Load-rate effects on the in-plane compressive behaviour of additively manufactured steel 316L honeycomb structures

Obadimu, Solomon O.; Kourousis, Kyriakos I.

doi:10.1016/j.engstruct.2022.115063

Cited by 15 publications

(12 citation statements)

References 49 publications

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“…Hedayati et al (2016a), Panda et al (2018) and Le on-Becerra et al (2021), who employed both a numerical and an experimental analysis approach in their investigations on ME polymer honeycombs, also verified that topology can have an important impact on compressive performance. The effect of cell size of ME Steel 316L honeycombs has also been investigated by the authors of the present review paper, as reported in a recent study, identifying a clear dependence with the in-plane compressive behaviour of the structures (Obadimu and Kourousis, 2022).…”

Section: Topology Featuressupporting

confidence: 66%

“…(2020), confirming again the correlation between geometrical features and resulting mechanical performance. An extension of the Gibson and Ashby (1997) plastic collapse stress equation has recently been proposed by the authors of the present review paper (Obadimu and Kourousis, 2022) by incorporating a viscoplastic dependence of the ME and laser PBF Steel 316L material response occurring from strain rates within a quasi-static loading conditions' range.…”

Section: Influence Of Honeycomb Geometrical Featuresmentioning

confidence: 98%

“…Chen et al (2018) similarly corroborated the findings of Hussein et al (2020), confirming again the correlation between geometrical features and resulting mechanical performance. An extension of the Gibson and Ashby (1997) plastic collapse stress equation has recently been proposed by the authors of the present review paper (Obadimu and Kourousis, 2022) by incorporating a viscoplastic dependence of the ME and laser PBF Steel 316L material response occurring from strain rates within a quasi-static loading conditions' range. Habib et al (2018) attempted to investigate, via a computational analysis, the relationship between cell topology vis-a-vis the compressive performance of ME Nylon-12 honeycombs.…”

Section: Topology Featuresmentioning

confidence: 99%

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In-plane compression performance of additively manufactured honeycomb structures: a review of influencing factors and optimisation techniques

Obadimu

Kourousis

2023

IJSI

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PurposeHoneycombs enjoy wide use in various engineering applications. The emergence of additive manufacturing (AM) as a method of customisable of parts has enabled the reinvention of the honeycomb structure. However, research on in-plane compressive performance of both classical and new types of honeycombs fabricated via AM is still ongoing. Several important findings have emerged over the past years, with significance for the AM community and a review is considered necessary and timely. This paper aims to review the in-plane compressive performance of AM honeycomb structures.Design/methodology/approachThis paper provides a state-of-the-art review focussing on the in-plane compressive performance of AM honeycomb structures, covering both polymers and metals. Recently published studies, over the past six years, have been reviewed under the specific theme of in-plane compression properties.FindingsThe key factors influencing the AM honeycombs' in-plane compressive performance are identified, namely the geometrical features, such as topology shape, cell wall thickness, cell size and manufacturing parameters. Moreover, the techniques and configurations commonly used for geometry optimisation toward improving mechanical performance are discussed in detail. Current AM limitations applicable to AM honeycomb structures are identified and potential future directions are also discussed in this paper.Originality/valueThis work evaluates critically the primary results and findings from the published research literature associated with the in-plane compressive mechanical performance of AM honeycombs.

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Section: Topology Featuressupporting

confidence: 66%

Section: Influence Of Honeycomb Geometrical Featuresmentioning

confidence: 98%

Section: Topology Featuresmentioning

confidence: 99%

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In-plane compression performance of additively manufactured honeycomb structures: a review of influencing factors and optimisation techniques

Obadimu

Kourousis

2023

IJSI

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“…The mechanical properties of materials with a honeycomb structure are influenced by their structural design rather than the volume fraction. Obadimu et al 29) also investigated that the structural effect is dominant on the compressive properties. Therefore, due to its higher degree of structural stability induced by design is essential to enhance the mechanical properties.…”

Section: Discussionmentioning

confidence: 99%

Deformation and Fracture Behaviors of Heterostructured STS316L/Inconel 718 by Laser Powder Bed Fusion

et al. 2023

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The current study utilized a two-step laser power bed fusion (LPBF) method to create a heterostructured material (HSM) composed of STS316L and Inconel 718. STS316L enhances ductility, while Inconel 718 improves strength. We examined the tensile deformation behavior of HSMs and found that stress is mainly localized in the cell or grain boundary area. The volumetric ratio of Inconel 718 to STS316L in the HSM affects the tensile properties, although the structural design is crucial for improving tensile strength. Fractographic analysis revealed that fracture occurred and propagated at the STS316L and Inconel 718 interface, with evident unmelted powders due to insufficient energy density. Achieving an optimized process parameter is necessary to ensure a reliable chemical joining which increases the mechanical properties of HSM.

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“…The influence of process parameters on structure precision, relative density, in-plane tensile deformability capacity and deformation response were analyzed systemically. The article [13] reports the inplane compression of Steel 316L honeycomb structures produced via material extrusion and laser powder bed fusion. The arc angle gradient honeycombs are treated in [14].…”

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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Load-rate effects on the in-plane compressive behaviour of additively manufactured steel 316L honeycomb structures

Cited by 15 publications

References 49 publications

In-plane compression performance of additively manufactured honeycomb structures: a review of influencing factors and optimisation techniques

In-plane compression performance of additively manufactured honeycomb structures: a review of influencing factors and optimisation techniques

Deformation and Fracture Behaviors of Heterostructured STS316L/Inconel 718 by Laser Powder Bed Fusion

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

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