Insight into the negative Poisson’s ratio effect of the gradient auxetic reentrant honeycombs

Shao, Yujie; Meng, Junhu; Ma, Guanghao; Ren, Shangjie; Fang, Liu; Cao, Xiaofei; Liu, Luwei; Li, Huimin; Wu, Wenwang; Xiao, Dengbao

doi:10.1016/j.compstruct.2021.114366

Cited by 60 publications

(12 citation statements)

References 33 publications

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“…Shao et al investigated the effect of positive and negative gradients on the mechanical properties of the re-entrant hexagonal honeycomb. [261] For positive gradient re-entrant hexagonal honeycomb (PGAH), as the compressive strain increases, the thinnest wall layer starts to shrink and leads to an increase in crushing stress. For the negative gradient re-entrant hexagonal honeycomb (NGAH), the NGAH has a lower horizontal strain and better energy absorption capacity under high-speed compression (Figure 15o).…”

Section: Auxetic Honeycombmentioning

confidence: 99%

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Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses

Dai

et al. 2023

Advanced Science

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The natural design and coupling of biological structures are the root of realizing the high strength, toughness, and unique functional properties of biomaterials. Advanced architecture design is applied to many materials, including metal materials, inorganic nonmetallic materials, polymer materials, and so on. To improve the performance of advanced materials, the designed architecture can be enhanced by bionics of biological structure, optimization of structural parameters, and coupling of multiple types of structures. Herein, the progress of structural materials is reviewed, the strengthening mechanisms of different types of structures are highlighted, and the impact of architecture design on the performance of advanced materials is discussed. Architecture design can improve the properties of materials at the micro level, such as mechanical, electrical, and thermal conductivity. The synergistic effect of structure makes traditional materials move toward advanced functional materials, thus enriching the macroproperties of materials. Finally, the challenges and opportunities of structural innovation of advanced materials in improving material properties are discussed.

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Section: Auxetic Honeycombmentioning

confidence: 99%

“…Copyright 2022, Elsevier Ltd. o) Schematic diagram of the positive gradient re-entrant honeycomb (PGAH) and negative gradient re-entrant honeycomb (NGAH). Reproduced with permission [261]. Copyright 2021, Elsevier Ltd.…”

mentioning

confidence: 99%

Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses

Dai

et al. 2023

Advanced Science

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“…An explicit method is used as the model is dynamic loading, nonlinearity, and high discontinuity in the solution such as impact or failure simulation, especially in a three-dimensional model. In (5) is the explicit method (6) is the dynamic equilibrium (7) is the central-difference method equation.…”

Section: Explicit Time Integrationmentioning

confidence: 99%

Finite element procedure to simulate sandwich structure with an auxetic core under impact loading using ABAQUS/Explicit

Pratama

Jusuf

Yudhanto

et al. 2023

IJAAS

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<span>A sandwich structure with an auxetic core is promising in improving the performance of a sandwich structure by implying an auxetic core as its core to combine the advantages of the two structures, e.g., sandwich structure’s superior ability in flexural and shear resistance, auxetic structure in localizing damage, and densification phenomena. This paper discusses a finite element modeling procedure to simulate a sandwich structure with a heterogeneous re-entrant auxetic core. The material of the face is a unidirectional carbon fiber reinforced polymer (UD CFRP) and the core is polylactic acid (PLA). The model is subjected to a low-velocity impact loading and is run through the ABAQUS/Explicit software. We found that the model we developed here could simulate up to the elastic region and identify which element had failed. However, it could not fully resemble and represent the model from reference, where fracture or damage does not occur. This model can be further improved in its material modeling strategy, especially in the fracture modeling of the composite face with compatible material properties in all required sectors, especially damaged sections, which are strictly necessary.</span>

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“…The chiral structure is the superlative structure for this empirical work in both testing mechanisms. Y. Shao [11] executed a job about experimental (Dynamic Compression) and FEM simulation study about two different auxetic honeycomb structures (Positive and Negative Gradient Honeycomb examined with the compression test. Implications infer that a new deformation mechanism was founded with different compressive velocities and properties.…”

Section: Introductionmentioning

confidence: 99%

Investigation of The Effect of Geometry Inner Thickness on New Designed Auxetic Structure

ERDOĞAN

Toktaş

2023

Politeknik Dergisi

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Poisson’s ratio is important mechanical property of materials and structure. Material and Structure showing negative Poisson’s ratios are called Auxetic. Properties of the Auxetic structures are very important to design the new structure, especially mechanical properties of the Auxetic materials that have structurally and functionally mission. Many researchers made experimental and theoretical works apropos this matter. In this study, the newly designed Auxetic lattice structure Poisson’s ratio was checked over via exploiting finite element analysis. 14 different lattice structures with respect to inner lattice thickness configurations are investigated. All examined structures have a negative Poisson’s ratio. Inner lattice thickness is increased; negative Poisson’s ratio values are decreased (closes to -1.) in these examined lattice structures. 4x2 lattice orientation has lowest Poisson’s ratio than 4x4 Lattice structure Poisson’s ratio, 4x2 is more Auxetic. 4.9 mm inner lattice thickness and 4x2 lattice matrix examined example has lowest Poisson’s ratio that is -0,55. Beneficial to indicate the purview of the structure on the applied force, the stiffness values and the stiffness/mass values were examined. Their energy dissipation capabilities were analyzed.

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Insight into the negative Poisson’s ratio effect of the gradient auxetic reentrant honeycombs

Cited by 60 publications

References 33 publications

Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses

Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses

Finite element procedure to simulate sandwich structure with an auxetic core under impact loading using ABAQUS/Explicit

Investigation of The Effect of Geometry Inner Thickness on New Designed Auxetic Structure

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