Laminated Materials
Mostrando 13-24 de 38 artigos, teses e dissertações.
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13. Laminated composite based on polyester geotextile fibers and polyurethane resin for coating wood structures
New environmental laws have restricted the use of hardwood trees in overhead power lines structures, such as, poles and cross-arms, leading companies to seek alternative materials. Reforested wood coated with polymeric resin has been proposed as an environmental friendly solution, with improved electrical properties and protection against external agents, e.
Mat. Res.. Publicado em: 21/06/2013
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14. Maximization of Fundamental Frequency of Laminated Composite Cylindrical Shells by Ant Colony Algorithm
ABSTRACT: The success in developing modern aerospace systems addresses competitive subjects as optimization, reduced costs, sustainability, environment, weight, and safety. There is an increased demand for lighter materials such as laminated composites. In order to match the demand of aeronautical companies, the shell structures are very important. The dynam
J. Aerosp. Technol. Manag.. Publicado em: 2013-03
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15. 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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16. Finite element reduction strategy for composite sandwich plates with viscoelastic layers
Composite materials have been regarded as a convenient strategy in various types of engineering systems such as aeronautical and space structures, as well as architecture and light industry products due to their advantages over the traditional engineering materials, such as their high strength/stiffness relation characteristics and their anti-corrosion prope
Mat. Res.. Publicado em: 21/12/2012
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17. Optimization of laminated composite plates and shells using genetic algorithms, neural networks and finite elements
Structural optimization using computational tools has become a major research field in recent years. Methods commonly used in structural analysis and optimization may demand considerable computational cost, depending on the problem complexity. Therefore, many techniques have been evaluated in order to diminish such impact. Among these various techniques, Art
Latin American Journal of Solids and Structures. Publicado em: 2011
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18. Otimização estrutural de placas compostas laminadas sujeitas a efeitos aeroelásticos / Structural optimization of laminated composite plates subject to aeroelastic effects
Este trabalho apresenta uma metodologia utilizando técnicas de otimização estrutural para o projeto de placas feitas de material composto laminado sujeitas a interação fluido-estrutura. O procedimento de otimização busca o aumento da velocidade de ut- ter através da maximização das frequências naturais relacionadas aos modos de vibração que est�
Publicado em: 2011
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19. Análise de cascas abatidas de materiais compósitos laminados simétricos usando o método dos elementos de contorno / Analysis of shallow shells of symmetric composite laminated materials using the boundary element method
Este trabalho apresenta uma formulação do método dos elementos de contorno para o cálculo de deslocamentos em cascas abatidas de materiais compósitos laminados simétricos. A formulação desenvolvida baseia-se no acoplamento da formulação de elasticidade plana (formulação de membrana) e da formulação de placas finas (placas de Kirchhoff ou teoria
Publicado em: 2011
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20. Produção por extrusão e termoprensagem de laminados biodegradáveis a partir de farinha de mandioca, sorbitol e poli (butileno adipato co-tereftalato) / (PBAT)
A crescente quantidade de materiais sintéticos surgindo em nosso cotidiano, gerando grande volume destes dispostos na natureza, desperta grande interesse pelo desenvolvimento de materiais biodegradáveis. Dentre esses, os laminados são definidos como materiais com espessura maior do que filmes e menor do que folhas rígidas. O amido é um material biodegra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2010
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21. Analysis of stress in thin plates of composite materials under dynamic load using the boundary element method / Analise de tensões em placas finas de materiais compositos sob carregamento dinamico usando o metodo dos elementos de contorno
This work presents a dynamic formulation of the boundary element method for stress and failure criterion analyses of anisotropic thin plates. Formulations use elastostatic fundamental solutions and inertia terms are treated as body forces. Domain integrals that come from body forces are transformed into boundary integrals using the radial integration method
Publicado em: 2009
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22. Aprimoramento de formulação do MEF para barra geral laminada tridimensional pela consideração da cinemática de empenamento para seção qualquer / An improved finite element formulation for the analysis of general three-dimensional laminated bars with consideration of warping for any cross-section
In the present work an improved finite element formulation for the analysis of three-dimensional laminated bars is presented. The improvement is made by introducing the warping mode into the previous model that follows a general Reissner-Timoshenko kinematics hypotesis. In order to do so, a two-dimensional code is developed, based on Saint Venants torsion pr
Publicado em: 2008
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23. Painel de bambu laminado colado estrutural / Bamboo structural glued laminated panel
The search for products manufactured with renewable raw material which can be produced through an industrialization which does not cause environmental impacts led this research work to considerate the use of bamboo culm as woody material to manufacture structural panels that can be used as construction material. Bamboo presents some advantages over other mat
Publicado em: 2008
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24. Análise estática e dinâmica de estruturas delgadas de materiais compostos laminados incluindo materiais piezelétricos / Static and dynamic analysis of thin laminated composite structures with piezoelectric materials
Sabe-se que materiais compostos laminados são, hoje em dia, geralmente usados nas indústrias aeronáutica, aeroespacial, naval e outras, principalmente por causa de suas atrativas propriedades se comparadas aos materiais isotrópicos, como alta rigidez/peso, alta resistência, alto amortecimento e boas propriedades relacionadas ao isolamento térmico e ac�
Publicado em: 2008