Contact Mechanics
Mostrando 1-12 de 38 artigos, teses e dissertações.
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1. Sociodemographic and clinical profile of patients with occupational contact dermatitis seen at a work-related dermatology service, 2000 - 2014
Abstract: BACKGROUND: Occupational dermatoses are common, especially contact dermatitis. Epidemiological studies on these dermatoses are scarce in Brazil and they are necessary as part of the public policy to protect workers' health. OBJECTIVES: To identify sociodemographic and clinical profile of patients with occupational contact dermatitis seen between
An. Bras. Dermatol.. Publicado em: 09/05/2019
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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. A New Buffer in Impact Reduction for Aerospace Applications
Abstract The aim of this paper is to introduce a new buffering mechanism in impact reduction during assembly process of two space vehicles. Probe-cone mechanism, due to its computational easiness, is employed to study impact interaction between multibody systems. The proposed buffer with a compact structure includes a probe equipped with axial and torsional
Lat. Am. j. solids struct.. Publicado em: 14/06/2018
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4. Influence of basal plane domains in the tribological behavior of graphites
ABSTRACT Many dynamic engineering systems have interferences and interactions that causes wear under friction effect. Carbonaceous materials, such as polycrystalline graphites, are of great interest in engineering systems due to their inherent lubricant properties and their versatility as a material for applications in the areas of mechanics, transportation,
Matéria (Rio J.). Publicado em: 2016-09
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5. Male and female runners demonstrate different sagittal plane mechanics as a function of static hamstring flexibility
ABSTRACTBackground:Injuries to runners are common. However, there are many potential contributing factors to injury. While lack of flexibility alone is commonly related to injury, there are clear differences in hamstring flexibility between males and females.Objective: To compare the effect of static hamstring length on sagittal plane mechanics between male
Braz. J. Phys. Ther.. Publicado em: 06/10/2015
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6. Comportamento crítico da produção de entropia em modelos com dinâmicas estocásticas competitivas / Critical behavior of entropy production in models with competitive stochastic dynamics
We study kinetic phase transitions and the critical behavior of the entropy production in spin models with nearest neighbor interactions subject to two Glauber dynamics, which simulate two thermal baths at different temperatures. In this way, it is assumed that the system corresponds to a continuous time Markov process which obeys the master equation. Thus,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/04/2011
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7. O papel do código estereoquímico e das flutuações térmicas locais no processo de folding de proteínas / The role of stereochemical code and local thermal fluctuation in the protein folding process
O problema do folding de proteínas tem sido investigado intensamente há mais de sessenta anos. Entretanto ainda não é encontrado na literatura um modelo que seja capaz de explicar plenamente qual é o mecanismo responsável pelo processo de folding. Neste contexto, a presente tese de doutorado é uma proposta minimalista para investigar o papel de um có
Publicado em: 2011
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8. Comportamento crítico do processo de contato aperiódico: simulações e grupo de renormalização / Critical behavior of the aperiodic contact process: simulation and renormalization-group
Utilizamos um formalismo de operadores e a técnica de grupo de renormalizacao de Dasgupta, Ma e Hu para analisar o efeito de distribuições inomogêneas dos parâmetros sobre o comportamento crítico de um modelo estocástico simples. O processo de contato em uma dimensão constitui talvez o modelo mais simples que apresenta uma transição de fase para um
Publicado em: 2010
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9. Structural model with contact between pulmonary alveolus walls. / Modelo estrutural com contato entre paredes de alvéolo pulmonar.
This work is an important step on the development of a computational model of lung parenchyma capable to simulate mechanical ventilation maneuveres. The lung has a complex and hierarchized structure. Therefore a multidisciplinary literature review was held. The review presents the mechanical properties of the parenchyma, its morphology and the effects of sur
Publicado em: 2010
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10. Applied mechanics of the Puricelli osteotomy : a linear elastic analysis with the finite element method
Background: Surgical orthopedic treatment of the mandible depends on the development of techniques resulting in adequate healing processes. In a new technical and conceptual alternative recently introduced by Puricelli, osteotomy is performed in a more distal region, next to the mental foramen. The method results in an increased area of bone contact, resulti
Publicado em: 2010
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11. 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
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12. Modelo dinamico para o contato em mancais de elementos rolantes sujeito a lubrificação elastohidrodinamica / Dynamic model for the contact in rolling element bearings under elastohydrodynamic lubrification
With the need of time reduction on mechanical projects, the use of computational models for the analysis of mechanical components becomes mandatory in order to avoid excessive physical tests. Based on this assumption, is necessary to study the dynamic of previously assumed rigid components, as the rolling elements bearings, and thus knowing its influence on
Publicado em: 2009