Compressive Behaviour of Additively Manufactured Periodical Re-Entrant Tetrakaidecahedral Lattices at Low and High Strain-Rates

Neühauserová, Michaela; Fíla, Tomáš; Koudelka, Petr; Falta, Jan; Rada, Václav; Šleichrt, Jan; Zlámal, Petr; Jiroušek, Ondřej

doi:10.3390/met11081196

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…However, the thin-walled configuration within the plateau stage showed insignificant influence on the crushing stress. Neuhauserova et al [ 174 ] investigated the compressive properties of additively fabricated different re-entrant tetra-kai-decahedral structures, i.e., beam direct (BD), beam stem (BS), facet direct (FD), and facet stem (FS). It was noted that the BD structures exhibited the highest value of yield stress among all other tested samples.…”

Section: Testing and Performancementioning

confidence: 99%

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A Brief Review on Advanced Sandwich Structures with Customized Design Core and Composite Face Sheet

2022

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Sandwich structures are a class of multifunctional high-performance structural composites that have the advantages of being lightweight, of a high strength-to-weight ratio, and of high specific energy absorption capabilities. The creative design of the core along with the apposite material selection for the fabrication of the face sheet and core are the two prerequisites with encouraging areas for further expedition towards the fabrication of advanced composite sandwich structures. The current review work focused on different types of core designs, such as truss, foam, corrugated, honeycomb, derivative, hybrid, hollow, hierarchical, gradient, folded, and smart core along with different composite materials accessible for face sheet fabrication, including fiber-reinforced composite, metal matrix composite, and polymer matrix composite are considered. The joining method plays a major role for the performance evolution of sandwich structures, which were also investigated. Further discussions are aligned to address major challenges in the fabrication of sandwich structures and further enlighten the future direction of the advanced composite sandwich structure. Finally, the work is summarized with a brief conclusion. This review article provides wider guidelines for researchers in designing and manufacturing next-generation lightweight multilayer core sandwich structures.

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Section: Testing and Performancementioning

confidence: 99%

“… Deformation modes of ( a ) BD, ( b ) BS, ( c ) FD, ( d ) FS re-entrant tetra-kai-decahedral structure [ 174 ]. …”

Section: Figurementioning

confidence: 99%

A Brief Review on Advanced Sandwich Structures with Customized Design Core and Composite Face Sheet

2022

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“…In this field, the strain rate-dependency of such porous solids is given by the architecture of the lattice and the base material used for its production. Here, we have already shown that a split Hopkinson pressure bar (SHPB) instrumented with a high-speed camera can be used to assess the dynamic compressive response of various auxetic lattices manufactured by LPBF from 316L powdered austenitic steel [ 15 , 16 , 17 ]. The SHPB apparatus has also been used to evaluate the influence of elevated and reduced temperatures on the deformation response of steel auxetic lattices [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Strain Rate-Dependent Compressive Properties of Bulk Cylindrical 3D-Printed Samples from 316L Stainless Steel

et al. 2022

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The main aim of the study was to analyse the strain rate sensitivity of the compressive deformation response in bulk 3D-printed samples from 316L stainless steel according to the printing orientation. The laser powder bed fusion (LPBF) method of metal additive manufacturing was utilised for the production of the samples with three different printing orientations: 0∘, 45∘, and 90∘. The specimens were experimentally investigated during uni-axial quasi-static and dynamic loading. A split Hopkinson pressure bar (SHPB) apparatus was used for the dynamic experiments. The experiments were observed using a high-resolution (quasi-static loading) or a high-speed visible-light camera and a high-speed thermographic camera (dynamic loading) to allow for the quantitative and qualitative analysis of the deformation processes. Digital image correlation (DIC) software was used for the evaluation of displacement fields. To assess the deformation behaviour of the 3D-printed bulk samples and strain rate related properties, an analysis of the true stress–true strain diagrams from quasi-static and dynamic experiments as well as the thermograms captured during the dynamic loading was performed. The results revealed a strong strain rate effect on the mechanical response of the investigated material. Furthermore, a dependency of the strain-rate sensitivity on the printing orientation was identified.

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The Auxetic Friction Cell: Towards programming strain rate dependency and energy dissipation into mechanical metamaterials

Patil¹,

Ganzenmüller²,

Gutmann³

et al. 2023

Materials Today Communications

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Compressive Behaviour of Additively Manufactured Periodical Re-Entrant Tetrakaidecahedral Lattices at Low and High Strain-Rates

Cited by 5 publications

References 32 publications

A Brief Review on Advanced Sandwich Structures with Customized Design Core and Composite Face Sheet

A Brief Review on Advanced Sandwich Structures with Customized Design Core and Composite Face Sheet

Strain Rate-Dependent Compressive Properties of Bulk Cylindrical 3D-Printed Samples from 316L Stainless Steel

The Auxetic Friction Cell: Towards programming strain rate dependency and energy dissipation into mechanical metamaterials

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