Optimization of hybrid aluminum/cfrp box beams

Triantafillou, Thanasis; Kim, P.; Meier, Urs

doi:10.1016/0020-7403(91)90068-e

Cited by 15 publications

(6 citation statements)

References 2 publications

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“…If CFRPs are applied to the space truss structure, the angle and direction of the ply layer can be designed based on the specific type of force borne and the design requirements, and can be arranged reasonably to ensure that the fiber direction is consistent with the axial load direction. This concept has been used to effectively improve the design freedom of truss structures (Cai and Aref, 2015;Triantafillou et al, 1991;Xiao et al, 2020). The method maximizes the material strength, reduces the weight of the truss, and realizes the optimal lightweight design goal (Liu et al, 2020(Liu et al, , 2022Vitale et al, 2020;Zhang and Yanagimoto, 2021;Zhang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Structural design and experimental study on the axial compression behavior of large-span carbon-fiber-reinforced polymer truss structures

Li,

Chen,

et al. 2023

Advances in Structural Engineering

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Herein – with the optimization goals of a lightweight, large-span structure; modularization; and heavy loading – a tapered-section truss module and standard truss module are integrated and assembled, yielding a new design for an all-carbon-fiber-reinforced polymer (CFRP) truss structure. The design structure fully considers the mechanical characteristics of the truss and the requirements of standardized production efficiency, integrating the “fish keel” structural design method to give it a hollow structure style. By fabricating two 1:1 truss structures (A-Truss and B-Truss) with a length of 20.4 m, the conceptual design, modular design method, and integrated assembly technology of the truss structure were effectively verified; further, experimental research on the strength performance of the mold-clave-forming plate-type joint and the axial compression behavior of large-span full CFRP truss structure is carried out. The failure position of the truss structure is determined, and an enhancement measure for the key connection joint between the truss modules is proposed. Based on specific application scenarios, it is clear that the truss meets the design requirements in terms of bearing capacity and deformation, and can be used as the main bearing structure of large aircraft and aerospace assembly platforms.

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Section: Introductionmentioning

confidence: 99%

Structural design and experimental study on the axial compression behavior of large-span carbon-fiber-reinforced polymer truss structures

Li,

Chen,

et al. 2023

Advances in Structural Engineering

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“…Since the 1990s, some scholars have explored the possibility of minimizing the beam weight while ensuring the performance of the straight tubes. This could be primarily achieved by using polymer matrix composites in combination with a lightweight aluminum alloy: the studies by Triantafillou [12] and Broughton [13] laid the foundation for this approach. The aluminum alloy/carbon fiber-reinforced polymer (CFRP) composite tube beam was prepared by attaching a unidirectional carbon fiber-reinforced epoxy matrix composite to the upper and lower surfaces of the hollow aluminum alloy square tube by Triantafillou.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Finite Element Analysis of Composite Elbows

Qiao

Zhang

Ye³

et al. 2019

Materials

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“Tube beams” are common lightweight structures, which have domestic and industry applications, and are often subjected to complex multidirectional loads. Therefore, metals with mature manufacturing methods and isotropic properties are commonly used in the fabrication of these structures, which are preferred to be lighter in weight. Although polymer matrix composites are generally used for weight reduction, their conventional manufacturing methods, such as pultrusion and filament-winding, cannot meet the isotropic requirements. Moreover, research on bent tube beams (elbows) is rare. Therefore, a self-made glass fiber/epoxy polyvinyl ester fabric prepreg and a self-designed mold were used in this study to prepare an isotropic composite double-bent elbow by a silicone rubber airbag-assisted process. The load capacity of the elbow was tested and validated by the finite element method. A strength and deformation of up to 3448 N and 2.84 mm respectively, were achieved. The simulation and experimental results were consistent: the error for the load capacity and deformation was only 4.15% and 7.75% respectively, under the max stress criterion.

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“…During weight minimization of pressure vessels, a lower limit may be imposed on the burst pressure. 973 Similarly, structural performance constraints are applied, if other failure modes are likely to be critical such as local or global buckling, 7,30,35,42,43,47,51,53,84,87,88,90,92,104,107,108,122,123,144,150,165,166,171,178,188,198,207,208,213,222,244,248,249,254,258,265,267,268,276,277,286,321,328,344,363,375,388,390,400,404,405,415,423,437,448,495,497,511,516,518,520,…”

Section: Introductionmentioning

confidence: 99%

“…,12,18,25,28,34,38,42,47,49,59,84,122,123, 127-129,131,143,145,146,156,165,200,222,225,227,238,240,256,258,261, 265,269,272,282,283,293,315,344,351,360,403,410,412,413,419,422,423, 437,469,470,476,498,500,503,520,530,552,563,565,568,583,592,595,607, 615,620,632,640,641,674,665,724,726,741,745,761,765,771,793,802,812, 848,858,860,861,876,884,911,913,915,923,944,965,970,977,992,1004 twist angle, 217,741,913 curvatures, 324,588 laminate strain components, " xx , " yy , or xx , 192,226,404,491,495,637,717,727, 761,836,859,897,912,922,981 strain energy,820,876,953 or a lower limit on extensional stiffness terms, A ij ,17,35,113,198,317,543,554,589 transverse shear stiffness,113,925 torsional and/or bending stiffness,62,71,81,93,96,105,106,176,178, 230,274,292,554,747,825 axial stiffness,566,947 prebuckling and/or postbuckling stiffness,686 elastic moduli,86,95,110, 117,162,291,377,378,386,408,424,431,514,545,747,1002 stiffness coefficients, 427 bulk modulus,…”

mentioning

confidence: 99%

Optimum Design of Composite Structures: A Literature Survey (1969–2009)

Sonmez

2016

Journal of Reinforced Plastics and Composites

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Optimum structural design of composites is a research subject that has drawn the attention of many researchers for more than 40 years with a growing interest. In this study, a review of the literature on this subject is presented. The papers are classified according to the type of the composite structure optimized in those studies, the loading conditions, the objective function, the structural analysis method, the design variables, the constraints, the failure criteria, and the search algorithm used by the researchers.

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Optimization of hybrid aluminum/cfrp box beams

Cited by 15 publications

References 2 publications

Structural design and experimental study on the axial compression behavior of large-span carbon-fiber-reinforced polymer truss structures

Structural design and experimental study on the axial compression behavior of large-span carbon-fiber-reinforced polymer truss structures

Fabrication and Finite Element Analysis of Composite Elbows

Optimum Design of Composite Structures: A Literature Survey (1969–2009)

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