Aluminium foams structural modelling

Giorgi, M. De; Carofalo, A.; Dattoma, V.; Nobile, R.; Palano, F.

doi:10.1016/j.compstruc.2009.06.005

Cited by 79 publications

(41 citation statements)

References 14 publications

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“…7. Stresses due to the elapsed times at all cases of [1][2][3][4][5][6] As analysis result, Fig. 8 shows the graph of minimum internal energies due to the elapsed times at all cases of 1-6.…”

Section: Study Model and Methodsmentioning

confidence: 99%

“…Particularly, the fuel efficiency can be improved through weight reduction of the car body, for which new materials such as CFRP, aluminum alloys and magnesium alloys are frequently applied [1][2][3][4][5]. Since such a weight reduction of the car body should be realized with the stability being secured against collision, the car body design should be realized by investigating impact characteristics due to the impact of car body occurring at collision [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Impact Characteristic According to the Structure of Crash Box at the Vehicle

Min

Cho

2017

Archives of Metallurgy and Materials

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The crash box between a bumper and a car body in automobiles can reduce impacts for car bodies with a bumper at a low-speed collision by preventing the shocks. Also, this crash box is the part playing a very important role for the safety of vehicle and the reduction of repair cost, and many studies have been investigated for the performance. In this study, aluminum foam was inserted in an aluminum crash box to analyze the relationships of deformation, stress and internal energy. The compression characteristics are compared with six cases. In addition, the load due to displacement at experiment for a case is verified by modeling with finite elements and performing the structural analysis. As these study results for investigating characteristics of the crash box, it is thought that the effective designs of crash box to enhance the durability for collision are made possible.

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Section: Study Model and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact Characteristic According to the Structure of Crash Box at the Vehicle

Min

Cho

2017

Archives of Metallurgy and Materials

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“…On the contrary, the Kelvin's cell has attracted the attention of many researchers and they have developed models to simulate the mechanical properties of many types of foam materials based on the Kelvin unit cell. [5][6][7][8][9][10] Modeling the foam microstructure based on the idealized Kelvin cell ranged from considering that the foam consists of regularly arranged Kelvin cells with a constant wall thickness 5,6 to a more complicated idealization taking into consideration the irregularity and imperfection in the real foam internal structure. These irregularities include the solid distribution between foam cells and walls 7,8,10 and the foam cell curvature.…”

Section: Literature Reviewmentioning

confidence: 99%

“…[5][6][7][8][9][10] Modeling the foam microstructure based on the idealized Kelvin cell ranged from considering that the foam consists of regularly arranged Kelvin cells with a constant wall thickness 5,6 to a more complicated idealization taking into consideration the irregularity and imperfection in the real foam internal structure. These irregularities include the solid distribution between foam cells and walls 7,8,10 and the foam cell curvature. 9,10 In addition to the solid distribution and the cell face curvature, the disorders in the cell shape include sometimes cell anisotropy or unequal cell dimensions in different directions.…”

Section: Literature Reviewmentioning

confidence: 99%

Finite element modeling of compression behavior of extruded polystyrene foam using X-ray tomography

Sadek

Fouad

2013

Journal of Cellular Plastics

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Extruded polystyrene rigid foams have attracted a great attention as a superior loadbearing thermal insulation material since their implementation in building construction. One of the most common application areas of this type of thermal insulation material is under raft foundations, where the foam normally undergoes high levels of compression loads. The purpose of this research is to determine how to simulate and optimize the structural response of extruded polystyrene under compression stresses. The optimization has been achieved through investigating the relation between the foam microstructure and the global mechanical properties. The foam was first examined using X-ray tomography imaging technique to acquire some morphological information about the microstructure. The obtained morphological data of extruded polystyrene boards were then utilized to develop microstructure-based finite element models based on the socalled idealized realistic Kelvin cell. The finite element simulation was accomplished with the help of the nanoindentation technology to explore the mechanical properties of the cell wall material. The finite element models were validated by comparisons between the simulated and the experimental results. It has been found that the mechanical properties of the foam in different loading directions can be adequately simulated using the approach of the idealized realistic Kelvin cell. With the help of these models, a parameter study was carried out. This study included the effect of cell size and cell anisotropy on the mechanical response of extruded polystyrene boards under compression stresses. Charts relating between the foam microstructure characteristics and the compression behavior were generated based on the parametric study.

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“…Various production techniques with different chemical compositions greatly affect the microstructural and mechanical properties of foams. A great number of studies [3][4][5][6][7][8][9][10] are available in the literature which contains conventional tests applied to the Al foams to reveal their mechanical performances under different loading conditions. Particularly, the quasistatic compressive responses of Al foams were investigated by a number of researchers and it was found that the stress-strain graphs of foams show a significant characteristic with three distinct regions.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and energy absorption behaviors of metal/polymer layered sandwich structures

Baştürk

Tanoğlu

2011

Journal of Reinforced Plastics and Composites

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This article considers the sandwich structures with aluminium (Al) foams of various thicknesses in conjunction with skins composed of fibre-metal laminates (FML). The FMLs with Al sheet and glass fiber reinforced polypropylene (GFPP) composites were integrated with Al foam for composing the sandwich panels. The FML-foam sandwich systems were manufactured by hot pressing in a mold at 200 C under 1.5 MPa pressure. The bonding between the components of the sandwich was achieved by various surface modification techniques, i.e., silane surface treatment, PP adhesive film additition, and their combination. The Al sheet/Al foam sandwiches were also prepared by bonding the components with an epoxy adhesive for comparing the effect of GFPP on the mechanical performance of the sandwich structures. The energy absorption capacities together with compressive mechanical behavior of both Al foams and FML-foam sandwich systems were evaluated by flatwise compression tests. Experiments were performed on samples of varying foam thicknesses.

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Aluminium foams structural modelling

Cited by 79 publications

References 14 publications

Impact Characteristic According to the Structure of Crash Box at the Vehicle

Impact Characteristic According to the Structure of Crash Box at the Vehicle

Finite element modeling of compression behavior of extruded polystyrene foam using X-ray tomography

Mechanical and energy absorption behaviors of metal/polymer layered sandwich structures

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