Continuum Mechanics
Mostrando 1-12 de 43 artigos, teses e dissertações.
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1. Boundary Layer Effects in a Finite Linearly Elastic Peridynamic Bar
Abstract The peridynamic theory is an extension of the classical continuum mechanics theory. The peridynamic governing equations involve integrals of interaction forces between near particles separated by finite distances. These forces depend upon the relative displacements between material points within a body. On the other hand, the classical governing equ
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
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2. Numerical modeling of contact problems with the finite element method utilizing a B-Spline surface for contact surface smoothing
Abstract The basic aim of this work is to present a method to treat structural mechanics problems dealing with tridimensional contact and large elastic deformations. The formulation presented in this article offers a B-Spline based discretization for the contact surface, which solves the continuity problems presented by the classic Lagrangian contact element
Lat. Am. j. solids struct.. Publicado em: 23/07/2018
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3. Study of friction stir spot welding on AA6063 aluminium alloy used in the ship building industry
ABSTRACT Friction stir spot welding (FSSW) is a novel process of metal joining. In the present work, the authors analysed the possibility of using this process to solve current problems in shipbuilding industry regarding small vessels by replacing the current arc welding techniques with the aforementioned process. Numerical simulation was carried out by the
Matéria (Rio J.). Publicado em: 19/07/2018
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4. The Search for the Centre of Resistance of a Tooth Using a Finite Element Model and the Continuum Mechanics
Abstract In orthodontics, the CR is defined as the ideal point for the positioning of the bracket. This paper presents numerical analyses of a premolar tooth, which aim at searching the centre of resistance (CR) by applying several external torques. We built the geometry of the tooth by making a tomographic renderisation with the software MIMICS. The numeric
Lat. Am. j. solids struct.. Publicado em: 14/06/2018
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5. On the Decreasing Flexural Modulus of Glass/Vinylester Composite Beams Up to Failure State
Abstract The comparison of the failure state for composite laminates under bending and tensile loads is a well-known issue which has been intensively discussed in the literature. The scope of the current work is to investigate the appropriate method of the flexural modulus of the composite laminates by the aid of experimental and numerical approach. The prim
Lat. Am. j. solids struct.. Publicado em: 2017-08
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6. A Study on Equivalent Spherical Structure of Buckyball-C 60 Based on Continuum Shell Model
Abstract The main goal of this research is to extract a suitable continuum modeling of buckyball-C60. For this purpose, firstly the lattice structure of buckyball-C60 is modelled and subsequently a spherical structure equivalent to fullerene structure is considered. The fullerene structure modeled with shell elements is under internal pressure and in the con
Lat. Am. j. solids struct.. Publicado em: 2016-05
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7. A Note on the Inverse Reconstruction of Residual Fields in Surface Peened Plates
Abstract A modified stress function approach is developed here to reconstruct induced stress, residual stress and eigenstrain fields from limited experimental measurements. The present approach is successfully applied to three experimental measurements set in surface peened plates with shallow shot peening affected zone. The well-rehearsed advantage of the p
Lat. Am. j. solids struct.. Publicado em: 2015-12
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8. Load Bearing Capacity of a Dented Aluminum Pipe Subjected to Internal Pressure Considering the Effect of Ductile Damage
AbstractIn this paper, the effect of ductile damage on the behavior of a dented Aluminum pipe subjected to internal pressure is investigated. The plastic behavior of pipes under indentation is studied using continuum damage mechanics theory and the elastic-plastic finite element analysis. Finite element calculations are carried out using the damage plasticit
Lat. Am. j. solids struct.. Publicado em: 2015-04
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9. 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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10. Evaluating the influence of defects on the young's modulus of carbon nanotubes using stochastic modeling
The main goal of this research is to investigate the influence of structural defects on the mechanical properties of single-walled carbon nanotubes (CNTs). Two different types of the structural defects called Stone-Wales and vacancy defect are studied. While the former is categorized under the process-induced defect and it appears during the growth process o
Mat. Res.. Publicado em: 30/05/2014
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11. Hot tensile and creep rupture data extrapolation on 2.25Cr-1Mo steel using the CDM Penny-Kachanov methodology
Hot tensile and creep data were obtained for 2.25Cr-1Mo steel, ASTM A387 Gr.22CL2, at the temperatures of 500-550-600-650-700 °C. Using the concept of equivalence between hot tensile data and creep data, the results were analyzed according to the methodology based on Kachanov Continuum Damage Mechanics proposed by Penny, which suggests the possibility of us
Mat. Res.. Publicado em: 31/01/2014
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12. Size-dependent thermoelasticity
In this paper a consistent theory is developed for size-dependent thermoelasticity in heterogeneous anisotropic solids. This theory shows that the temperature change can create not only thermal strains, but also thermal mean curvatures in the solids. This formulation is based on the consistent size-dependent continuum mechanics in which the couple-stress ten
Lat. Am. j. solids struct.. Publicado em: 2014