Designing pro‐composite truss layout for load‐bearing aircraft structures

Shanygin, A. N.; Dubovikov, Evgeny; Fomin, V.; Mareskin, Ivan; Zichenkov, Mikhail

doi:10.1111/ffe.12695

Cited by 13 publications

(10 citation statements)

References 5 publications

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“…With respect to the third variant, the weight estimation was performed in parallel with the development of a manufacturing model of the double-lattice panel. In [6,7], it was shown that double-lattice pressurized panels, as described above, could create a low-weight airframe for the BWB with a high operational reliability. The application of such panels can therefore become the solid foundation for significant improvement in the transport efficiency of future aircraft by using the BWB concept.…”

Section: Critical Strength Tasks Of Bwb Airframesmentioning

confidence: 99%

“…The root of the problem of the BWB concept's low weight efficiency are the expenses related to high weight efficiency, namely, the costs needed to ensure the proper strength characteristics of high-loaded pressurized low-curvature (flat) panels. One solution to this problem was proposed in [6][7][8] based on double-lattice composite panels.…”

Section: Introductionmentioning

confidence: 99%

“…Structural parameters of the double-lattice panel details were defined by taking into account the 109 manufacturing constraints for the following composite manufacturing processes: fiber placement and 110 wet winding. The design analysis was carried out using a four-level algorithm, developed at the 111 TsAGI for the strength analysis and design of such metal-composite structures[6,11]. The algorithm 112 was validated within a number of Russian (domestic) and European FP6-FP7 projects.…”

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confidence: 99%

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Manufacturing Aspects of Creating Low-Curvature Panels for Prospective Civil Aircraft

et al. 2019

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For this study, structural and manufacturing schemes for low-curvature pressurized fuselage panels were proposed, making it possible to provide high weight efficiency for the airframes of prospective civil blended wing-body (BWB) aircraft. The manufacturing scheme for low-curvature panels helped to achieve high strength characteristics of the composite details as well as decreased the labor input necessary for manufacturing and assembling. The beneficial features of the proposed structure are that the panels have a low weight, incur low manufacturing costs, and satisfy the demands of repairability.

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Section: Critical Strength Tasks Of Bwb Airframesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Manufacturing Aspects of Creating Low-Curvature Panels for Prospective Civil Aircraft

et al. 2019

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“…Compared with traditional metal materials, carbon fiberreinforced composites have such advantages as large specific strength, high specific modulus, high damping, and strong designability [13,[16][17][18]. Currently, the structure forms of CFRP applied to vibration isolation are mostly of the trusstype structure, including satellite, spaceship, and other aerospace structures [9,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Design and Vibration Isolation Performance of Truss‐Type CFRP Raft Frame

Wen

Wen-hu

Fang

et al. 2019

Shock and Vibration

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Traditional raft frame is single in the form of materials and structures. To give full play to its vibration isolation performance, a truss-type CFRP (carbon fiber-reinforced plastics) raft frame was designed and prepared. Based on the composite material mechanics and damping strain energy model, a method combining the finite element simulation and experiment was used to calculate the damping of the designed CFRP truss structure. The modal harmonic response analysis of CFRP truss structure was carried out by virtue of the ABAQUS finite element software to explore the influence of structure parameters on the vibration transmission characteristics of CFRP truss structure and provide reference for the design of a truss-type CFRP raft frame. The truss-type CFRP floating raft vibration isolation platform was established. Given different excitation sources, the truss-type CFRP raft frame designed in this paper was demonstrated to have good vibration isolation effect in most frequency bands by analyzing the acceleration-vibration level differences.

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“…Implant structure made of titanium alloy, proposed by D. Pasini, McGill University, 9 provides allowable level of contact loads between the implant and the bone tissue, that minimizes the stress concentrations and by that prevent failure of the bone tissue during exploitation of the implant. One of feasible applications of the proposed ''soft'' joint in aircraft structures is the structure of metalcomposite joint of ''clamp'' type 10 (Figure 12). Metallic part of the joint is placed (like a clamp) on the rod composite element and allows to transfer loads, perpendicular to the main axis of the composite element.…”

Section: Introductionmentioning

confidence: 99%

Lightweight and reliable metal–composite joints based on harmonization of strength properties of joined parts

Чернов

Fomin

Kondakov

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part G:

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One of the key problems of designing composite primary aircraft structures is the problem of development of lightweight and reliable joints for such structures. For conventional bolted joints used for connection of laminated composite primary structure elements, the loads are transferred via the contact of metallic and composite parts having considerably different strength and stiffness parameters. As the local strength properties of composites are defined by polymer resins, having several times less strength as compared to the metallic alloys, the maximal load that can be transferred via the joint is limited by the properties of resins. As a consequence, the metallic parts of such joints are loaded to a very low extent, that causes low weight efficiency. In the presented paper, the approach to development of metal-composite joints based on the principle of harmonization is proposed. The harmonization principle is to minimize the disbalance of strength properties of metallic and composite parts in the local zones of contact. This principle can be realized by two ways: either by removing the resin from the zone of contact to increase local stiffness of composite part (''stiff'' joint concept) or by creation of metallic part with porous structure to decrease local stiffness of the metallic part (''soft'' joint concept). In this paper, the evaluation of both concepts is given, based on numerical and experimental investigations carried out in this work.

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Designing pro‐composite truss layout for load‐bearing aircraft structures

Cited by 13 publications

References 5 publications

Manufacturing Aspects of Creating Low-Curvature Panels for Prospective Civil Aircraft

Manufacturing Aspects of Creating Low-Curvature Panels for Prospective Civil Aircraft

Design and Vibration Isolation Performance of Truss‐Type CFRP Raft Frame

Lightweight and reliable metal–composite joints based on harmonization of strength properties of joined parts

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