates for the Galerkin Method for a Fractional Diffusion Equation
ABSTRACT In this work we obtain a variational formulation and a priori estimates for approximate solutions of a problem involving fractional diffusion equations.
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. Código Computacional Avançado para Análise de Fenômenos Físicos de Campo Escalar da Engenharia
RESUMO As equações diferenciais governam inúmeros fenômenos físicos presentes em diversos campos de conhecimento da física-matemática. Uma vez que os modelos são compreendidos pela teoria de campo escalar, possibilitam a descrição de uma gama de aplicações práticas da engenharia, transitando de problemas na área da acústica, térmica, mecânic
Trends in Computational and Applied Mathematics. Publicado em: 2022
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3. 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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4. Proposta de critério simplificado para estimar efeitos de segunda ordem em edifícios de concreto armado
Resumo Neste trabalho propõe-se um novo parâmetro simplificado para o cálculo dos efeitos globais de segunda ordem, a partir do Método de Galerkin via Resíduos Ponderados. O critério proposto foi analisado com base em 21 pórticos planos associados a pilar-parede, alcançando resultados que apresentam acurácia satisfatória com relação à análise g
Rev. IBRACON Estrut. Mater.. Publicado em: 2020-04
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5. Two-dimensional Boussinesq equations applied to channel flows: deducing and applying the equations
RESUMO Uma das hipóteses básicas adotada para a formulação teórica dos escoamentos de fluidos é a distribuição da pressão hidrostática na vertical. No entanto, muitos pesquisadores apontaram que essa simplificação pode levar a erros, em casos como o escoamento na ruptura de barragens. A discrepância entre a solução computacional e o experiment
RBRH. Publicado em: 25/04/2019
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6. Studying Torsional Vibration of a Micro-shaft in a Micro-scale Fluid Media based on Non-classical Theories
Abstract In this paper, torsional vibration of a micro-shaft in interacting with a micro-scale fluid media has been investigated. The presented mathematical model for this study is made up of a micro-shaft with one end fixed and a micro-cylinder at its free end which is immersed in a micro-scale fluid media. The micro-shaft can be actuated torsionally via ap
Lat. Am. j. solids struct.. Publicado em: 04/02/2019
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7. A numerical study on the aerodynamic performance of building cross-sections using corner modifications
Abstract A numerical investigation is performed in this work in order to evaluate the aerodynamic performance of building cross-section configurations by using corner modifications. The CAARC tall building model is utilized here as reference geometry, which is reshaped considering chamfered and recessed corners. The numerical scheme adopted in this work is p
Lat. Am. j. solids struct.. Publicado em: 30/07/2018
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8. Investigation of dynamic instability of three plates switch under step DC voltage actuation using modified couple stress theory
Abstract In this paper dynamical instability of three-layer micro-switch under DC voltage actuation has been studied. Recent studies have used the classical beam theory while leaving out the length scale parameter. In this paper dynamic behavior of the switch has been investigated based on couple stress theory and considering the length scale parameter. To t
Lat. Am. j. solids struct.. Publicado em: 10/07/2018
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9. An enriched meshless finite volume method for the modeling of material discontinuity problems in 2D elasticity
Abstract A 2D formulation for incorporating material discontinuities into the meshless finite volume method is proposed. In the proposed formulation, the moving least squares approximation space is enriched by local continuous functions that contain discontinuity in the first derivative at the location of the material interfaces. The formulation utilizes sp
Lat. Am. j. solids struct.. Publicado em: 26/04/2018
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10. A Stabilized Hybrid Discontinuous Galerkin Method for Nearly Incompressible Linear Elasticity Problem
RESUMO Neste trabalho, um método de elementos finitos híbrido primal para o problema de elasticidade linear quase incompressível em malhas triangulares é mostrado. Este método consiste no acomplamento de problemas de Galerkin descontínuos locais para a variável primal com um problema global para o multiplicador de Lagrange, o qual é identificado como
TEMA (São Carlos). Publicado em: 2017-12
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11. Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order Theory
Abstract In the present paper, an improved high-order theory is employed to study the free vibration of rotating truncated sandwich conical shells with laminated face sheets and a soft core. The formulation is based on a three-layer sandwich model. First-order shear deformation theory (FSDT) is used for face sheets and quadratic and cubic functions are assum
Lat. Am. j. solids struct.. Publicado em: 2017-12
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12. Simulation of species concentration distribution in reactive flows with unsteady boundary conditions
Abstract The determination of species concentration profiles in reactive flows with variable inlets is a problem of practical interest to many fields such as in flow reactor transient operation and in cyclic degradable pollutants disposals in watercourses. In these cases, the inflow condition often consists of a time-dependent function, which may imply unste
Braz. J. Chem. Eng.. Publicado em: 2017-10