Determination of load-carrying capacity in panels with chevron-type cores

Kayumov, R. A.; Zakirov, I. M.; Alekseev, K. P.; Алексеев, К. А.; Zinnurov, R. A.

doi:10.3103/s1068799807040022

Cited by 10 publications

(5 citation statements)

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“…Furthermore, many research studies have provided mathematical and analytical models for the origami folded cores, including computer simulations and finite element analysis [5,7]. Extensive work has been carried out in the progress and development of folded cores in Tupolev State Technical University [10][11][12][13][14], in which different folded cores with different folding patterns have been investigated for mechanical properties and engineering applications [3]. Alekseev [15] has presented a simulation of geometrical parameters of both regular and irregular folded cores using CAD systems for designing the structure.…”

Section: Introductionmentioning

confidence: 99%

Development and modeling of multi-phase polymeric origami inspired architecture by using pre-molded geometrical features

Kshad¹,

Naguib²

2016

Smart Mater. Struct.

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Section: Introductionmentioning

confidence: 99%

Development and modeling of multi-phase polymeric origami inspired architecture by using pre-molded geometrical features

Kshad¹,

Naguib²

2016

Smart Mater. Struct.

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“…Nevertheless, analytical approaches have been developed to estimate the core shear stiffness [15] as well as the lateral load carrying capabilities [16] of folded cores with constant thickness.…”

Section: Numerical Investigations To Design Wsfcmentioning

confidence: 99%

Wedge-shaped folded sandwich cores for aircraft applications: from design and manufacturing process to experimental structure validation

et al. 2011

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The problem of honeycomb sandwich structures with moisture ingression can be avoided by replacing the honeycombs through chevron-folded cores. The application to real aircraft components often requires wedgeshaped sandwich. With folded cores, this kind of geometric shape can be obtained only by special folding schemes which have a significant influence on the mechanical performance. A comprehensive experimental investigation of the relation between folding geometry and structural properties of wedge-shaped folded cores (WSFC) is very time consuming and expensive. Therefore, a procedure based on numerical methods has been developed to predict the structural response of this kind of cores under compressive and shear loading. The approach is based on a numerical tool that provides finite element models of arbitrary WSFC as well as the explicit finite element solver LS-DYNA for simulation. These tools were applied to investigate the influence of the inner core geometry and different materials on the mechanical properties of WSFC structures. To verify these results, a test programme was conducted. Test samples were manufactured using a newly developed folding process. Also special test devices to determine the compression and shear properties of the WSFC specimens were developed. The achieved test results show a good agreement with the behaviour predicted by simulation.

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“…Kayumov created a mathematical model to predict the ultimate shear load and ultimate compression load of V‐shaped folded core. [ 13 ] In the model, the material parameters are obtained by fitting and calculating the experimental data, and the influence of coating thickness on the quality and mechanical properties of paper core is considered. However, it is a pity that there are still insufficient experimental data to verify the accuracy of the formula.…”

Section: Introductionmentioning

confidence: 99%

Environmentally friendly bio‐inspired folded sandwich panels—Fabrication and mechanical behavior

et al. 2022

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A manufacturing method of folded and straight corrugated plate structure printed by environmentally‐friendly polylactic acid filled with environmentally‐friendly paraffin wax is proposed. Experimental investigations are conducted to characterize the out‐of‐plane compressive behaviors, including stress–strain curve, deformation processing, failure mode, strength, and energy absorption. By filling paraffin wax, the out‐of‐plane compression failure mode of sandwich materials from buckling (corresponding to empty corrugated sandwich panels) to wrinkling or crushing, which greatly improves the strength. Due to paraffin wax and its interaction with composite origami core, the energy absorption capacity is significantly enhanced. The research shows that the half‐filled folded corrugated sandwich structure not only has excellent specific energy absorption advantages, the paraffin wax has excellent heat absorption and release performance, and the unfilled part is just used as a heat flow channel to facilitate the flow of heat. This work has created a new method for rapid preparation of lightweight sandwich materials with not only high specific strength and high specific energy absorption, but also thermal channels.

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Determination of load-carrying capacity in panels with chevron-type cores

Cited by 10 publications

References 0 publications

Development and modeling of multi-phase polymeric origami inspired architecture by using pre-molded geometrical features

Development and modeling of multi-phase polymeric origami inspired architecture by using pre-molded geometrical features

Wedge-shaped folded sandwich cores for aircraft applications: from design and manufacturing process to experimental structure validation

Environmentally friendly bio‐inspired folded sandwich panels—Fabrication and mechanical behavior

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