Composed Beams
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Composite floor system with CFS trussed beams, concrete slab and innovative shear connectors
Abstract Steel and concrete floor systems are widely applied for buildings and provide excellent structural response, optimized material consumption, reduced beam height, and improved bending strength and stiffness capacity. In recent years, many experimental investigations concerned with new alternatives addressed to efficient interaction between steel and
REM, Int. Eng. J.. Publicado em: 2020-03
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2. Number of laminae on the mechanical behavior of glued laminated timber (glulam) of Toona ciliata produced with vegetable polyurethane adhesive
RESUMO A madeira laminada colada (MLC) é um material compósito obtido a partir da colagem de lâminas de madeira dispostas com as fibras paralelas entre si. O objetivo deste trabalho foi avaliar a influência do número de lâminas no comportamento mecânico de MLC de Toona ciliata produzidas com adesivo poliuretano de base vegetal. As vigas de MLC foram p
Ciênc. agrotec.. Publicado em: 20/12/2019
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3. Plate with holes as shear connector in cold formed steel composite beams
Resumo Buscando compatibilizar as estruturas em perfil formado a frio com os sistemas de piso com pré-laje, foi proposta nesse trabalho uma alternativa de conector de cisalhamento para vigas mistas compostas por perfil formado a frio que visa maximizar a área disponível para apoio das pré-lajes durante o processo construtivo. Trata-se de um conector em c
Rev. IBRACON Estrut. Mater.. Publicado em: 18/07/2019
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4. Flexural Wave Band Gaps in Phononic Crystal Euler-Bernoulli Beams Using Wave Finite Element and Plane Wave Expansion Methods
We investigate theoretically and experimentally the forced response of flexural waves propagating in a 1D phononic crystal (PC) Euler-Bernoulli beam, composed by steel and polyethylene, and its band structure. The finite element, spectral element, wave finite element, wave spectral element, conventional and improved plane wave expansion methods are applied.
Mat. Res.. Publicado em: 08/01/2018
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5. Numerical analysis of highly deformable elastoplastic beams
AbstractThe objective of the present study is to develop a numerical formulation to predict the behavior of highly deformable elastoplastic thin beams. Following the Euler-Bernoulli bending, the axial and shear effects are neglected, and the nonlinear second-order differential equation regarding the angle of rotation is defined based on the specific moment-c
Lat. Am. j. solids struct.. Publicado em: 2015-08
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6. Vibrations of beams with a variable cross-section fixed on rotational rigid disks
The work is focused on the problem of vibrating beams with a variable cross-section fixed on a rotational rigid disk. The beam is loaded by a transversal time varying force orthogonal to an axis of the beam and simultaneously parallel to the disk's plane. There are many ways of usage of the technical moveable systems composed of elements with the variable cr
Lat. Am. j. solids struct.. Publicado em: 2013-01
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7. Modular bridge timber trusses system: a good alternative to the Para State / Sistemas de treliças modulares para pontes de madeira: uma boa alternativa para o Estado do Pará
The Para state has an area of 1.253.164,49 KM POT.2; it has an abundant hydrography and nearly 19.253,35 Km of vicinal roads, that are cut by many rivers. In this context, the construction of bridges with small and medium spans is essential to the improvement of intercity and interstate transportation. The system of modular timber truss bridges, was already
Publicado em: 2010
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8. Estudo experimental de sistemas de reforço ao cisalhamento em vigas de concreto armado utilizando-se polímetro reforçado com fibras de carbono (PRFC)
The present work studied the behavior of Carbon Fiber Reinforced Polymer (CFRP) composite used as strengthening and rehabilitating structural material in reinforced concrete (RC) beams submitted to shear stress. The current state of the knowledge related to this issue is presented, and different conceptual and design models for shear strengthening of RC beam
Publicado em: 2008
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9. Avaliação por microtração da resistência de união de diferentes sistemas adesivos ao esmalte humano
The objective of this work was to evaluate the microtensile bond strength to the human enamel of three different adhesive systems. Twenty one not prepared third molar human teeth (n=21) had been divided in three groups, with seven teeth in each group (n=7), as the used adhesive system: SB - Adper Single Bond 2 (3M/ESPE, St Paul, MN, the USA); CL - Clearfil I
Publicado em: 2008
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10. Avaliação do comportamento mecânico ao cisalhamento de conectores de barras de aço com ganchos em vigas mistas de madeira laminada colada e concreto
The main objective of this work was to propose a reference specimen for the push-out test of rod-type fasteners in timber-concrete connections. The following experimental tests have been performed in order to achieve the goals of this research: pull-out tests of bonded-in steel rods in wood specimens, pull-out tests of bonded-in steel rods in concrete specim
Publicado em: 2008
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11. Efeitos coerentes no acoplamento dos lasers de fentosegundo e de diodo em vapor de rubÃdio
Mode-locked, phase-stabilized femtosecond (fs) lasers with high-repetition rate produce a frequency standard composed by a great number of narrow modes, known as frequency comb. The interaction of inhomogeneously broadened two-level systems with a train of fs pulses, for the case in which the atomic relaxation times are longer than the laser repetition perio
Publicado em: 2008
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12. Análise teórica e experimental de conectores de cisalhamento e vigas mistas constituídas por perfis de aço formados a frio e laje de vigotas pré-moldadas / Theoretical and experimental analysis of shear connectors and composite beams constituted of cold-formed steel beams and floor system with lattice girder beams
In Brazil, the lack of hot-rolled members and high cost of welded steel beams have increased the use of composite beams made of cold-formed steel beams and floor system with lattice girder beams, whose structural behavior is not perfectly understood. Although this system is similar to the one composed of hot-rolled steel beams and concrete slabs, it is impor
Publicado em: 2007