Anisotropic Elasticity
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Estructuras de titanio con gradiente de porosidad – fabricación por el método de partículas espaciadoras y caracterización
ABSTRACT It has proposed the use of porous titanium to reduce the problem of mechanical incompatibility, which occurs between such material used in implants and bone. The pores introduction in titanium decreases its elastic modulus by bringing it closer to that of both cortical and trabecular bones. This paper describes titanium fabrication by powder metallu
Matéria (Rio J.). Publicado em: 19/07/2018
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2. Experimental exploratory study of failure modes in models of wooden rectangular beams of Hymenae spp
ABSTRACT According to the study of mechanical properties, wood is an elastic or elastoplastic material that presents different structural behaviour when tensioned or compressed. From the viewpoint of elasticity, wood is considered anisotropic, or rather it is a material with elastic properties that vary with the direction considered. During tree growth, the
Matéria (Rio J.). Publicado em: 05/03/2018
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3. Ensaios não destrutivos aplicados à madeira serrada e estruturas : técnicas potenciais para uso no Brasil
The wood has many different characteristics, resulting, in part, of the conditions in which the tree grows. The physical conditions of the wood are also influenced by its complex internal structure, resulting in an anisotropic behavior. Within this variability, its best use and application can be reached through non-destructive methods. The non-destructive m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
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4. On asymptotic analysis of spectral problems in elasticity
The three-dimensional spectral elasticity problem is studied in an anisotropic and inhomogeneous solid with small defects, i.e., inclusions, voids, and microcracks. Asymptotics of eigenfrequencies and the corresponding elastic eigenmodes are constructed and justified. New technicalities of the asymptotic analysis are related to variable coefficients of diffe
Latin American Journal of Solids and Structures. Publicado em: 2011
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5. O método de Galerkin descontínuo aplicado na investigação de um problema de elasticidade anisotrópica / The discontinuous Galerkin method applied to the investigation of an anisotropic elasticity problem
Estuda-se o problema de equilíbrio sem força de corpo de uma esfera anisotrópica sob compressão radial uniformemente distribuída sobre o seu contorno no contexto da teoria da elasticidade linear clássica. A solução deste problema prediz o fenômeno inaceitável da auto-intersecção em uma região próxima ao centro da esfera para uma dada faixa de p
Publicado em: 2009
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6. Analise de problemas de anisotropia 3D com sub regiões utilizando o metodo dos elementos de contorno / 3D anisotropic problems analysis with sub regions using the boundary element method
This work presents a tool for sub-domains analysis using the 3D Boundary Element Method (BEM3D). For its implementation are considered rectangular, quadratic and continuous elements, which means that the nodes share degrees of freedom and so, a proper formulation to deal with corners and edges between the sub regions is required. The matrices [H] and [G] are
Publicado em: 2008
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7. Variabilidade radial e longitudinal de propriedades da madeira de angico-vermelho (Anadenanthera peregrina (L.) Speg.) / Radial and longitudinal variability of properties of the wood of angico-vermelho (Anadenanthera peregrina (L.) Speg.)
The objective of this work was to determine the variability in the radial and longitudinal directions of some properties of the angico-vermelho (Anadenanthera peregrine (L.) Speg.) wood, from an area of native forest, located in the campus of the Universidade Federal de Viçosa, State of Minas Gerais, Brazil. The specific mass (basic and apparent), retractil
Publicado em: 2008
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8. Estudo do fenômeno da auto-intersecção em um anel anisotrópico / Study of the self-intersection anomaly in an anisotropic ring
This work concerns a numerical study of a homogeneous circular plate with a centered hole that is under a state of plane strain. The plate is fixed at its inner surface and is under uniform radial compression at its outer surface. The plate is linear, elastic, and anisotropic. An analytical solution for this problem, which satisfies the governing equations o
Publicado em: 2008
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9. Cálculo da elasticidade de cristais líquidos nemáticos através de métodos da geometria diferencial
Found on Frank free energy relation, the bulk elastic constants of the nematic liquid crystals are computed in this work through an approach based on the affine connection method. This consists in the deformation of the isotropic fluid sferical molecules until they acquire an elipsoidal shape, likely the estimated nematic molecules form. Herewith the method
Publicado em: 2007
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10. Avaliação da qualidade da madeira de híbrido clonal de Eucalyptus urophylla x grandis para produtos sólidos. / Avaliation of the wood quality in clonal hybrid of Eucalyptus urophylla x grandis for solids products
The present work had as general objective to study the influence of the growth rate in different silviculturals models in the wood quality of a clonal hybrid of Eucalyptus urophylla x Eucalyptus grandis. The considered effects were two ages (70 and 166 months) in two planting systems (coppice and reform), with three intensities thinning (91, 80,5 and 77,5%).
Publicado em: 2006
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11. Analise das distribuições de tensões e de deformações em vigas anisotropicas
This work presents an analysis on the distribution of stress and strain in anisotropic solids in the scope of the Theory of the Elasticity. In this context, to study the mechanical behavior, being based on the agreement of the stress, strain and deslocations, of anisotropic beams stress functions had been analyzed, consonants with those developed by LEKHNITS
Publicado em: 2001
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12. Passive biaxial mechanical properties of isolated canine myocardium.
Excised sheets of canine myocardium were subjected to cyclic loading and unloading in the predominant fibre and cross-fibre directions to determine passive mechanical properties. Myocardium under biaxial loading exhibits both non-linear elasticity and viscoelasticity with some strain-rate dependence in the position of the stress-strain relations, but very li