Laminated Structure
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. Nano-engineered composites: interlayer carbon nanotubes effect
The concept of carbon nanotube interlayer was successfully introduced to carbon fiber/epoxy composites. This new hybrid laminated composites was characterized by Raman spectroscopy, X-ray diffraction, scanning electron microscopy and tensile tests. An increase on peak stress close to 85% was witnessed when CNTs interlayer with 206.30 mg was placed to carbon
Mat. Res.. Publicado em: 05/03/2013
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14. Finite element validation on adhesive joint for composite fuselage model
A novel fabrication miniature composite fuselage structure consisted of a woven composite laminated with an adhesively bonded butt joint under axial compression loading is numerically simulated in this research. A Finite Element Analysis (FEA) via ABAQUS/Explicit was utilized to capture the complete compressive response that predicts the crushing behaviour a
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2012-03
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15. Vigas mistas com laje de concreto e perfis laminados tipo I: análise comparativa do comportamento estrutural entre conectores / Composite beams with reinforced concrete slab and rolled I beam: comparative analysis of the structural behavior of connectors
Among the many structural and building systems, it could be highlighted a system that is a mix of steel-concrete that allows the application of their structural and building advantages as whole. When dealing with metal structures, it was noticed some changes regarding the standards of the involved material due to its lack of availability; such measures do no
Publicado em: 2010
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16. Avaliação da tensão superficial do PVB e da PA-6. / Evaluation of surface tension of poly(vinyl butyral) and nylon-6.
In the Rheology and Polymer Processing Laboratory of Escola Politécnica of the University of São Paulo, Polyamide-6 / poly(vinyl butiral) film blends have been studied as an alternative for the recycling of post-consumption laminated glasses. The mechanical properties of these blends were studied and explained in light of their morphology. The morphology o
Publicado em: 2008
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17. Utilização de madeira de eucalipto de pequenas dimensões na fabricação de uma ponte protendida com madeira laminada colada / Use of small-sized eucalyptus wood to build a pre-stressed bridge with glued-laminated timber
This study aimed to build and evaluate the behavior of a highway stress-laminated timber bridge deck measuring 6m in length, 3.5 m width and 0.24 m thickness submitted to a load of 13 t. The deck was built with laminations made from eucalyptus logs of various thinning-originated specimens, with a mean diameter of 2.5 m and ages ranging between 8 and 19. To b
Publicado em: 2007
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18. UMA FORMULAÇÃO DE ELEMENTOS FINITOS AXISSIMÉTRICOS PARA ANÁLISE DE TUBOS LAMINADOS EM MATERIAIS COMPÓSITOS / AN AXISYMMETRIC FINITE ELEMENT FORMULATION FOR THE ANALYSIS OF LAMINATED COMPOSITE TUBES
The use of composite materials in structures has grown in the engineering practice due to its characteristics, of high strength, low density and a good stability to thermal effects. A class of composites, the fibrous laminates, is generally used in tubes subjected to many types of loadings as internal and/or external pressure, traction, torsion, temperatures
Publicado em: 2006
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19. Análise não linear física de placas e cascas anisotrópicas laminadas acopladas ou não com meio contínuo tridimensional viscoelástico através da combinação entre o MEC e o MEF / Physical non-linear analysis of anisotropic laminated plates and shells coupled or not with three-dimensional viscoelastic medium by BEM/FEM coupling
This work presents an anisotropic laminated stiffened shell formulation, considering physical non-linearity with non-associative law, coupled to viscoelastic three-dimensional continuum medium. Plane triangular finite elements with cubic approximation for nodal variables are developed to model the shell. Bar elements with the same approximation are derived f
Publicado em: 2004
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20. O ambiente deposicional da formação Carajas e uma proposta de modelo evolutivo para a Bacia Grão Para
The large Carajás iron ores belongs to the Carajás formation, which is a 100-400m thick banded and laminated iron formation (jaspilite), located at Pará state in North Brazil. This almost continuous formation outcrops for at least 260km, in 60 ore deposits, distributed in three main ridges, São Felix, Leste and Carajás. The last one is a sinformal struc
Publicado em: 2003
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21. Formulation of a rectangular finite element for a laminated composite plate with piezoelectric layers.
A formulation of a finite element for a composite plate containing distributed piexoelectric layers that can be either bonded to the surface or embedded within the structure, considering the Classical Laminated Plate Theory (CLPT), is presented. Temperatures effects are neglected. The finite element has a rectangular shape with four nodal points, flexural an
Publicado em: 2000
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22. Modelling of mechanical properties of CRFC composites under flexure loading
Carbon Fibre Reinforced Carbon (CFRC) Composites are increasing their applications due to their high strength and Young’s Modulus at high temperatures in inert atmosphere. Although much work has been done on processing and structure and properties relationship, few studies have addressed the modelling of mechanical properties. This work is divided in two p
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2000
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23. CONTRÔLE HYBRIDE ACTIFPASSIF DES VIBRATIONS DE STRUCTURES PAR DES MATÉRIAUX PIÉZOÉLECTRIQUES ET VISCOÉLASTIQUES : POUTRES SANDWICH/MULTICOUCHES INTELLIGENTES
This thesis presents a numerical analysis of the structural vibrations damping obtained by passive, active and hybrid active-passive damping treatments. For that, a finite element model of a sandwich beam which layers can be elastic, piezoelectric or viscoelastic is presented. It is validated through comparisons with analytical, experimental and numerical re
Publicado em: 2000
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24. Structure, Growth, and Decomposition of Laminated Algal-Bacterial Mats in Alkaline Hot Springs
Laminated mats of unique character in siliceous alkaline hot springs of Yellowstone Park are formed predominantly by two organisms, a unicellular blue-green alga, Synechococcus lividus, and a filamentous, gliding, photosynthetic bacterium, Chloroflexus aurantiacus. The mats can be divided approximately into two major zones: an upper, aerobic zone in which su