Modelling of the material destruction of vertically arranged honeycomb cellular structure

Piekło, J.; Małysza, M.; Dańko, R.

doi:10.1016/j.acme.2018.03.007

Cited by 12 publications

(6 citation statements)

References 10 publications

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“…The honeycomb structures manufactured by additive technologies have been highly researched regarding their compression strength [ 6 ], their energy absorption [ 7 ] and the shape recovery effect of a 3D-printed structure [ 8 ]. Recent studies have highlighted the diversity of the numerical analyses [ 9 ] and the analysis of the failures, under compression tests [ 10 ] of the honeycomb structures manufactured by FFF technology. In addition, FFF technology has been used to create different cellular topologies, such as Gyroid and Schwarz P [ 11 ] or a 3D-printed hierarchical gyroid structure with embedded TiO 2 nanoparticles [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performances of Lightweight Sandwich Structures Produced by Material Extrusion-Based Additive Manufacturing

2020

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Material Extrusion-Based Additive Manufacturing Process (ME-AMP) via Fused Filament Fabrication (FFF) offers a higher geometric flexibility than conventional technologies to fabricate thermoplastic lightweight sandwich structures. This study used polylactic acid/polyhydroxyalkanoate (PLA/PHA) biodegradable material and a 3D printer to manufacture lightweight sandwich structures with honeycomb, diamond-celled and corrugated core shapes as a single part. In this paper, compression, three-point bending and tensile tests were performed to evaluate the performance of lightweight sandwich structures with different core topologies. In addition, the main failure modes of the sandwich structures subjected to mechanical tests were evaluated. The main failure modes that were observed from mechanical tests of the sandwich structure were the following: face yielding, face wrinkling, core/skin debonding. Elasto-plastic finite element analysis allowed predicting the global behavior of the structure and stressing distribution in the elements of lightweight sandwich structures. The comparison between the results of bending experiments and finite element analyses indicated acceptable similarity in terms of failure behavior and force reactions. Finally, the three honeycomb, diamond-celled and corrugated core typologies were used in the leading edge of the wing and were impact tested and the results created favorable premises for using such structures on aircraft models and helicopter blade structures.

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Section: Introductionmentioning

confidence: 99%

Mechanical Performances of Lightweight Sandwich Structures Produced by Material Extrusion-Based Additive Manufacturing

2020

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“…Such regular cellular structures are generally investigated by acting static or dynamic compressive forces, which can be applied horizontally or vertically. Piekło et al presented the study on perpendicular loading of the cells of honeycomb samples manufactured by investment casting with 4xxx.0 alloy [4]. The FEM numerical simulation was also performed, supporting the experimental trial.…”

Section: Introductionmentioning

confidence: 70%

Archives of Foundry Engineering

Naplocha,

Dmitruk,

Mayer

et al. 2019

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Investment casting combined with the additive manufacturing technology enables production of the thin-walled elements, that are geometrically complex, precise and can be easy commercialized. This paper presents design of aluminium alloy honeycombs, which are characterized with light structure, internal parallel oriented channels and suitable stiffness. Based on 3D printed pattern the mould was prepared from standard ceramic material subjected subsequently to appropriate heat treatment. Into created mould cavity with intricate and susceptible structure molten AC 44200 aluminium alloy was poured under low pressure. Properly designed gating system and selected process parameters enabled to limit the shrinkage voids, porosities and misruns. Compression examination performed in two directions showed different mechanisms of cell deformation. Characteristic plateau region of stress-strain curves allowed to determine absorbed energy per unit volume, which was 485 or 402 J/mm 3 depending on load direction. Elaborated technology will be applied for the production of honeycomb based elements designated for energy absorption capability.

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“…Based on Hook's law, the effect of damage on the flow stress is considered [32], and the stress is characterized as follows:…”

Section: Modeling Of Damage Evolutionmentioning

confidence: 99%

A constitutive model based on internal variable method for the microstructure simulation of four-layer structure formed by the superplastic forming/diffusion bonding process

Wu¹,

Fan³

et al. 2023

Preprint

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This study set out to realize the prediction of microstructure evolution and mechanical properties of the titanium alloy four-layer structure formed by the superplastic forming/diffusion bonding (SPF/DB) process. The flow behavior and the microstructure evolution of TC31 alloy were studied by the high-temperature experiments. A physically-based constitutive model was established and applied in the superplastic forming process of the four-layer structure. The TC31 titanium alloy four-layer structure was fabricated to verify the accuracy of the constitutive model. The results showed that the main reason for the increase in material stress and the decrease in elongation was the growth of grains. The TC31 four-layer structure was soundly fabricated by SPF/DB process, and the maximum damage value of the structure was located at the sidewall area with a value of 0.16. The compression strength of the structure was 19.0MPa, and the compression failure mode of the four-layer structure was the cracking of the bonding area. The experimental results were similar to the simulation results, which demonstrated that the finite element simulation with the internal variable model could accurately predict the shape, the thickness distribution and the damage distribution of the four-layer structure during the SPF process.

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Modelling of the material destruction of vertically arranged honeycomb cellular structure

Cited by 12 publications

References 10 publications

Mechanical Performances of Lightweight Sandwich Structures Produced by Material Extrusion-Based Additive Manufacturing

Mechanical Performances of Lightweight Sandwich Structures Produced by Material Extrusion-Based Additive Manufacturing

Archives of Foundry Engineering

A constitutive model based on internal variable method for the microstructure simulation of four-layer structure formed by the superplastic forming/diffusion bonding process

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