Out-of-plane crushing behavior of hybrid hierarchical square honeycombs

Wang, Zhonggang; Deng, Junjie; He, Kunning; Tao, Yong

doi:10.1016/j.tws.2022.110051

Cited by 23 publications

(4 citation statements)

References 61 publications

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“…Using the super-folding method, the energy-absorption properties of origami designs honeycombs were theoretically determined. The accuracy of the proposed model was confirmed by the error between the numerical simulations and theoretical results, which ranged from -8.55% to 6.50% [29][30][31]. In this regard, the current research explored with the influences of cell parameters of honeycomb core reinforced using numerical analysis especially for out-of-plane structures.…”

Section: Introductionmentioning

confidence: 75%

Numerical Analysis of Out-of-Plane Crushing of Reinforced Honeycomb Core and Effect of Cell Parameters on its Properties

Mohan,

Gautam,

dabral

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The non-linear finite element code LS-DYNA has been used in this work to conduct the crushing examination of both normal and reinforced honeycomb cores. The honeycomb-like cores are provided with out-of-plane quasi-static conditions of stress via an explicit dynamic approach. We have parametrically investigated the effects of cell properties on crushed behaviour as well as the absorption of energy, including the size of the cell, wall thickness, height, along with cell wall tilted position. Regular honeycomb (R0-HC), reinforced every other ribbon (R1-HC), and reinforced every ribbon (R2-HC) are three different varieties of honeycomb. The findings of the numerical analysis of these three types of honeycomb are compared to understand how reinforcing affects energy absorption and crushing parameters. The sheet material AA3003-H18 was chosen to make the honeycomb core. In comparison to ordinary honeycombs, the reinforced honeycombs demonstrated superior crushing behavior and energy absorption. In comparison to the others, reinforced every ribbon (R2-HC) type honeycombs exhibited the greatest values for crushing characteristics and energy absorption. The crushing characteristics and energy absorption of reinforced every other ribbon (R1-HC) honeycombs were higher than those of ordinary honeycombs (R0-HCThe crushing force, average plateau force, and energy absorption values decrease as the cell size, height, and wall angle are increased, however, all these crushing characteristics increase as the cell wall thickness is increased.

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Section: Introductionmentioning

confidence: 75%

Numerical Analysis of Out-of-Plane Crushing of Reinforced Honeycomb Core and Effect of Cell Parameters on its Properties

Mohan,

Gautam,

dabral

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…This is the case because under the same boundary conditions, honeycombs of the same cross-sectional area are found to have similar peak force. [19,63] As illustrated in Figure 12, MCF and SEA are determined at a strain of 0.7. The MCF is seen to increase as the order of hierarchy increases.…”

Section: Comparison With the Regular Honeycombmentioning

confidence: 99%

Effect of Hierarchical Geometries Matching on the Crashworthiness of Honeycomb

et al. 2023

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The demand for lightweight engineering structures to serve as structural components and energy absorbers has been on the rise in recent times. [1][2][3][4][5][6] As a typical engineering material, cellular structures have been extensively applied in several fields, including railway, [7] structural engineering, [8] aviation, [9] and biomedical field. [10] The application of cellular structures is attributed to specific desired properties, including lightweight, high energy absorption capacity, excellent impact resistance, and high strength-to-weight ratios. [11,12] Cellular structures take the form of either honeycomb (which is a two-dimensional array of identical prismatic cells that nest together to fill a plane) or foam (a polyhedral three-dimensional cell that packs together to fill space). [5] The mechanical properties and crashworthiness of cellular structures mainly depend on their geometric configuration and base material properties. [13,14] By taking advantage of the flexibility in geometric configurations, continuous research is being done on cellular structures with experimental, numerical, and theoretical approaches to achieve desired and tailorable mechanical properties. [15][16][17] These researches attempt to improve further the mechanical properties of the cellular structures for better and broader application scope. Consequently, some promising areas relating to cellular structures have been gaining lots of attention, including hierarchical cellular structures, [18][19][20][21] multicell tubes, [18,22] functionally graded structures, [23] corrugated tubes, [24] metamaterial structures, [25][26][27] multicornered structures, [28] and staggered cellular structure. [29] The development of industries toward more efficient performance has led to the continuous desire for improved lightweight and better energy absorption properties. Honeycombs with structural hierarchy have shown promising potential to offer excellent crashworthiness characteristics.Materials possessing structural hierarchy have been extensively observed in nature, [19,30] as can be seen in beetle elytron, [31] spider web, [32] bone, [33] tendon, [34] bamboo, [35] pomelo peel, [36] and grass stem. [37] Excellent crashworthiness is attributed to the hierarchical strategy, which has inspired the design of several novel honeycomb structures possessing superior mechanical properties. [38,39] Hierarchical structures are cellular materials composed of secondary substructural components having a complete structure. [40] In a broad sense, structural hierarchy can be achieved in two primary forms. [20] They are the vertex-based hierarchy (which is developed by replacing the vertices of the parent structure with substructures) and the edgebased hierarchy

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“…As has been discussed above, both hierarchical design approaches can enhance the mechanical properties of honeycombs [ 27 ]. Hence, for better mechanical properties, the hybrid hierarchical square honeycomb (HHSH) combining the geometric features of both edge- and vertex-based hierarchy was investigated by Tao et al [ 28 ]. The results demonstrated that compared with RSH and edge-based hierarchical square honeycomb, the HHSH provided the most excellent crushing performance.…”

Section: Introductionmentioning

confidence: 99%

In-Plane Elastic Properties of 3D-Printed Graded Hierarchical Hexagonal Honeycombs

Tao,

Zhao,

Shi

et al. 2024

Polymers

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In this study, the graded hierarchical hexagonal honeycomb (GHHH) integrating gradient design and hierarchical design was fabricated using the 3D-printing technique, and its in-plane elastic properties were investigated theoretically, experimentally, and numerically. Theoretical solutions were developed based on the Euler beam theory to predict the effective elastic modulus and Poisson’s ratio of GHHH, and theoretical values were in good agreement with the experimental and numerical results. The effect of gradient design and hierarchical design on the in-plane elastic properties of GHHH was also analyzed and compared. Results showed that the hierarchical design has a more significant effect on Poisson’s ratio and adjusting the internal forces of GHHH compared with the gradient design. In addition, it was found that GHHH exhibited higher stiffness compared with regular hexagonal honeycomb (RHH), graded hexagonal honeycomb (GHH), and vertex-based hierarchical hexagonal honeycomb (VHHH) under the constraint of the same relative density, respectively. Specifically, the effective elastic modulus of GHHH can be enhanced by 119.82% compared to that of RHH. This research will help to reveal the effect of integrating hierarchical design and gradient design on the in-plane elastic properties of honeycombs.

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Out-of-plane crushing behavior of hybrid hierarchical square honeycombs

Cited by 23 publications

References 61 publications

Numerical Analysis of Out-of-Plane Crushing of Reinforced Honeycomb Core and Effect of Cell Parameters on its Properties

Numerical Analysis of Out-of-Plane Crushing of Reinforced Honeycomb Core and Effect of Cell Parameters on its Properties

Effect of Hierarchical Geometries Matching on the Crashworthiness of Honeycomb

In-Plane Elastic Properties of 3D-Printed Graded Hierarchical Hexagonal Honeycombs

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