Protection of Aircraft Lattice Shell Made of UD CFRP Ribs from Low-Velocity Impacts

Kondakov, Ivan; Чернов, А. В.; Shanygin, A. N.; Сапожников, С. Б.

doi:10.1007/s11029-022-09994-1

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…Composite lattice structure can improve the weight efficiency and load-carrying capacity of the fuselage structure. Kondakov et al 42,43 F I G U R E 3 Interlock assembly composite lattice grid material. Reproduced with permission.…”

Section: Composite Lattice Grid Materialsmentioning

confidence: 99%

“…Composite lattice structure can improve the weight efficiency and load‐carrying capacity of the fuselage structure. Kondakov et al 42,43 applied a composite lattice grid to a civil aircraft fuselage and investigated the resistance of the structure to low‐speed impact. It was found that the impact resistance of the lattice grid structure was low and additional protective structures needed to be used.…”

Section: Impact Of Composite Lattice Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Design, fabrication, and dynamic mechanical responses of fiber‐reinforced composite lattice materials

Xiong,

Gong,

et al. 2023

Int Journal of Mech Sys Dyn

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Fiber‐reinforced composites are a popular lightweight materials used in a variety of engineering applications, such as aerospace, architecture, automotive, and marine construction, due to their attractive mechanical properties. Constructing lattice materials from fiber‐reinforced composites is an efficient approach for developing ultra‐lightweight structural systems with superior mechanical properties and multifunctional benefits. In contrast to corrugated, foam, and honeycomb core materials, composite lattice materials can be manufactured with various architectural designs, such as woven, grid, and truss cores. Moreover, lattice materials with open‐cell topology provide multifunctional advantages over conventional closed‐cell honeycomb and foam structures and are thus highly desirable for developing aerospace systems, hypersonic vehicles, long‐range rockets and missiles, ship and naval structures, and protective systems. The objective of this study is to review and analyze dynamic mechanical behavior performed by different researchers in the area of composite lattice materials and to highlight topics for future research.

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Section: Composite Lattice Grid Materialsmentioning

confidence: 99%

Section: Impact Of Composite Lattice Materialsmentioning

confidence: 99%

Design, fabrication, and dynamic mechanical responses of fiber‐reinforced composite lattice materials

Xiong,

Gong,

et al. 2023

Int Journal of Mech Sys Dyn

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show abstract

“…Under the impact of instantaneous loads, for example, in the case of a low-speed impact of aircraft mesh shell protection pads, elastoplastic reinforcement bars should be used between the aerodynamic sheath and the bearing lattice. Kondakov et al [28] established a calculation model of UD carbon fiber reinforcement bars under an immediate load impact using finite-element simulations. However, the finite-element method only provides simulation analysis and not a design process.…”

Section: Introductionmentioning

confidence: 99%

Rib Reinforcement Bionic Topology Optimization under Multi-Scale Cyclic Excitation

Xiao

Zhu

et al. 2023

Mathematics

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Thin-walled structures have problems such as low stiffness, large deflection, and vibration. The layout of rib reinforcement in thin-walled structures plays a vital role in providing structural strength and rigidity and reducing structural weight. A multi-scale bionic topology optimization method with a cyclic variable load is proposed in this paper to optimize dynamic flexibility by simulating the growth law of leaf vein formation and distribution. A material interpolation method is adopted to penalize the material attributes of rib reinforcement according to their thickness, based on polynomial interpolation. Combined with the layout of rib reinforcement and SIMP, the mathematical model of rib reinforcement layout optimization with cyclic variable loading is proposed, and the sensitivity of thin-walled dynamic flexibility to the rib reinforcement thickness is analyzed. Two typical examples of thin-walled structures are presented to validate the proposed method. Considering the impact effect of multi-scale cyclic loads such as wind speed, pressure, and raindrops acting on the leaf vein, the natural frequencies of bionic topological structures of heart-shaped and elliptical leaf veins are increased by 63.44% and 47.2%, respectively. Considering the change in radial thickness, the mass of the automotive door inner panel with a bionic topological structure increased by 3.2%, the maximum stress value was reduced by 1.4% and 36.8%, and deformation was reduced by 37.6% and 27.1% under the anti-concave and sinking conditions, respectively. Moreover, the first-order natural frequency of the automotive door’s inner panel with a bionic topological structure increased to 30.45%, 3.7% higher than the original.

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Basic principles for creating light, efficient and safe structures for the next generation supersonic transport

et al. 2023

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Protection of Aircraft Lattice Shell Made of UD CFRP Ribs from Low-Velocity Impacts

Cited by 4 publications

References 9 publications

Design, fabrication, and dynamic mechanical responses of fiber‐reinforced composite lattice materials

Design, fabrication, and dynamic mechanical responses of fiber‐reinforced composite lattice materials

Rib Reinforcement Bionic Topology Optimization under Multi-Scale Cyclic Excitation

Basic principles for creating light, efficient and safe structures for the next generation supersonic transport

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