Numerical modelling of open-cell metal foam with Kelvin cell

Kaoua, Sid Ali; Boutaleb, Salah; Dahmoun, Djaffar; Azzaz, M.

doi:10.1007/s40314-015-0217-4

Cited by 7 publications

(7 citation statements)

References 13 publications

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“…Previous research work used finite-element structure mechanics simulations to investigate the mechanical properties of specific foam structures. [7,23,24] Since we aim at considering 3D simulations on a variety of different geometries, we used a phase-field method for geometry parameterization of the foam structures. Due to the diffuse interface modeling, the approach enables a numerical treatment on arbitrary grids.…”

Section: Doi: 101002/adem202300340mentioning

confidence: 99%

“…In contrast to simple homogenization, that only considers the main loading direction as in ref. [7], the quality of the least squares fit yields an indicator in order to judge the isotropy assumption and the representativeness of the considered domain. Additionally, this approach still avoids simulations of different loading scenarios for each particular structure, as it would be required in the general case cf., for example.…”

Section: Introductionmentioning

confidence: 99%

“…Previous research work used finite‐element structure mechanics simulations to investigate the mechanical properties of specific foam structures. [ 7,23,24 ]…”

Section: Introductionmentioning

confidence: 99%

“…[6] Thereby, not only the volume fraction of the metal plays a role, but the mechanical properties also strongly depend on the foam topology. [7][8][9] The class of foams contains a large variety of complex structures with a wide range of geometrical parameters, that can vary, such as the ligament cross-section geometry, the ligament alignment, as well as the distributions of ligament thickness and pore size. [9] This spans a large parameter room, which can be subjected to an optimization in order to have a favorable combination of mechanical properties and low mass density.…”

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confidence: 99%

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Simulative Determination of Effective Mechanical Properties for Digitally Generated Foam Geometries

Reder,

Holland-Cunz,

Lorson

et al. 2023

Adv Eng Mater

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Metal foams constitute a promising and emerging material class in the context of lightweight construction. There exists a variety of different foam topologies, on which resulting mechanical properties depend. To maximize the potential of foams in material use under mechanical load, the present work addresses the question how different geometrical parameters influence the material behaviour. Therefore, an algorithm for digital generation and design of open pore foam structures is presented, that allows to regulate the geometry precisely. A method for retrieving effective mechanical properties from numerical simulations of compression tests in the elastic regime is introduced. Additionally, the representativeness of foam volumes considered for simulations is investigated. This yields a fully digital workflow, which enables the investigation of geometry influence on mechanical properties. This approach is used to conduct simulation studies on generated foam structures with a systematic variation of geometrical parameters. Herein, a range of effective Young's moduli varying by up to a factor of 1.3 for different foam structures at the same porosity is found. This shows a significant impact of the foam geometry on the elastic properties of metal foams. The presented methodology yields insights, which can guide design and optimization of materials for specific applications.

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Section: Doi: 101002/adem202300340mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Previous research work used finite‐element structure mechanics simulations to investigate the mechanical properties of specific foam structures. [ 7,23,24 ]…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Simulative Determination of Effective Mechanical Properties for Digitally Generated Foam Geometries

Reder,

Holland-Cunz,

Lorson

et al. 2023

Adv Eng Mater

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“…The numerical simulations are performed in the linear elastic regime, which is a common approach in the field of open cell foams. Kaoua et al [ 18 ] use finite element (FE) simulations on Kelvin unit cells to investigate different ligament cross section geometries. In the work by Gan et al [ 19 ] and Zhu et al [ 17 ], elastic FE simulations are also applied to Voronoi-based foams, whereby in the latter work, the influence of geometry irregularities is investigated.…”

Section: Introductionmentioning

confidence: 99%

Computational Design and Characterisation of Gyroid Structures with Different Gradient Functions for Porosity Adjustment

et al. 2022

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Triply periodic minimal surface (TPMS) structures have a very good lightweight potential, due to their surface-to-volume ratio, and thus are contents of various applications and research areas, such as tissue engineering, crash structures, or heat exchangers. While TPMS structures with a uniform porosity or a linear gradient have been considered in the literature, this paper focuses on the investigation of the mechanical properties of gyroid structures with non-linear porosity gradients. For the realisation of the different porosity gradients, an algorithm is introduced that allows the porosity to be adjusted by definable functions. A parametric study is performed on the resulting gyroid structures by performing mechanical simulations in the linear deformation regime. The transformation into dimensionless parameters enables material-independent statements, which is possible due to linearity. Thus, the effective elastic behaviour depends only on the structure geometry. As a result, by introducing non-linear gradient functions and varying the density of the structure over the entire volume, specific strengths can be generated in certain areas of interest. A computational design of porosity enables an accelerated application-specific structure development in the field of engineering.

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Post-corrosion mechanical properties of absorbable open cell iron foams with hollow struts

Alavi

Akbarzadeh

Hermawan

2021

Journal of the Mechanical Behavior of Biomedical Materials

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Numerical modelling of open-cell metal foam with Kelvin cell

Cited by 7 publications

References 13 publications

Simulative Determination of Effective Mechanical Properties for Digitally Generated Foam Geometries

Simulative Determination of Effective Mechanical Properties for Digitally Generated Foam Geometries

Computational Design and Characterisation of Gyroid Structures with Different Gradient Functions for Porosity Adjustment

Post-corrosion mechanical properties of absorbable open cell iron foams with hollow struts

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