Numerical Relations
Mostrando 1-12 de 65 artigos, teses e dissertações.
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1. BEHAVIORAL AND INFRACTIONAL ASPECTS OF FEMALE TEENAGERS DEPRIVED OF LIBERTY
RESUMO Objetivo: analisar aspectos comportamentais e infracionais de 26 adolescentes femininas em privação de liberdade. Método: estudo misto, descritivo, do tipo sequencial explanatório, realizado em um centro educacional no Nordeste do Brasil. Aplicou-se questionário contemplando variáveis sociodemográficas; ginecológico/obstétricas; comportame
Texto contexto - enferm.. Publicado em: 09/12/2019
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2. Estratégias, Representações e Flexibilidade na Resolução de Tarefas de Comparação Multiplicativa
Resumo Neste artigo analisamos, com base num quadro teórico sobre a comparação multiplicativa, a evolução conceituai de Bruno, aluno do 6.° ano (11 anos), focando-nos na articulação adaptativa e flexível de conceitos, estratégias, relações numéricas, propriedades das operações e representações. O modo como explora as cinco tarefas propostas
Bolema. Publicado em: 01/08/2019
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3. Numerical stress-life curves for the AISI 4340 steel using two sets of materials properties and different bi-axial stress ratios
Abstract Fatigue assessments by the more robust strain-based approach demand the determination of the local strain history from nominal stresses. For notched members, a cyclic constitutive relation, the stress concentration factor (SCF) and a strain concentration rule are used with this aim in some approximate solutions. The plastic part of the cyclic consti
Lat. Am. j. solids struct.. Publicado em: 29/10/2018
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4. Procedimientos Aritméticos en la Resolución de Problemas de Fenómenos Variacionales
Abstract From the mathematical process of elaboration, comparison and practice of procedures, one of the five general mathematics processes according to MEN (1998), we presented in this document, the findings of a research which objective was to characterize some of the difficulties faced by students solving problems involving the variational phenomena. The
Bolema. Publicado em: 2018-04
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5. Experimental and Numerical Investigation of the Dynamic Behavior of Clamped Thin Panel Subjected to Underwater Impulsive Loading
Abstract The dynamic response and failure mechanism of clamped thin aluminum alloy plates subjected to underwater impulsive loading are investigated by laboratory experiments and finite element (FE) simulations. The effects of plate thickness, impulsive loading and fluid-structure interaction on failure modes in clamped thin aluminum plates are comprehensive
Lat. Am. j. solids struct.. Publicado em: 2017-06
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6. A Timoshenko Piezoelectric Beam Finite Element with Consistent Performance Irrespective of Geometric and Material Configurations
Abstract The conventional Timoshenko piezoelectric beam finite elements based on First-order Shear Deformation Theory (FSDT) do not maintain the accuracy and convergence consistently over the applicable range of material and geometric properties. In these elements, the inaccuracy arises due to the induced potential effects in the transverse direction and ine
Lat. Am. j. solids struct.. Publicado em: 2016-05
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7. Fiber-matrix Contact Stress Analysis for Elastic 2D Composite Solids
AbstractThis paper presents a finite element formulation for the analysis of two dimensional reinforced elastic solids developing both small and large deformations without increasing the number of degrees of freedom. Fibers are spread inside the domain without the necessity of node coincidence. Contact stress analysis is carried out for both straight and cur
Lat. Am. j. solids struct.. Publicado em: 2015-03
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8. An efficient coupled polynomial interpolation scheme to eliminate material-locking in the Euler-Bernoulli piezoelectric beam finite element
The convergence characteristic of the conventional two-noded Euler-Bernoulli piezoelectric beam finite element depends on the configuration of the beam cross-section. The element shows slower convergence for the asymmetric material distribution in the beam cross-section due to 'material-locking' caused by extension-bending coupling. Hence, the use of convent
Lat. Am. j. solids struct.. Publicado em: 2015-01
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9. Diseño y predicción del funcionamiento de inyectores Venturi en riego localizado
The design and prediction performance of four Venturi injector prototypes have been studied using Computational Fluid Dynamics (CFD) techniques. Results were compared with experimental tests carried out in the laboratory of the Universitat Politècnica de València, Valencia, Spain. The analysed and selected geometries for each prototype were used to simulat
Rev. bras. eng. agríc. ambient.. Publicado em: 2014-12
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10. 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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11. A bending element for isotropic, multilayered and piezoelectric plates
In this paper, a new 12-node triangular element is developed for the analysis of composite plates. Moreover, the stress-strain relations of laminated bending plates, along with the characteristics of composite and piezoelectric materials have also been investigated. Following this, a finite element formulation for smart composite bending plates is proposed.
Lat. Am. j. solids struct.. Publicado em: 2013-03
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12. Geometrically non-linear analysis of inclined elastic rods subjected to self-weight
The behavior of inclined slender elastic rods subjected to axial forces and distributed load is discussed in this paper. Mathematical models and numerical solutions are developed for small and large displacements. A double-hinged boundary condition is assumed and the analysis is carried out for different values of non-dimensional weight (distributed load) an
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2012-03