Analytical solution and experimental verification for the buckling failure of additively manufactured octagonal honeycombs

Zhang, Sen; Ma, Yongbin; Deng, Zichen

doi:10.1016/j.compstruct.2022.116306

Cited by 11 publications

(4 citation statements)

References 38 publications

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“…Honeycomb (Planar) lattices come in different topologies such as triangle, circle, hexagon, octagon and square. Among the different categories of lattice structures, honeycomb structures are commonly used as an infill topology for most aerospace‐related additively manufactured components, and their morphology contributes to the increased structural stability of the developed components 12,13 . However, there is limited research on the 3D printing of polymer‐based honeycomb lattices using the FFF technique.…”

Section: Introductionmentioning

confidence: 99%

A topological approach for optimizing the dimensional properties of various bioinspired periodic type honeycomb latticed carbon fiber reinforced glycol‐modified poly (ethylene terephthalate) composite materials

Mathiazhagan,

Sivakumar,

Palaniyappan

et al. 2024

Polymer Composites

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The present research efforts are directed toward investigating dimensional stability, focusing on bio‐inspired periodic honeycomb lattice structures within carbon fiber reinforced glycol‐modified poly ethylene terephthalate (PETG) composites. These samples are fabricated using extrusion‐based 3D printing, with topological parameters such as shell thickness (ST), unit cell type (UCT), wall thickness (WT), unit cell orientation (UCO), skewing angle (SA), and unit cell size (UCS) being manipulated across three different levels. The experimental findings indicate that achieving the lowest dimensional length error is attainable under specific conditions, including a smaller ST of 0.5 mm, a square UCT, a WT of 0.5 mm, a UCO of 90°, a SA of 0°, and a UCS of 4 mm. Analyzing the results with ANOVA reveals that UCT (28.82%) and WT (18.73%) exert the most significant influence on the dimensional stability response. The regression model closely aligns with experimental outcomes, with an error percentage of 3%, rendering it suitable for large‐scale customization. Under the optimized topological parameters, carbon fiber‐reinforced PETG latticed composites exhibited a dimensional length error of 0.292 mm and a compressive strength of 21.56 MPa. Fractography analysis revealed a brittle mode of fracture across all samples, indicating their stiffness and strength, especially when compared to samples with lower wall thickness. These findings suggest that the designed carbon fiber‐reinforced PETG latticed composite material holds potential for use in minor surgical orthotic and prosthetic applications.Highlights Bio‐inspired periodic honeycomb lattice structured PETG composites. Topological optimization on the dimensional properties. Taguchi optimization is performed on design‐based lattice structures. Unit cell type has highest contribution of 28.82% on dimensional properties.

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Section: Introductionmentioning

confidence: 99%

A topological approach for optimizing the dimensional properties of various bioinspired periodic type honeycomb latticed carbon fiber reinforced glycol‐modified poly (ethylene terephthalate) composite materials

Mathiazhagan,

Sivakumar,

Palaniyappan

et al. 2024

Polymer Composites

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“…Several efforts were made to analyze experimentally and numerically mechanical properties of the honeycomb structures manufactured by additive technologies. Finite element simulations and experiments on the buckling of the additively manufacturing octagonal honeycombs with and without defects were carried out in [10]. The buckling resistance of the octagonal honeycomb is better than that of the traditional hexagonal honeycomb.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of auxetic honeycombs realized via material extrusion additive manufacturing: Experimental testing and numerical studies

Uspensky,

Derevianko,

Avramov

et al. 2024

Preprint

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Combination of experimental testing and numerical analysis is suggested to determine static mechanical properties of the auxetic honeycombs realized via material extrusion. Special specimens, which consist of two honeycombs plates and three steel plates, are used to analyze experimentally shear mechanical properties of honeycombs. Shear testing is simulated using the finite elements software ANSYS. The tests on tension of honeycombs are carried out. These tests are simulated by finite elements software. Plasticity of the honeycomb material and geometrically nonlinear deformations of the honeycomb walls are accounted in honeycomb model. The experimental data and calculations results are close.

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“…Among the various categories of lattice structures, the honeycomb structures have gained a significant role as an infill for most of the space-related AM components. 12 The morphology of the planar lattice structure contributes to the increase in the topological stability of the developed AM components. 13 There is only limited research carried out towards the fabrication of polymeric planar lattice structures by FFF technique and a few of them are listed.…”

Section: Introductionmentioning

confidence: 99%

“…The honeycomb‐based lattice structures are of various types like circle, square, triangle, hexagon, octagon, and so forth. Among the various categories of lattice structures, the honeycomb structures have gained a significant role as an infill for most of the space‐related AM components 12 . The morphology of the planar lattice structure contributes to the increase in the topological stability of the developed AM components 13 .…”

Section: Introductionmentioning

confidence: 99%

Topological design factor optimization in the development of periodic‐type honeycomb lattice structure on the carbon fiber reinforced polyethylene terephthalate glycol composite

Palaniyappan,

Sivakumar,

Sikder

et al. 2023

Polymer Composites

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In most of the automobile and aerospace materials, cellular structures are extensively used due to their lightweight and high energy absorption capabilities. Naturally available animal bones and plant stems are light in weight due to their natural cellular structures. This may inspire various researchers for integrating the various lattice structures such as beam, planar, triply periodic minimal surfaces, and voronoi structures on the various structural materials. The development of lattice structures using 3D printing technology has opened up major attention towards fabricating lightweight components without any complications. In this study, the detailed crashworthiness responses such as compressive strength was optimized in terms of varying the topology‐related factors on the carbon fiber reinforced polyethylene terephthalate glycol (CF/PETG) composite. The experimentation was conducted concerning variable topology factors such as shell thickness, unit cell type, wall thickness (WT), unit cell orientation (UCO), skewing angle, and unit cell size. The model was examined and optimized by means of the Taguchi optimization technique. The crashworthiness response was analyzed using the compression test and moreover, this experimental response is used for the optimization processes. From the observation, the topology factors which contributed more for the higher compressive strength will be UCO of 65.47% and WT of 15.20%. Results of the regression study show that the R square value with concern to the compressive strength will be 92.74%. The optimized design parametric condition for CF/PETG composite established a higher compressive strength of 41.179 MPa, From the overall results, it is clear that the variation in the topology factors has developed a huge and favorable impact on the mechanical characteristics of the lattice‐structured CF/PETG polymer composite.Highlights Hexagonal Lattice structure incorporation on the carbon fiber reinforced PETG composite. Design optimization on the compressive properties. Taguchi optimization is performed on design‐based lattice structures. Unit cell orientation has higher percentage contribution on compressive strength.

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Analytical solution and experimental verification for the buckling failure of additively manufactured octagonal honeycombs

Cited by 11 publications

References 38 publications

A topological approach for optimizing the dimensional properties of various bioinspired periodic type honeycomb latticed carbon fiber reinforced glycol‐modified poly (ethylene terephthalate) composite materials

A topological approach for optimizing the dimensional properties of various bioinspired periodic type honeycomb latticed carbon fiber reinforced glycol‐modified poly (ethylene terephthalate) composite materials

Mechanical properties of auxetic honeycombs realized via material extrusion additive manufacturing: Experimental testing and numerical studies

Topological design factor optimization in the development of periodic‐type honeycomb lattice structure on the carbon fiber reinforced polyethylene terephthalate glycol composite

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