Structural analysis and its statistical evaluation of a closed-cell metal foam

Mankovits, Tamás; Budai, István; Balogh, Gábor; Gábora, András; Kozma, István; Varga, Tamás; Manó, Sándor; Kocsis, Imre

doi:10.1556/irase.5.2014.2.5

Cited by 17 publications

(16 citation statements)

References 11 publications

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“…The size of the specimens was determined according to the ISO 13314 standard on the basis of a statistical analysis of the pore sizes. Similar investigations were published in [51] by the authors. The size of the specimens was 14.5 mm × 14.5 mm × 14.5 mm (see Fig.…”

Section: Materials and Experimental Methodssupporting

confidence: 87%

“…Considering the finite element investigations, the relevant physical and mechanical properties of the solid phase were measured [51]. The chemical composition was also evaluated with EDX analysis and compared with the data available in the literature.…”

Section: Materials and Experimental Methodsmentioning

confidence: 99%

“…The rigid top plate had a prescribed displacement, and the bottom plate was fixed and used to measure the reaction force. The aluminium foam specimens were meshed with tetrahedron elements, and material properties were determined using experiments by the authors [51]. The properties of the finite element models are listed in Table 5.…”

Section: Finite Element Calculationsmentioning

confidence: 99%

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Compressive Response Determination of Closed-Cell Aluminium Foam and Linear-Elastic Finite Element Simulation of μCT-Based Directly Reconstructed Geometrical Models

2018

SV-JME

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Metal foams have a lightweight cellular structure with excellent mechanical and physical properties. It is well known that metal foams have high compression strength combined with good energy absorption characteristics [1]. Therefore, the interest in these materials is widespread not only as a vibration damper or sound absorber but also as a load-bearing structural element. Numerous applications rely on the compressive property of metal foams, which directly depend on its structure. As a load-bearing structural element (e.g. vehicle part, biomedical implant) metal foam is expected to behave elastically under working circumstances, so the material response must be predicted precisely in the elastic region. Numerical determination of compressive properties of foam structure remains a demanding engineering task, and it is indispensable for design purposes.A number of studies have reported on measuring the material response of different types of metal foams in destructive ways. Geometrical modelling is an essential part of the procedure aiming the investigation of metal foam structures in a numerical way. Numerous approaches can be found in the literature for the proper description of foam structures, one of which is the usage of uniform cell models which results in simplified geometry compared with the actual structure. A combination of spherical and cruciform-shaped cells was used to model closed-cell aluminium foam and to simulate its material response in [11], while different uniform cell structures were applied to the model and simulate open cell metal foams in [12] to [14]. Diamond and cubic cell foam structure were also used to simulate the effect of cell shape on the mechanical behaviour of open cell metal foams in [15].Since the inner structure of different types of metal foams is quite complicated, a surface analysis can result in imperfect or false data. Recent studies proved X-ray computed tomography to be an efficient and powerful tool for mapping the complete structure • Calculations based on geometrical model precisely described the compressive response in the elastic region. Compressive Response Determination of Closed-Cell Aluminium Foam and Linear-Elastic Finite Element Simulation of µCT-Based Directly Reconstructed Geometrical Models

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Section: Materials and Experimental Methodssupporting

confidence: 87%

Section: Materials and Experimental Methodsmentioning

confidence: 99%

Section: Finite Element Calculationsmentioning

confidence: 99%

See 1 more Smart Citation

Compressive Response Determination of Closed-Cell Aluminium Foam and Linear-Elastic Finite Element Simulation of μCT-Based Directly Reconstructed Geometrical Models

2018

SV-JME

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“…Ezt a tényt ellenőrzésként felhasználtuk a másik két vizsgálati módszer mellett. A vizsgálati módszerek által meghatározott értékeket a 4.ábra tartalmazza [4][5].…”

Section: Vizsgálati Módszerek öSszehasonlításaunclassified

Fémhabok struktúrájának elemzése és modellezése

Varga¹,

Mankovits²,

Kocsis³

et al. 2015

MTK

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The development of an efficient procedure for 3D modelling and finite element simulation of metal foams is one of the greatest challenges to engineer researchers nowadays. Creating 3D CAD model is alone a demanding engineering task due to its extremely complex geometry, and the proper finite element analysis process is still in the center of the research. Quantitative image analysis has also been done which gives detailed information about the structure of the metal foam. The volume ratios were derived by area fraction and line analysis as well. The two applied methods were compared. The main goal of this part of the project is to obtain structural information and to determine the homogeneity or the in-homogeneity property of the metal foam specimens taken from different locations.

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“…The most common filler materials are the ceramic [10][11][12][13][14][15] or metallic [10] hollow spheres but in order to reduce the costs of the MMSFs perlite [16][17][18] or pumice [19] are used as well. Mankovits et al [20][21][22][23][24] and Kozma et al [25,26] dealt with the computer tomography and structural reconstruction of MMSFs in order to perform complex finite element analyses with the ultimate goal of mechanical properties prediction. Szalóki et al has investigated the cutting processes of similar material as described in [27].…”

Section: Introductionmentioning

confidence: 99%