Beetle elytron plate and the synergistic mechanism of a trabecular-honeycomb core structure

Chen, Jinxiang; Zhang, Xiaoming; Okabe, Yoji; Xie, Juan; Xu, Mengye

doi:10.1007/s11431-018-9290-1

Cited by 60 publications

(35 citation statements)

References 13 publications

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“…Then, when η>0.15, the energy absorption begins to show a slow downward trend. To facilitate comparison, Figure 4(c) and (d) shows the corresponding curves for EBEPs as reported previously [29]. As seen in Figure 4, their compressive strengths and energy absorption capacities increase rapidly as η increases from 0 to 0.1.…”

Section: Resultsmentioning

confidence: 60%

“…The experimental results for compressive tests of BEPs with various values of ƞ, in which B means beetle elytron plate and H means honeycomb plate. (a, b) MBEPs (trabeculae are distributed in the middles of the walls) and (c, d) EBEPs (trabeculae are distributed at the intersections of the walls) [29]. (a, c) Stress–strain curves, where the dot indicates the position on each curve where the core stress is equal to 85% of its maximum.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, Chen et al. verified the anti-compressive shared mechanism of the trabecula honeycomb structure in aforementioned bionic honeycomb plate proposed in 2003 and defined it as the beetle elytron plate [29]. In addition, the influences of the dimensions of the core structure and preparation methods on the mechanical properties of BEPs were investigated [29,30].…”

Section: Introductionmentioning

confidence: 99%

“…Approximately 10% of the trabeculae are located in the middle of the honeycomb walls. In previous research [29], trabeculae were placed solely at the intersection of the walls when designing models (we define it as the end-trabecular beetle elytron plate, namely, the EBEP). Thus, there has been no study of BEPs in which the trabeculae are distributed in the middles of the walls (we define it as the middle-trabecular beetle elytron plate, namely, the MBEP).…”

Section: Introductionmentioning

confidence: 99%

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The compressive properties and strengthening mechanism of the middle-trabecular beetle elytron plate

Chen

et al. 2018

Jnl of Sandwich Structures & Materials

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For the development of new types of lightweight sandwich structures, the compressive properties and strengthening mechanism of the middle-trabecular beetle elytron plate were investigated for various values of η (the ratio of the trabecular radius to the honeycomb wall length). The results are as follows: (1) When η = 0.1, the increases in the compressive strength and standard energy absorption capacity of the middle-trabecular beetle elytron plate compared with the honeycomb plate exceed those of the end-trabecular beetle elytron plate; with an increase to η = 0.15, the compressive strength remains nearly the same, the energy absorption capacity undergoes a significant further increase, and the trabeculae exhibit Φ-type failure. (2) The strengthening mechanism that gives rise to the compressive properties of the middle-trabecular beetle elytron plate is proposed as follows: the trabeculae are located at the center of the honeycomb walls, where the maximum deformations would otherwise occur; they constrain the deformation of the honeycomb walls; and the number of trabeculae in the middle-trabecular beetle elytron plate also exceeds that in the end-trabecular beetle elytron plate. (3) Middle-trabecular beetle elytron plates have the advantage of facile manufacturing, which will establish a basis for promoting the application of beetle elytron plates.

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Section: Resultsmentioning

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The compressive properties and strengthening mechanism of the middle-trabecular beetle elytron plate

Chen

et al. 2018

Jnl of Sandwich Structures & Materials

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“…The honeycomb structure that bees create is a very reasonable spatial structure. [1][2][3][4][5][6][7][8][9] A composite aluminium alloy honeycomb panel (the aluminium honeycomb core that is sandwiched between the upper layer and the lower layer of aluminium alloy sheets) has the advantages of light weight, high stiffness, and noise and heat insulation. [10][11][12][13][14] The panel is a typical representative of a highperformance sheet material; it is extensively employed in aviation, high-speed trains, ships and other fields.…”

Section: Introductionmentioning

confidence: 99%

The mechanical behaviour of new long-span hollow-core roofs based on aluminum alloy honeycomb panels

Zhao¹,

Ma²,

Du³

2019

Mater. Tehnol.

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This article proposes a new type of spatial structure that is based on the principle of an aviation structure skin force bearing. The structure consists of honeycomb panels and specialized connecting pieces to spatially combine the honeycomb panels and form a novel skeleton-free hollow-core roof system (referred to as a "honeycomb panel structural system" (HPSS)). To evaluate the stitching results of the new structure, its connection performance, failure mechanism and limiting load were examined, and the full-scale samples that were designed and manufactured from two sets of HPSS were employed to conduct the experimental research. The results indicated that the new structure has a high spatial stiffness and loading capacity. The failure mode of the two test specimens comprises the shear damage of the connector and the buckling failure of the honeycomb panel. The existing rectangular sandwiched honeycomb panel buckling theory cannot correctly reflect the plastic deformation or failure of the sandwiched material, this paper obtained the analysis method for the honeycomb panel buckling characteristic value that is consistent with practical conditions. Using different simulation methods, the comparative analysis results revealed that the finite-element coupling method proposed in this paper can adequately simulate the actual operating state of the connector between two honeycomb panels. This method is feasible, highly efficient, and provides a theoretical basis for future revision of the design rules for this new type of spatial structure.

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The compressive property of a fiber‐reinforced resin beetle elytron plate and its influence mechanism

Chen

Pan

et al. 2021

J of Applied Polymer Sci

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To develop composite material beetle elytron plates (BEPs), short basalt fiberreinforced epoxy resin BEPs with hollow trabeculae and honeycomb walls were fabricated exploratively. Through comparison with honeycomb plates (HPs) with the same wall thickness, the basic mechanical performance, failure mode and influence mechanism were studied via out-of-plane compression tests. The results show that compared with HPs, the specific strength and energy consumption per volume of BEPs can be at least 18% and 112% higher, respectively; however, the increase is less than half that of BEPs made of ductile materials. The former is due to the synergistic mechanism of the trabecular-honeycomb structure in the BEP core layer, which endows the composite BEPs with better ductility than HPs, while the latter is caused by the prominent brittleness of the composite material used in this study. Additionally, the height-to-thickness ratio of the plate honeycomb wall in this article is not large enough. Thus, the core has great rigidity and fails to buckle in experiments; instead, shear failure of the core material occurs. This study reveals for the first time the mechanical compression properties and failure mechanism of brittle material BEPs and shows a direction for developing BEPs in similar material types.

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Beetle elytron plate and the synergistic mechanism of a trabecular-honeycomb core structure

Cited by 60 publications

References 13 publications

The compressive properties and strengthening mechanism of the middle-trabecular beetle elytron plate

The compressive properties and strengthening mechanism of the middle-trabecular beetle elytron plate

The mechanical behaviour of new long-span hollow-core roofs based on aluminum alloy honeycomb panels

The compressive property of a fiber‐reinforced resin beetle elytron plate and its influence mechanism

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