Boundary Elements Methods
Mostrando 1-12 de 47 artigos, teses e dissertações.
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1. Contact phenomena modeling in biological structures on the example of the implant-bone
Abstract The work presents modeling of interface phenomena in biological structures. Selected ways of numerical modeling of phenomena at the boundary of two materials by means of FEM methods are discussed. The work focuses on phenomena related to biological structures and their mutual interactions. Using an example of an implant-bone system, various techniqu
Lat. Am. j. solids struct.. Publicado em: 14/03/2019
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2. Parametric Modal Dynamic Analysis of Steel-Concrete Composite Beams with Deformable Shear Connection
Abstract Composite structural elements of steel-concrete began to be used only in 1960 after the development of methods and constructive dispositions that ensured the functionality of these two materials together. In order to verify the importance of the participation of the axial mode in the frequency spectrum of the free vibration problem in composite beam
Lat. Am. j. solids struct.. Publicado em: 2017-02
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3. Time-Domain Three Dimensional BE-FE Method for Transient Response of Floating Structures Under Unsteady Loads
Abstract This paper presents a direct time-domain three dimensional (3D) numerical procedure to simulate the transient response of very large floating structures (VLFS) subjected to unsteady external loads as well as moving mass. The proposed procedure employs the Boundary Element and Finite Element methods (FEM-BEM). The floating structure and the surroundi
Lat. Am. j. solids struct.. Publicado em: 2016-07
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4. Investigation on Void Effect on Shear Stress Field in Bonded Stepped-Lap Joint
Abstract In this paper, an adhesively-bonded stepped-lap joint suffering from a void within its adhesive layer is investigated. The void separates the layer into two sections. The joint is under tensile load and materials are isotropic and assumed to behave as linear elastic. Classical elasticity theory is used to determine shear stress distribution in the s
Lat. Am. j. solids struct.. Publicado em: 2016-02
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5. Investigation on the optimal simplified model of BIW structure using FEM
Abstract At conceptual phases of designing a vehicle, engineers need simplified models to examine the structural and functional characteristics and apply custom modifications for achieving the best vehicle design. Using detailed finite-element (FE) model of the vehicle at early steps can be very conducive; however, the drawbacks of being excessively time-con
Lat. Am. j. solids struct.. Publicado em: 2015-10
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6. 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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7. Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis
OBJECTIVES: The non-homogenous aspect of periodontal ligament (PDL) has been examined using finite element analysis (FEA) to better simulate PDL behavior. The aim of this study was to assess, by 2-D FEA, the influence of non-homogenous PDL on the stress distribution when the free-end saddle removable partial denture (RPD) is partially supported by an osseoin
Journal of Applied Oral Science. Publicado em: 2012-06
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8. Vibration analysis of stiffened plates using finite element method
This paper presents the vibration analysis of stiffened plates, using both conventional and super finite element methods. Mindlin plate and Timoshenko beam theories are utilized so as to formulate the plate and stiffeners, respectively. Eccentricity of the stiffeners is considered and they are not limited to be placed on nodal lines. Therefore, any configura
Latin American Journal of Solids and Structures. Publicado em: 2012
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9. THE HYBRID BOUNDARY ELEMENT METHOD BASED ON GENERALIZED WESTERGAARD STRESS FUNCTIONS / O MÉTODO HÍBRIDO DOS ELEMENTOS DE CONTORNO COM BASE EM FUNÇÕES DE TENSÃO DE WESTERGAARD GENERALIZADAS
A particular implementation of the hybrid boundary element method is presented for the two dimensional analysis of potential and elasticity problems, which although general in concept, is suited for fracture mechanics applications. Generalized Westergaard stress functions, as proposed by Tada et al in 1993, are used as the problem¿s fundamental solutions. T
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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10. VISUALIZATION OF THE BOUNDARY BETWEEN FLUIDS USING THE SPH METHOD AND THE MARCHING CUBES ALGORITHM / VISUALIZAÇÃO DA FRONTEIRA ENTRE FLUIDOS UTILIZANDO O MÉTODO SPH E O ALGORITMO DE MARCHING CUBES
In engineering and special effects for film and television, fluid modeling is frequently used to simulate natural phenomena, such as fire, explosions, smoke, water, and air. Basically, this modeling uses mesh-based methods, such as finite volumes and finite elements, or mesh-free methods based on particles, such as MPS and SPH. A common question among partic
Publicado em: 2009
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11. Métodos de Elementos Finitos e Diferenças Finitas para o Problema de Helmholtz / Finite Elements and Finite Difference Methods for the Helmholtz Equation
It is well known that classical finite elements or finite difference methods for Helmholtz problem present pollution effects that can severely deteriorate the quality of the approximate solution. To control pollution effects is especially difficult on non uniform meshes. For uniform meshes of square elements pollution effects can be minimized with the Quasi
Publicado em: 2009
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12. On numerical solution strategies of contact problems / Sobre estratégias de resolução numérica de problemas de contato
Contact problems represent a class of solid mechanics problems for which the nonlinear behavior is caused by the change of the boundary conditions during the solution process. The present work treats contact problems observing aspects of its formulation and numerical implementation. Specifically, the formulation for two different contact elements is presente
Publicado em: 2009