Dynamic characterisation of novel three-dimensional axisymmetric chiral auxetic structure

Mauko, Anja; Emre Yilmaz, Yunus; Novak, Nejc; Doktor, Tomáš; Vesenjak, Matej; Ren, Zoran

doi:10.1016/j.compstruct.2024.117949

Composite Structures

2024

DOI: 10.1016/j.compstruct.2024.117949

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Dynamic characterisation of novel three-dimensional axisymmetric chiral auxetic structure

Anja Mauko,

Yunus Emre Yilmaz,

Nejc Novak

et al.

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Cited by 4 publications

References 48 publications

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Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling

Koudelka,

Zlámal,

Fíla

et al. 2024

emergent mater.

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We studied compression of tetrachiral auxetic lattice manufactured using laser powder bed fusion from an aluminum alloy. Using an in-house loading device integrated with an X-ray CT scanner, experiments, including in-situ loading with time-lapse XCT imaging, were performed to obtain 3D images of the lattice to study its geometry, internal structure, and deformation through an in-house digital volume correlation. Numerical analyses based on the voxel model from XCT imaging and the tetrahedral model based on the design geometry were performed. The correlation between the experiment and the simulations was sought by comparing force-displacement diagrams and Poisson’s ratio. Results show that 3D printing of the lattice may lead to significantly different mechanical characteristics. An analysis of the difference between the design geometry and the manufactured lattice, coupled with porosity assessment, was performed to discuss the reasons for the discrepancies between the anticipated deformation response of the lattice and its real behavior.

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Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling

Koudelka,

Zlámal,

Fíla

et al. 2024

emergent mater.

View full text Add to dashboard Cite

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Tunable mechanical properties of the 3D anticircular-curve transversal-isotropic auxetic structure

Li,

Liu

2025

Composite Structures

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A rotating triangular auxetic perforated plate: Structural design and characteristic analysis

Xue,

Jiang,

Zhang

et al. 2025

Composite Structures

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Dynamic characterisation of novel three-dimensional axisymmetric chiral auxetic structure

Cited by 4 publications

References 48 publications

Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling

Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling

Tunable mechanical properties of the 3D anticircular-curve transversal-isotropic auxetic structure

A rotating triangular auxetic perforated plate: Structural design and characteristic analysis

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