Bibliografie tematiche / Composite beams

Letteratura scientifica selezionata sul tema "Composite beams"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 6 settembre 2023

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Articoli di riviste sul tema "Composite beams"

1

Zhao, Wei Jian, Jia Xin Tong, Shen Ming Yuan e Ye Nan Guo. "Research Progress on Reinforced Concrete Composite Beam in China". Applied Mechanics and Materials 584-586 (luglio 2014): 939–43. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.939.

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Abstract (sommario):
Reinforced concrete composite beam plays a very important role in the precast concrete structure, composite beam research is critical. Based on the research results about it in China, on the one hand, from the traditional composite beams to the improved ones, the various kinds of composite beams were concluded; on the other hand, the applications of new building materials in the composite beams had been included, which included fiber reinforced cement-based composites, steel fiber reinforced concrete, reactive powder concrete and crumb rubber concrete. Through to the both related tests and theoretical studies, the progress of the composite beams was summarized. Finally, the further research was prospected.
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2

Endriatno, Nanang. "Experimental Investigation on Vibration Responses of Fiberglass Reinforced Plastic". International Journal of Engineering and Computer Science 10, n. 4 (26 aprile 2021): 25316–20. http://dx.doi.org/10.18535/ijecs/v10i4.4575.

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The purpose of this study is to analyze the vibration displacement on fiberglass reinforced plastic beams with variations a number of fibers in the resin matrix. Composite beams was made of fiberglass and polyester resin matrix with a number of fiberglass: 0, 24, and 48. Composite beams was manufactured by hand lay-up method with the unidirectional fiber orientation. The composite beams used have the dimension of length: 500 mm, height: 20 mm, and width: 20 mm. During the experimental test, the beam was vibrated using an exciter motor which was placed at the end of the cantilever support then using a vibration meter, the vibration displacement data (mm) was measured by placing the vibration transducer postions : 50 mm, 250 mm, and 450 mm from the cantilever support. During the vibration test, the vibration displacement data on the vibration meter screen were recorded using a camera recorder and the data was taken 6 times at each of measurement points. The experimental and analysis results show that the value of vibration displacement (mm) decreases when the fiberglass is added to the composite beam, or in other words, the addition of fiberglass provides an increase in the ability of the beam to withstand vibrations. The maximum vibration displacement value on composites with 0 fiberglass: 0.641 mm, then the vibration displacement decreased in composites with 24 fiberglass: 0.506 mm and the lowest displacement value for the composites with 48 fiberglass: 0.395 mm. Whereas for 3 measurement points at positions 5 cm, 25 cm, and 45 cm along the beam for three kind of the composites, the maximum value of vibration displacement value was obtained at the end of beam composites or at 45 cm from cantilever support: 0.735 mm on composite beam with 0 fiberglass and minimum at position 5 cm near the cantilever support with the value of vibration displacement: 0.323 mm on composite beam with 48 fiberglass.
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3

Al-Thabhawee, Hayder Wafi. "Experimental investigation of composite steel–concrete beams using symmetrical and asymmetrical castellated beams". Curved and Layered Structures 9, n. 1 (1 gennaio 2022): 227–35. http://dx.doi.org/10.1515/cls-2022-0019.

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Abstract This study aims to investigate the behavior of concrete slabs acting compositely with symmetrical and asymmetrical castellated beams. Stud connectors are used to connect the concrete slab and steel section. The use of castellated steel beams to build up composite steel-concrete beams is now common practice in building construction. Five simply supported composite beams were examined under two-point loading. Two specimens built up from standard steel beams were used as control specimens and three specimens were built up from castellated steel beams. One of these specimens was built up using a castellated steel beam with an asymmetrical cross-section fabricated from two different standard sections (IPE120/HEA120). The concrete slab of all composite specimens had the same dimensions and properties. The experimental results showed that strength and rigidity were considerably greater for composite castellated steel beams compared to composite beams built up from the parent sections. The ultimate load capacity of a composite castellated beam fabricated from an IPE120 section was 46% greater than that of a composite beam built up using the parent beam, and the ultimate load capacity of a composite castellated beam fabricated from a wide-flanged HEA120 section resulted in an increase of 21% over the parent beam control specimen. The ultimate load capacity of the composite specimen built up using the asymmetrical castellated beam (IPE120/HEA120) achieved increases of 69% and 12%, respectively, compared to the control specimens built up from standard sections.
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HUANG, C. W., e Y. H. SU. "DYNAMIC CHARACTERISTICS OF PARTIAL COMPOSITE BEAMS". International Journal of Structural Stability and Dynamics 08, n. 04 (dicembre 2008): 665–85. http://dx.doi.org/10.1142/s0219455408002946.

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This paper is concerned with the dynamic characteristics of composite beams with partial shear connections. The governing equations of motion for partial composite beams are derived from the one-dimensional partial composite beam theory. By solving the corresponding characteristic equation, the natural frequencies and modal shapes for simple partial composite beams are obtained. The orthogonality condition between the natural modes is utilized to decouple the equations of motion. Closed-form solution for the simple partial composite beam subjected to a moving load is derived by the modal superposition method. Key parameters that govern the fundamental frequency and deflection impact factor of simple partial composite beams are identified. Numerical results show that the former is controlled by the composite connection and section combination parameters, and the latter by the fundamental frequency ratio. It was observed that the time-history response of a partial composite beam may differ significantly from that of a full composite beam in terms of amplitude, period, and overall shape, depending on the composition connection.
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5

Song, Xingyu, Yan Liu, Xiaodong Fu, Hongwei Ma e Xiaolun Hu. "Experimental Study on Flexural Behaviour of Prestressed Specified Density Concrete Composite Beams". Sustainability 14, n. 22 (8 novembre 2022): 14727. http://dx.doi.org/10.3390/su142214727.

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To solve the problem of poor seismic resistance due to the disadvantages of traditional concrete composite beams, such as heavy self-weight in prefabricated buildings, prestressed specified-density concrete composite beams are proposed herein. First, a mix ratio test of specified-density concrete was performed. Second, five prestressed specified-density composite beams, a prestressed ordinary concrete composite beam, and a prestressed semi lightweight concrete cast-in-situ beam were tested. The influence of the precast concrete height, reinforcement ratio, and concrete materials on the failure mechanism, flexural bearing capacity, and short-term stiffness of the composite beams were analysed. From the results, the specified-density concrete composite beams and the ordinary composite beam had similar ultimate bearing capacities, but the average distance between crack spacings of the former was smaller. The precast concrete height affected the bending performance of the prestressed specified density concrete composite beam insignificantly, but the maximum ultimate bearing capacity of the composite beam could be increased by 35.6% by increasing the reinforcement ratio. The composite beam and the cast-in-place beam exhibited similar load-carrying capabilities and deformation properties. The average crack spacing, cracking load, and ultimate load value of the specified density concrete composite beams calculated according to the China national standard “Code for design of concrete structures” were consistent with the measured values.
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Umer Sial, Sardar, e M. Iqbal Khan. "Performance of Strain hardening cementitious composite as strengthening and protective overlay in flexural members". MATEC Web of Conferences 199 (2018): 09005. http://dx.doi.org/10.1051/matecconf/201819909005.

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Strain-hardening cementitious composites (SHCC) are advanced type of cement-based composite materials having superior crack control and tensile properties. Owing to such characteristics, SHCC can be used for strengthening and crack-width control of structural members. This paper presents a study on the flexural response of reinforced concrete (RC) beams with different overlays of SHCC. The work consists of RC-SHCC overlay beams, in which SHCC overlays of different thicknesses (15% and 30% of beam height, plus cover) and reinforcement ratios (0% and 0.4%) were cast at the bottom of the RC beams. The performance of the RC-SHCC overlay beams was compared with control RC beams having concrete overlays of similar parameters. A series of eight laboratory-scale control and composite beam specimens were tested under four-point bending test. From the experimental results, it was observed that RC-SHCC overlay beams showed improved flexural capacity and crack control as compared to that of control beams. The beams with unreinforced SHCC overlays showed significant improvement at service stage, while beams with reinforced SHCC overlays showed significant improvement at peak stage. The SHCC overlay beams without reinforcement have showed improved ductility as compared to control beams with concrete overlays. Additionally, the SHCC overlays performed as a protective layer for controlling the crack widths in the composite beams.
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Lu, Tingting, Kai Guan e Haowei Jin. "Experimental Study on Bending Performance of High-Performance Fiber-Reinforced Cement Composite Prefabricated Monolithic Composite Beams". Buildings 13, n. 7 (10 luglio 2023): 1744. http://dx.doi.org/10.3390/buildings13071744.

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To enhance the mechanical properties and damage resistance of prefabricated monolithic composite beams, this study introduces HPFRCC precast mold shells as a replacement for ordinary concrete in the construction of prefabricated monolithic composite beams. These HPFRCC precast mold shell prefabricated monolithic composite beam members are then subjected to experimental investigations to analyze their flexural properties. The results of the study indicate that the U–shaped HPFRCC precast mold shell exhibits excellent bonding with the post-cast concrete, with no significant peeling observed. Moreover, compared to ordinary cast-in-place monolithic RC beams, the HPFRCC/RC prefabricated monolithic composite beams demonstrate a 17.2% increase in peak load and a 24.55% increase in yield load. Similarly, the HPFRCC/RC prefabricated monolithic composite beams show an 8.1% increase in peak load and a 5.59% increase in yield load compared to ordinary RC composite beams. In comparison to both ordinary cast-in-place monolithic RC beams and ordinary RC composite beams, the cracks observed in the HPFRCC/RC prefabricated monolithic composite beams are denser and finer, with a smaller crack development rate and width. These findings suggest that the incorporation of HPFRCC materials improves the damage resistance of the beam members.
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Wang, Boxin, Ruichang Fang e Qing Wang. "Flexural Behavior of Fiber-Reinforced Self-Stressing Concrete T-Shaped Composite Beams". Advances in Civil Engineering 2020 (24 giugno 2020): 1–17. http://dx.doi.org/10.1155/2020/8810440.

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Given the excellent crack resistance performance of steel fiber-reinforced self-stressing concrete (SFRSSC), the bending performance of some composite beams with SFRSSC laminated layers was studied. The experiment conducted in this study comprised a single-span composite beam test (including 3 test beams) and a two-span continuous composite beam test (including 2 test beams). All the test beams were T-shaped. The cracking load, yielding load, and ultimate load of all the test beams were recorded and comparatively analyzed. Experimental results showed that the cracking load of the test beam with an SFRSSC laminated layer is significantly increased. Mechanical analysis and numerical simulation of the test beams were conducted, and the obtained results agreed well with the experimental results. The composite beams under different working conditions were also numerically simulated. Through the simulation, reasonable ranges of precompressive stress and length of the SFRSSC laminated layer at intermediate support of continuous composite beam were obtained.
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Han, Xiaoli, Jian Dai, Wei Qian, Zhaoyang Zhu e Baolong Li. "Effects of dowels on the mechanical properties of wooden composite beams in ancient timber structures". BioResources 16, n. 4 (27 agosto 2021): 6891–909. http://dx.doi.org/10.15376/biores.16.4.6891-6909.

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In order to provide more accurate suggestions for the restoration of ancient timber buildings, five types of specimens were designed for static loading tests. The tree species used for the specimens was larch. The wooden composite beams were composed of purlins, tie plates, and fangs. The study analyzed the effects of the number and position of dowels on the mechanical behaviors of wooden composite beams in ancient timber buildings. The bending moment, slippage, strain of the wooden composite beams under the deflection of the beam allowed according to code, and the ultimate bearing capacity of the wooden column composite beams under failure conditions were examined. The test results showed that the dowels could improve the bending capacity of the wooden composite beams. The even distribution of the dowels was beneficial in reducing the sliding effect of the wooden composite beams. Under the amount of deflection allowed by the code, the mid-span section strain along the height of the wooden composite beam approximately conformed to the plane section assumption. The wooden composite beam still had bending capacity after each member failed. The results of this study illustrated that dowels improved the overall mechanical properties of the wooden composite beams.
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Maaroof, Atyaf Abdul Azeez, Jasim Ali Abdullah e Suhaib Yahya Kasim. "Performance of Steel Perforated and Partially-Encased Composite Self-Connected Beams". Jurnal Kejuruteraan 34, n. 4 (30 luglio 2022): 703–17. http://dx.doi.org/10.17576/jkukm-2022-34(4)-18.

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Abstract (sommario):
The self-connected partially encased composite beams may be used rather than the conventional composite beams; those are connected by the concrete passing through the web-openings of the perforated profiles which works as shear connectors. This technique minimizes the construction cost and enhances the load carrying capacity and ductility of this kind of structures better than the perforated steel beams. The presented work investigates the performance of perforated steel and partially-encased composited self-connected simply supported beams applied to three-points of loading. The effect of the openings shape and the presence of concrete on the performance of the beams are investigated by testing eight specimens of perforated steel and composite beams. The openings’ shapes of perforated steel profiles and composite beams were square, rectangular and circular. The solid steel profiles are taken as control beams in both exposed and encased specimens. The composite beam constructed using perforated steel profile with square openings was reinforced with conventional reinforcement, and setting its stirrups passing through the openings to improve the self connection. The failure modes, strain behaviours, and load-deflection curves were extensively discussed. The composite beams reinforced with perforated steel profiles exhibit higher composite performance than that reinforced with solid profiles. The concrete encasement improved the local deformation performance of the perforated steel profiles (50-300%), leading to a more ductile behaviour and a higher dissipation of energy. The square openings provide higher connectivity than other shapes due to the better arrangement of openings and presence of reinforced concrete.
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Tesi sul tema "Composite beams"

1

Bhutta, Salman Ahmed. "Analytical modeling of hybrid composite beams". Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-11102009-020112/.

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2

Megharief, Jihad Dokali. "Behavior of composite castellated beams". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ37273.pdf.

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3

Molenstra, Nadia Julia. "Ultimate strength of composite beams". Thesis, University of Warwick, 1990. http://wrap.warwick.ac.uk/34713/.

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The study of composite beams is characterised by the connection between the two components: the concrete slab and the steel girder. In this thesis, two different problems, related to this connection were studied: the problem of partial interaction in composite beams of long spans with low degrees of shear connection, and the problem of transverse flexibility of the stud connection 'joint' between the concrete slab and the steel beam as part of a discrete inverted U-frame. This thesis is therefore divided into two separate parts. The study of beams with partial shear connection and solid slabs or slabs with metal decking is considered in the first part. Such beams, with a uniform stud spacing over each shear span, with spans longer than 10 m - generally propped during construction, and with low degrees of shear connection, could fail prematurely and suddenly in shear rather than gradually in bending, due to the limited slip deformation capacity of the studs in shear. In order to investigate the behaviour of simply supported and continuous composite beams with different degrees of shear connection, different geometry and different shear spans under design ultimate loading conditions, a numerical computer simulation program was written. The program takes account of the relative displacement between the slab and the beam and the non-linear behaviour of steel, concrete and stud connectors. A data bank of maximum slip results for different beams is obtained for ultimate beam loads designed to the interpolation method in Eurocode 4. The computer simulation gives a conservative but safe assessment of the suitability of the degree of interaction for a specific design ultimate load . The results were used to formulate a tentative design method for composite beams with solid slabs and partial shear connection. Discrete inverted U-frame action exists between composite bridge beams with intermittent vertical web stiffeners which provide lateral restraint to the bottom flange in the hogging bending region near the internal supports. The design method in BS 5400:Part 3 for discrete U-frame action gives values for the transverse flexibility of a number of standard structural steel connections which are used in the calculation of the effective buckling length and the lateral deflection of the compression flange. To obtain similar values for steel-concrete joints, tests were done to scale 1:1 on six flange-slab connections with different stud configurations, but constant conservative dimensions for the steel flange and the concrete slab. Their crack patterns can be predicted by using a truss analogy. All test specimens either failed in shear or by puffing out of the studs, and shear cracking and shear failure criteria for concrete beams can be used to predict the cracking and failure loads. The transverse elastic flexibiities of the joints in these tests only represent the behaviour of the same joints in a complete structure up to the point where the shear cracks propagated over the full width of the specimens. Based on these few test results, a limited tentative design equation is proposed for the transverse flexibility of these type of stud connections, although further research is required into the influence of the increased flexibility on the buckling mode and the variation of the flexibility with variables other than the stud configurations.
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Fan, Chun Keung Roger. "Buckling in continuous composite beams". Thesis, University of Warwick, 1990. http://wrap.warwick.ac.uk/106724/.

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Abstract (sommario):
Two aspects of the buckling behaviour of continuous composite beams of steel and concrete are considered. The first part relates to the study of moment redistribution in braced slender beams (Class 3 draft Eurocode 4) due to local buckling in the hogging moment regions. The second part describes the experimental work to investigate the ultimate load behaviour of unbraced compact beams (Classes 1 and 2 draft Eurocode 4) in the hogging moment regions. For a braced continuous slender composite beam, local buckling at an internal support allows a redistribution of bending moment from the hogging regions to the sagging regions, in addition to material nonlinearity. This effect was studied by a computer simulation on two-span beams. The program takes into account not only the effect of local buckling, but also material nonlinearity and residual stresses, on moment redistribution. The ultimate loads designed to the less conservative method for Class 3 beans in the draft Eurocode 4 were used as a datum in the parametric study. The simulation then gave an independent assessment of the appropriateness and safety of these loads at the ultimate limit state. It is shown that the design method is slightly conservative. Residual stresses have very little effect on the ultimate carrying capacity. Furthermore, in design to the draft Eurocode 4, unpropped construction is more restrictive than propped construction, and hence the results are also more conservative. Lateral buckling of continuous unbraced composite beams in the hogging moment regions can only occur in a distortional mode, and is most unlikely to happen in practical building or bridge structures using hot-rolled steel sections of span up to about 30m. Various design methods based on numerical studies now exist to predict the ultimate strength of continuous composite beams affected by distortional lateral buckling, but few experimental results are available to validate their theoretical assumptions and accuracy. Tests at realistic scale on two T-beams and two inverted U-frames at the Class 2-3 Interface, in accordance with the draft Eurocode 4, are reported. Their results are compared with predictions by five design methods, four of which are satisfactory for the beams tested except BS5400:Part 3. Due to premature fracture of reinforcing fabric in one of the U-frame tests, it is recommended not to include their contribution in moment resistance, when the composite cross-section is plastic and a design requires a large amount of rotation capacity in the hogging moment regions. Based on limited test results, a tentative method is proposed to provide a quick check, whether distortional lateral buckling needs to be considered or not, for continuous composite beams with Class 1 or 2 cross-sections.
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Jamal, Dany. "Solution methods of composite beams". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-264913.

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Abstract (sommario):
Solutions of composite beams encounter some specific problems, such as shrinkage and creep of concrete, cracking of concrete and plasticity of steel, partial interaction of elements or history of erection and loading process. These factors and others affect the distribution of internal forces along the beam, the distribution of stresses along the cross-section and also stiffness and deflection of beams. The goal is to describe and compare methods for analysis of composite steel and concrete beams by more simplified approaches allowed by Eurocode with more advanced techniques. The studies will be carried out on the simply supported and continuous beams designed with respect to Eurocode 1, 2, 3 and 4.
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Do, Nascimento Oliveira Jose Emidio. "Deformation and damage analysis of composite beams equipped with polyvinylidene fluoride film sensors /". [S.l. : s.n.], 2008. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1001&context=td_cput.

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Kong, Yow Wai. "Computer aided design of composite beams". Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63364.

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Rakib, Saad Namik. "The behaviour of continuous composite beams". Thesis, Cardiff University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425983.

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9

BARROS, LUIS PAULO FRANCO DE. "PIEZOELECTRIC PATCHES MODELING FOR COMPOSITE BEAMS". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1998. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=26509@1.

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Abstract (sommario):
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
Esta dissertação trata da modelagem dos esforços transmitidos por atuadores piezoelétricos, colados ou embutidos em vigas compósitas laminadas. O trabalho é motivado por aplicações na área de materiais e estruturas inteligentes. Em particular, procura-se avaliar o comportamento de diferentes teorias aproximadas nas faixas de médias e altas frequências, quando os comprimentos de onda podem ser da ordem da espessura da viga. Nestes casos, teorias tradicionais de vigas deixam de representar com acuracidade a resposta dinâmica de estruturas compósitas. Além disso, modelos convencionais que procuram representar os esforços gerados pelo atuador por forças e momentos fletores equivalentes, geralmente resultantes de uma análise estática, deixam de ser efetivos. São estudados modelos baseados na Teoria Clássica de Laminação (hipótese cinemática de Bernoulli-Euler) e na Teoria de Deformação Cisalhante de Primeira Ordem (hipótese cinemática de Timonshenko) e na Teoria discreta de Laminação proposta por Reddy (Reddy’s Layerwise Theory). Os três modelos são escritos na forma de equações de estado, e um método de solução é proposto para se obter a matriz de impedância dos atuadores. Resultados dos modelos estudados são comparados com os obtidos pelo método dos elementos finitos (código ANSYStm). São apresentados resultados para atuadores formados por camadas de PZT e Alumínio, bem como por camadas intercaladas de PZT, Aramide-Epóxi e Alumínio.
This dissertation addresses the problem of modeling the excitation of laminated composite beams by piezoelectric patches bonded or embedded in the structure. This work has been motivated by applications in the field of smart structures and materials. In particular, attention is paid to the electromechanical response in the high-frequency range. An attempt is made to evaluate the capabilities of different laminate theories in the medium and high-frequency ranges, where traditional models, such as the Classical (Bernouli-Euler) or First Order Shear Deformation (Timoshenko) theories, fail to provide accurate assessments of the structural dynamic response. Also, at these frequency ranges, conventional approaches to model the piezoelectric excitation via equivalent forces and bending moments, usually resulting from static analysis, are no longer satisfactory. Three different laminate theories are investigated: Classical, First Order Shear Deformation, and Reddy’s Layerwise theories. In the frequency domain, the governing electro-elastodynamic equations are written in a common state space formulation. A general method of solution is presented where the impedance matrix for the actuator is analytically evaluated. Comparisons are also made with numerical models obtained from a commercial finite element code.
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Adhikari, Samiran. "High-definition Modeling of Composite Beams". University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627666419572229.

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Libri sul tema "Composite beams"

1

Fan, Chun Keung Roger. Buckling in continuous composite beams. [s.l.]: typescript, 1990.

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2

Molenstra, Nadia Julia. Ultimate strength of composite beams. [s.l.]: typescript, 1990.

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3

United States. National Aeronautics and Space Administration., a cura di. Flutter analysis of composite box beams. [Washington, D.C.]: National Aeronautics and Space Administration, 1995.

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4

Kissane, Robert J. Lateral restraint of non-composite beams. Albany, NY: New York State Dept. of Transportation, Engineering Research and Development Bureau, 1985.

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5

Darwin, David. Steel and composite beams with web openings: Design of steel and composite beams with web openings. Chicago, Ill: American Institute of Steel Construction, 1990.

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6

Banks, H. Thomas. On damping mechanisms in beams. Hampton, Va: ICASE, 1989.

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7

Center, Lewis Research, a cura di. Free vibrations of delaminated beams. Cleveland, Ohio: National Aeronautics and Space Administration, Lewis Research Center, 1992.

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8

Ghorashi, Mehrdaad. Statics and Rotational Dynamics of Composite Beams. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-14959-2.

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9

Librescu, Liviu. Thin-walled composite beams: Theory and application. Dordrecht: Springer, 2006.

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10

W, Hyer M., e United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., a cura di. Large deformation dynamic bending of composite beams. [Washington, D.C.]: National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1986.

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Capitoli di libri sul tema "Composite beams"

1

Dolan, Charles W., e H. R. Hamilton. "Composite Beams". In Prestressed Concrete, 283–300. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97882-6_10.

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2

Oñate, Eugenio. "3D Composite Beams". In Structural Analysis with the Finite Element Method Linear Statics, 150–232. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-1-4020-8743-1_4.

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Strømmen, Einar N. "Stresses in Composite Beams". In Structural Mechanics, 149–56. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44318-4_7.

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Oñate, Eugenio. "Composite Laminated Plane Beams". In Structural Analysis with the Finite Element Method Linear Statics, 98–149. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-1-4020-8743-1_3.

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Öchsner, Andreas, e M. Merkel. "Beams of Composite Materials". In One-Dimensional Finite Elements, 209–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31797-2_9.

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Öchsner, Andreas, e Markus Merkel. "Beams of Composite Materials". In One-Dimensional Finite Elements, 205–27. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75145-0_9.

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GangaRao, Hota V. S., e Woraphot Prachasaree. "Analysis of FRP Composite Beams". In FRP Composite Structures, 149–203. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003196754-5.

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Gay, Daniel. "Torsion of Composite Beams of Any Section Shape". In Composite Materials, 377–85. 4a ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003195788-20.

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Gay, Daniel. "Bending of Composite Beams of Any Section Shape". In Composite Materials, 355–76. 4a ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003195788-19.

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Kvočák, Vincent, e Daniel Dubecký. "Fatigue Tests of Composite Beams". In SpringerBriefs in Applied Sciences and Technology, 79–87. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66925-6_7.

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Atti di convegni sul tema "Composite beams"

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McCarrick, James. "A Composite Target Concept for Multi-Pulse Radiography". In BEAMS 2002: 14th International Conference on High-Power Particle Beams. AIP, 2002. http://dx.doi.org/10.1063/1.1530821.

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Sheehan, Therese, Xianghe Dai, Jie Yang, Kan Zhou e Dennis Lam. "Flexural behaviour of composite slim floor beams". In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.6963.

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Abstract (sommario):
Composite slim floor beams comprise a steel section embedded in a concrete slab, offering the advantages of a steel-concrete composite structure combined with a reduced floor depth. Several mechanisms contribute to the shear connection in this type of beam, such as headed studs, friction and clamping effects and the using of reinforcement bars passing through holes in the steel beam web. However, to date, nobody has systematically identified these mechanisms and Eurocode 4 does not provide specific design guidance for slim floor beams. Hence, a series of shear beam tests and flexural beam tests were carried out in order to assess the degree of shear connection and connector capacity in these beams. The test set-up is described including different arrangements of shear connectors for each specimen. The paper presents the findings from the flexural beam tests. The results are compared with those from the previous shear beam tests. Numerical models will be developed in future to extend the data and include a wider range of parameters. The data will also be used to improve understanding of this type of beam and will lead to the provision of specific design guidelines for slim floor beams.
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"Cyclic Response of Composite Coupling Beams". In SP-174: Hybrid and Composite Structures. American Concrete Institute, 1998. http://dx.doi.org/10.14359/5959.

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Bradford, Mark A., Yong-Lin Pi e Brian Uy. "Ductility of Composite Beams with Trapezoidal Composite Slabs". In International Conference on Composite Construction in Steel and Concrete 2008. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41142(396)13.

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Aggelopoulos, Eleftherios, Francois Hanus e Mark Lawson. "Shear connection requirements for composite cellular beams". In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.7161.

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Beams with regular circular web openings (cellular beams) are often used in composite construction. Rules for the minimum degree of shear connection in composite beams are presented in Eurocode 4 but were derived for solid web beams in propped construction. This paper investigates the degree of shear connection requirements for composite cellular beams, focusing on the combined effect of using a steel section with regularly spaced, large circular web openings and unpropped construction conditions. The effect of the diameter and the spacing of the openings is also investigated. In order to provide rules for the minimum degree of shear connection in cellular beams, parametric finite element (FE) analyses were carried out for beams in the span range of 9 to 18 m. The results were calibrated against a 15.3 m span composite cellular beam test with a low degree of shear connection. The proposed minimum degree of shear connection requirements for beams with regular circular web openings are presented for both propped and unpropped construction, and for symmetric and asymmetric steel sections. Comparisons are made with equivalent beams with solid webs (no openings) and it is shown that significant relaxation in the codified minimum degree of shear connection to the current version of Eurocode 4 can be justified for composite cellular beams.
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Vivek, P. G., Ankuran Saha, Apurba Das, Kazuaki Inaba e Amit Karmakar. "Stiffness Analysis of Delaminated Composite Beams Using Roller Clamps". In ASME 2021 Gas Turbine India Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gtindia2021-76042.

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Abstract Composites are favored over other traditional materials in many aerospace applications because of their high stiffness and strength-to-weight ratio. Taylor made material properties can be achieved by scheming the structural parameters making the material light, high strength and durable. Present work deals with a novel approach to enhance the strength of a layered delaminated composite beam using roller clamps to improve stiffness by providing uniform transverse force. Composite beam stiffness significantly degrades due to adverse environmental condition, impact loading and delamination effect. Composite structures are prone to delamination during its life span. Therefore in depth knowledge is needed to find the effect of roller clamps on the dynamic behavior of beam with varying delamination sizes. Present approach will be useful to enhance the stiffness of composite structure with delamination. The free vibration of a clamped cantilever beam is investigated, and the results are compared to those of an unclamped and undelaminated beam. The findings are supported by experimentally obtained responses (modal analysis). Furthermore, the complex activity of the laminated structure is numerically computed and the obtained data is compared to those available in open literature to ensure correctness. The laminated composite beam’s static and free vibration responses are calculated using finite element simulation software (ANSYS).
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Kumar, T. Hemanth, e G. Sri Harsha. "Finite element analysis of composite beams". In SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0057910.

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Gardner, Leroy, Merih Kucukler e Lorenzo Macorini. "Deformation-Based Design of Composite Beams". In International Conference on Composite Construction in Steel and Concrete 2013. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479735.011.

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Gizejowski, Marian A., e Wael A. Salah. "Numerical Modeling of Composite Castellated Beams". In International Conference on Composite Construction in Steel and Concrete 2008. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41142(396)45.

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Emam, Samir A., e Ali H. Nayfeh. "Postbuckling and Free Vibrations of Composite Beams". In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35007.

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Abstract (sommario):
An exact solution for the postbuckling configurations of composite beams is presented. The equations governing the axial and transverse vibrations of a composite laminated beam accounting for the midplane stretching are presented. The inplane inertia and damping are neglected, and hence the two equations are reduced to a single equation governing the transverse vibrations. This equation is a nonlinear fourth-order partial-integral differential equation. We find that the governing equation for the postbuckling of a symmetric or antisymmetric composite beam has the same form as that of a metallic beam. A closed-form solution for the postbuckling configurations due to a given axial load beyond the critical buckling load is obtained. We followed Nayfeh, Anderson, and Kreider and exactly solved the linear vibration problem around the first buckled configuration to obtain the fundamental natural frequencies and their corresponding mode shapes using different fiber orientations. Characteristic curves showing variations of the maximum static deflection and the fundamental natural frequency of postbuckling vibrations with the applied axial load for a variety of fiber orientations are presented. We find out that the line-up orientation of the laminate strongly affects the static buckled configuration and the fundamental natural frequency. The ratio of the axial stiffness to the bending stiffness is a crucial parameter in the analysis. This parameter can be used to help design and optimize the composite beams behavior in the postbuckling domain.
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Rapporti di organizzazioni sul tema "Composite beams"

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Ferrante, César A. O., Sebastião A. L. de Andrade, Luciano R. O. de Lima e Pedro C. G. da S. Vellasco. BEHAVIOUR OF COMPOSITE BEAMS WITH EMBEDDED COMPRESSION FLANGE. The Hong Kong Institute of Steel Construction, dicembre 2018. http://dx.doi.org/10.18057/icass2018.p.116.

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Portela, Genock, Ulises Barajas e Jose A. Albarran-Garcia. Analysis and Load Rating of Pre-flex Composite Beams. Fort Belvoir, VA: Defense Technical Information Center, settembre 2011. http://dx.doi.org/10.21236/ada550595.

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Al-Chaar, Ghassan, Steven Sweeney, Richard Lampo e Marion Banko. Full-scale testing of thermoplastic composite I-Beams for bridges. Construction Engineering Research Laboratory (U.S.), giugno 2017. http://dx.doi.org/10.21079/11681/22641.

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Goodman, Daniel. Advanced Low-Cost Composite Curing With High Energy Electron Beams. Phase 2. Fort Belvoir, VA: Defense Technical Information Center, dicembre 1998. http://dx.doi.org/10.21236/ada358391.

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Zhu, Ting, Shenggang Fan, Yunlong Han, Runmin Ding e Yang Li. Numerical Investigation on Fire Resistance of Stainless Steel Composite Beams with Rectangular Section. The Hong Kong Institute of Steel Construction, dicembre 2018. http://dx.doi.org/10.18057/icass2018.p.134.

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Tang, Po-Yun. Bending Deformation Increase of Bending-Extension Coupled Composite Beams Bonded with Actuator(s). Fort Belvoir, VA: Defense Technical Information Center, ottobre 1995. http://dx.doi.org/10.21236/ada302002.

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Bank, Lawrence C., Anthony J. Lamanna, James C. Ray e Gerardo I. Velazquez. Rapid Strengthening of Reinforced Concrete Beams with Mechanically Fastened, Fiber-Reinforced Polymeric Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, marzo 2002. http://dx.doi.org/10.21236/ada400415.

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Ramesh, Selvarajah, Lisa Choe, Mina Seif, Matthew Hoehler, William Grosshandler, Ana Sauca, Matthew Bundy et al. Compartment fire experiments on long-span composite-beams with simple shear connections part 1:. Gaithersburg, MD: National Institute of Standards and Technology, ottobre 2019. http://dx.doi.org/10.6028/nist.tn.2054.

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Choe, Lisa, Selvarajah Ramesh, Matthew Hoehler, Mina Seif, Matthew Bundy, John Reilly e Branko Glisic. Compartment fire experiments on long-span composite-beams with simple shear connections part 2:. Gaithersburg, MD: National Institute of Standards and Technology, novembre 2019. http://dx.doi.org/10.6028/nist.tn.2055.

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Rafeeq, Ranj. Torsional Strengthening of Reinforced Concrete Beams Using CFRP Composites. Portland State University Library, gennaio 2000. http://dx.doi.org/10.15760/etd.3121.

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