Shear Cores
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. High Order Impact Elastic Analysis of Circular Thick Cylindrical Sandwich Panels Subjected to Multi-mass Impacts
Abstract This study dealt with the dynamic model of composite cylindrical sandwich panels with flexible cores and simply supported boundary conditions under low velocity impacts of multiple large or small masses using a new improved higher order sandwich panel theory (IHSAPT). In-plane stresses were considered for the core and face sheets. Formulation was ba
Lat. Am. j. solids struct.. Publicado em: 2015-12
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2. Novel Layerwise Shear Correction Factors for Zigzag Theories of Circular Sandwich Plates with Functionally Graded Layers
AbstractThe available shear correction factors have mainly been proposed for single-layer rectangular plates with zero shear tractions and isotropic homogenous materials. The present analytical shear factors are especially suitable for the first-order zigzag or layerwise theories of circular sandwich plates with functionally graded cores/face sheets and simu
Lat. Am. j. solids struct.. Publicado em: 2015-07
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3. Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores
This paper dealt with free vibration analysis of thick double curved composite sandwich panels with simply supported or fully clamped boundary conditions based on a new improved higher order sandwich panel theory. The formulation used the first order shear deformation theory for composite face sheets and polynomial description for the displacement field in t
Lat. Am. j. solids struct.. Publicado em: 2014
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4. Influência da ciclagem térmica e mecânica em água na resistência ao cisalhamento da união infraestrutura/porcelana de cobertura de diferentes sistemas totalmente cerâmicos / Shear bond strength of all-ceramics core/veneer interface and its susceptibility to thermal and mechanical cycling
The objective of this study was to evaluate the influence of thermal and mechanical cycling on the shear bond strength of different all-ceramic cores and veneering porcelain interfaces. It was also to characterize chemically the interfaces by energy dispersive spectroscopy (EDS). The allceramic systems tested were lithium dissilicate (DL), zirconia veneered
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/05/2011
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5. As propriedades friccionais de areias de quartzo (natural e colorida): medidas efetuadas em experimentos físico-analógicos e em um ring-shear tester
Com o intuito de se determinarem as propriedades friccionais da areia de quartzo empregada em modelagens físico-analógicas foram desenvolvidos dois ensaios de laboratório. No primeiro, estimou-se o coeficiente de atrito interno a partir do ângulo de mergulho de falhas de empurrão, em caixas de areia, e, no segundo, realizaram-se medições em um ring-sh
Rem: Revista Escola de Minas. Publicado em: 2011-09
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6. Magmatic epidote and amphibole from the Rio Espinharas hybrid complex, Northeastern Brazil
The petrography and chemistry of epidote and amphibole from the Rio Espinharas hybrid complex (REHC), northeastern Brazil are reported. The Rio Espinharas complex is composed of an intimate association of diorite to shoshonitic metaluminous quartzmonzonite to slightly peraluminous syenogranite. The epidote shows four textural relationships: three are primary
Publicado em: 2010
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7. Análise estática e dinâmica de estruturas reticuladas : ambiente de simulçaão em JAVA / STATIC AND DYNAMIC ANALYSIS OF FRAME STRUCTURES: SIMULATION ENVIRONMENT USING JAVA
Neste trabalho são descritas análises estática e dinâmica em regime elástico de estruturas reticuladas utilizando o método dos elementos finitos (MEF). A superestrutura é modelada para seis famílias de estruturas reticuladas (treliça plana, treliça espacial, pórtico plano, grelha, pórtico espacial e pórtico espacial enrijecido com núcleo estrut
Publicado em: 2010
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8. Condicionamento estrutural das zonasa de cisalhamento da região de Forquilha, domínio Ceará Central: uma abordagem integrada de sensoriamento remoto e geologia estrutural
A região de Forquilha localiza-se no extremo noroeste do Domínio Ceará Central (porção setentrional da Província Borborema) e apresenta um arcabouço litoestratigráfico formado por rochas metaplutônicas paleoproterozóicas, seqüências metasupracrustais e granitóides neoproterozóicos. As rochas metassedimentares do Grupo Ceará ocupam a maior part
Publicado em: 2007
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9. Evolução tectono-estrutural do Campo de Xaréu (Sub-bacia de Mundaú, Bacia do Ceará - NE do Brasil: abordagem multiescala e pluriferramental
The Xaréu Oil Field, located in the center-southern portion of the Mundaú Sub-Basin (eastern portion of the Ceará Basin), is characterized by a main Iramework of NW-trending and NE-dipping faults. The faults in the Xaréu Oil Field, among which the Xaréu Fautt stands out, are arranged according to an extensional-listriclan, rooted on a detachment surface
Publicado em: 2004
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10. Estudo comparativo de processos continuos para analise de nucleos estruturais submetidos a torção
Four continuum methods for torsional analysis of structural cores that consist of one or two channel sections, connected by lintel beams, are described. . First, Vlasov s theory for thin walled beams of open sections is used. In the second method,the shear defonnationis included.The third methoduses a closed box torsion-bending theory,andthe last one adaptsU
Publicado em: 2000
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11. Relating protein conformational changes to packing efficiency and disorder
Changes in protein conformation play key roles in facilitating various biochemical processes, ranging from signaling and phosphorylation to transport and catalysis. While various factors that drive these motions such as environmental changes and binding of small molecules are well understood, specific causative effects on the structural features of the prote
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