Galerkin
Mostrando 25-36 de 230 artigos, teses e dissertações.
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25. Nonlinear Dynamic Analysis of Telescopic Mechanism for Truss Structure Bridge Inspection Vehicle Under Pedestrian Excitation
Abstract Nonlinear dynamic analysis of an axially moving telescopic mechanism for truss structure bridge inspection vehicle under pedestrian excitation is carried out. A biomechanically inspired inverted-pendulum model is utilized to simplify the pedestrian. The nonlinear equations of motion for the beam-pedestrian system are derived using the Hamilton's pri
Lat. Am. j. solids struct.. Publicado em: 2016-06
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26. An Accurate Study on Capacitive Microphone with Circular Diaphragm Using a Higher Order Elasticity Theory
Abstract This study has been undertaken to investigate the mechanical behavior of the capacitive microphone with clamped circular diaphragm using modified couple stress theory in comparison to the classical one. Presence of the length scale parameter in modified couple stress theory provides the means to evaluate the size effect on the microphone mechanical
Lat. Am. j. solids struct.. Publicado em: 2016-04
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27. Vibration Analysis of a Magnetoelectroelastic Rectangular Plate Based on a Higher-Order Shear Deformation Theory
Abstract Free vibration of a magnetoelectroelastic rectangular plate is investigated based on the Reddy's third-order shear deformation theory. The plate rests on an elastic foundation and it is considered to have different boundary conditions. Gauss's laws for electrostatics and magnetostatics are used to model the electric and magnetic behavior. The partia
Lat. Am. j. solids struct.. Publicado em: 2016-03
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28. Application of Higher Order Hamiltonian Approach to the Nonlinear Vibration of Micro Electro Mechanical Systems
Abstract This paper implements the higher order Hamiltonian method to analyze an electrostatically actuated nonlinear micro beam-based micro electro mechanical oscillator. First, second and third approximate solutions are obtained, and the frequency responses of the system are compared with energy balance method solution and previously solved Variational App
Lat. Am. j. solids struct.. Publicado em: 2016-03
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29. Effect of Uniformly Distributed Tangential Follower Force on the Stability of Rotating Cantilever Tube Conveying Fluid
Abstract In this paper, the Euler-Bernoulli beam model is used to predict the structural instability of rotating cantilever tubes conveying fluid and subjected to uniform distributed tangential compressive load. The governing equation of motion and boundary conditions of the system are derived using the Hamilton's principle. Then, Galerkin method is applied
Lat. Am. j. solids struct.. Publicado em: 2016-02
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30. Assessment of Homotopy Perturbation Method for Study the Forced Nonlinear Vibration of Orthotropic Circular Plate on Elastic Foundation
Abstract In this paper the nonlinear forced vibration of an orthotropic circular plate resting on Winkler, Pasternak and nonlinear Winkler foundation is investigated. Plates with edges elastically restrained against rotation and inplane displacement are analyzed and the Von-Karman geometric nonlinear equations are employed. In this study it is assumed that t
Lat. Am. j. solids struct.. Publicado em: 2016-02
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31. Research on Free Vibration Frequency Characteristics of Rotating Functionally Graded Material Truncated Conical Shells with Eccentric Functionally Graded Material Stringer and Ring Stiffeners
Abstract In this research work, an exact analytical solution for frequency characteristics of the free vibration of rotating functionally graded material (FGM) truncated conical shells reinforced by eccentric FGM stringers and rings has been investigated by the displacement function method. Material properties of shell and stiffeners are assumed to be graded
Lat. Am. j. solids struct.. Publicado em: 2016
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32. O método de Galerkin para a quantização de sistemas Hamiltonianos
Apresentamos o método espectral de Galerkin como uma ferramenta para a quantização de sistemas hamiltonianos. Este método pode ser introduzido como um tópico em uma disciplina de introdução à mecânica quântica em um curso de graduação em física. Comparado ao método de diferenças finitas, o método espectral possibilita precisão muito maior, a
Rev. Bras. Ensino Fís.. Publicado em: 2015-12
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33. Thermal effects on the stability of circular graphene sheets via nonlocal continuum mechanics
Recently, graphene sheets have shown significant potential for environmental engineering applications such as wastewater treatment. Different non-classical theories have been used for modeling of such nano-sized systems to take account of the effect of small length scale. Among all size-dependent theories, the nonlocal elasticity theory has been commonly use
Lat. Am. j. solids struct.. Publicado em: 2014-08
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34. A study on the nonlinear stability of orthotropic single-layered graphene sheet based on nonlocal elasticity theory
Recently, graphene sheets have shown significant potential for environmental engineering applications such as wastewater treatment. In the present work, the posbuckling response of orthotropic single-layered graphene sheet (SLGS) is investigated in a closed-form analytical manner using the nonlocal theory of Eringen. Two opposite edges of the plate are subje
Lat. Am. j. solids struct.. Publicado em: 2014
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35. Formulações semi-discretas para a equação 1D de Burgers
Neste trabalho fizemos comparações entre formulações semi-discretas para a obtenção de soluções numéricas para a equação 1D de Burgers. As formulações consistem em discretizar o domínio temporal via métodos implícitos multi-estágios de segunda e quarta ordem: aproximantes de Padé R11 e R22; e o domínio espacial via métodos de elementos fi
TEMA (São Carlos). Publicado em: 2013-12
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36. Uma formulação hibridizada de elementos finitos para problemas parabólicos
Este trabalho trata da aplicação de um método de elementos finitos descontínuo hibridizado, combinado com aproximações de diferenças finitas para a variável temporal, visando a solução de problemas parabólicos. Tal proposta foi desenhada considerando-se uma aproximação espacial descontínua entre os elementos, com a continuidade ao longo das int
TEMA (São Carlos). Publicado em: 2013-12