Compressive failure modes and parameter optimization of the trabecular structure of biomimetic fully integrated honeycomb plates

Chen, Jinxiang; Tuo, Wanyong; Zhang, Xiaoming; He, Chenglin; Xie, Juan; Liu, Chang

doi:10.1016/j.msec.2016.06.087

Cited by 31 publications

(14 citation statements)

References 31 publications

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“…要考察倒角中圆弧的直径, 为蜂窝壁厚度的多少倍时既获得较好的应力缓解效果, 又不至于用太多的材料 [93] . 正巧我们早期测定了独角仙前翅中层之间过渡圆弧直径与小柱直径之比ξ(图21(a)和(b)) [60] .…”

Section: 倒角比没有倒角能缓解应力集中因此研究的重点是unclassified

“…(图22): 蜂窝壁薄, 倒角小时对蜂窝壁的约束不大(图 22(a1)), 缓和应力的效果弱(图21(c), I 1 , II 1 ); 而当蜂窝壁厚, 倒角大时(图22(b2)), 所起应力缓和效果的速度减慢(图21(c), I 3 , II 3 ) [93] . 而在前翅结构中, 其小柱直径小时采用了较大的ξ, 相反却采用了较小的ξ(图22(b)).…”

Section: 对前述的解析结果首先可做如下的物理解释unclassified

“…这样可得到不同小柱直径下缓和效果较为接近的效果. 即圆满解释了(图21(b))中ξ与直径之间的分布关系, 同时也探明了为什么独角仙前翅小柱和层之间圆弧过图 20 (网络版彩图)仿生一体化蜂窝板压缩的荷载-位移曲线 [93] .…”

Section: 对前述的解析结果首先可做如下的物理解释unclassified

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Biomimetic research on beetle forewings in twenty years: Internal structure, model and integrated honeycomb plates

Chen

2018

Sci. Sin.-Tech.

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Section: 倒角比没有倒角能缓解应力集中因此研究的重点是unclassified

Section: 对前述的解析结果首先可做如下的物理解释unclassified

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Biomimetic research on beetle forewings in twenty years: Internal structure, model and integrated honeycomb plates

Chen

2018

Sci. Sin.-Tech.

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“…[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. [15][16][17][18] This article presents a new type of spatial structure that consists of honeycomb panels, i.e., the use of specialized connectors for an aluminum honeycomb panel space assembly to construct a "novel, skeleton-free, hollow-core, roof system" that does not have any loadbearing rods 19 (referred to as a "honeycomb panel structural system" (HPSS)). The basic configuration of the system is equivalent to an enlarged honeycomb panel, as shown in Figure 1a.…”

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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“…Based on the characteristics of a lightweight beetle forewing structure [5,6], Chen et al developed an integrated biomimetic honeycomb sandwich structure [7,8], which has advantages, such as cementing free, single cast forming, and excellent mechanical properties [6,9]. Currently, this plate is composed of reinforced basalt fibre epoxy resin composite material; the thickness of the honeycomb wall is approximately 2 mm [10]. By comparison, the thickness of the honeycomb core wall of the aluminium alloy honeycomb sandwich structure is approximately 0.05 mm, which is approximately 1/40 of the former.…”

Section: Introductionmentioning

confidence: 99%

The Stability of New Single-Layer Combined Lattice Shell Based on Aluminum Alloy Honeycomb Panels

Zhao

2017

Applied Sciences

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This article proposes a new type of single-layer combined lattice shell (NSCLS); which is based on aluminum alloy honeycomb panels. Six models with initial geometric defect were designed and precision made using numerical control equipment. The stability of these models was tested. The results showed that the stable bearing capacity of NSCLS was approximately 16% higher than that of a lattice shell with the same span without a reinforcing plate. At the same time; the properties of the NSCLS were sensitive to defects. When defects were present; its stable bearing capacity was decreased by 12.3% when compared with the defect-free model. The model with random defects following a truncated Gaussian distribution could be used to simulate the distribution of defects in the NSCLS. The average difference between the results of the nonlinear analysis and the experimental results was 5.7%. By calculating and analyzing nearly 20,000 NSCLS; the suggested values of initial geometric defect were presented. The results of this paper could provide a theoretical basis for making and revising the design codes for this new combined lattice shell structure.

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Compressive failure modes and parameter optimization of the trabecular structure of biomimetic fully integrated honeycomb plates

Cited by 31 publications

References 31 publications

Biomimetic research on beetle forewings in twenty years: Internal structure, model and integrated honeycomb plates

Biomimetic research on beetle forewings in twenty years: Internal structure, model and integrated honeycomb plates

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

The Stability of New Single-Layer Combined Lattice Shell Based on Aluminum Alloy Honeycomb Panels

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