Thermal conductivities of iso-volume centre-symmetric honeycombs

Boldrin, Luca; Scarpa, Fabrizio; Rajasekaran, R.

doi:10.1016/j.compstruct.2014.03.013

Cited by 14 publications

(14 citation statements)

References 25 publications

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“…Using 6061-T4 aluminum alloy as the bulk constituent material, eleven honeycomb samples with a controlled dimensional error 0.03 mm in thickness, were fabricated by Nanjing Siyou Photoelectric Technology Limited, Nanjing, China. In the design of the samples, the samples had theoretically identical relative density ρ * /ρ c =0.1 in which ρ * =0.27 g/cm 3 and ρ c =2.7 g/cm 3 are the densities of the honeycomb and the bulk aluminum alloy, respectively. The sizes in z direction were 20 mm and 30 mm for the in-plane and out-of-plane samples, respectively, and the distance l between centres of two adjacent cylindrical shells was fixed to be 20 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The sizes in z direction were 20 mm and 30 mm for the in-plane and out-of-plane samples, respectively, and the distance l between centres of two adjacent cylindrical shells was fixed to be 20 mm. The radius r of the cylindrical shell was first selected, and the wall thickness t was determined by the following equation ρ * /ρ c =-1.155⋅(t/l) 2 +[2.528⋅(r/l)+1.155]⋅(t/l) [19], and the masses of the models were calculated by multiplying the volumes of the samples to their density ρ * =0.27 g/cm 3 , see Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…Honeycomb and foamy structures widely exist in natural materials (e.g., Luffa sponge [1]), which are shaped by their surrounding environment. In view of optimization in the process of natural evolution, it facilitates the study of the natural or man-made foamy materials with multiple functions, such as energy-absorption [2], heat-transfer [3,4] and electromagnetic absorption [5]. To date, varieties of honeycomb structures are presented.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Plastic collapse of cylindrical shell-plate periodic honeycombs under uniaxial compression: experimental and numerical analyses

Chen

Shi

Signetti

et al. 2016

International Journal of Mechanical Sciences

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This paper studies the plastic collapse mechanisms of uniaxially-loaded cylindrical shell-plate periodic honeycombs with identical mass (or relative density) but varying geometric parameters, by series of in-plane and out-of-plane experiments and finite element numerical simulations. The coupled experimental-numerical results show that mechanical properties of the honeycomb can be optimized in all three loading cases, thanks to the complementary changes of the mechanical properties of cylindrical shell and plate as the geometric parameters vary. The work presents a concept to optimize lattice structures by combining different substructures, and can be used in designing new low-density honeycomb structures with desired mechanical requirements but less base materials and weight.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plastic collapse of cylindrical shell-plate periodic honeycombs under uniaxial compression: experimental and numerical analyses

Chen

Shi

Signetti

et al. 2016

International Journal of Mechanical Sciences

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“…radiation and convection, is assumed to be small and consequently disregarded. For a cellular material made by a highly conductive matrix and an empty void or a gaseous inclusion, this assumption is valid for small pore sizes working at temperature ranges close to the ambient [34][35][36][37].…”

Section: B 3d Shellular Rvesmentioning

confidence: 99%

Thermal Conductivity Of Advanced Architected Cellular Materials

Mirabolghasemi¹,

Akbarzadeh²,

Rodrigue³

et al. 2018

Progress in Canadian Mechanical Engineering

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Architected cellular materials, as a novel class of low density materials, gain their unprecedented multifunctional performance mainly from their underlying architecture. In this paper, we focus on thermal conductivity of cellular materials. Standard mechanics homogenization with periodic boundary conditions is used to determine the thermal conductivity of cells with supershape pores. The computational results confirm that a wide range of possible anisotropic behaviour for thermal conductivity is achievable for cellular materials. Effective thermal conductivity of shellular materials based on three triply periodic minimal surfaces are also compared with those of cells with supershape pores. It is found that unlike the shellular materials, which only cover a narrow portion of thermal conductivity vs. relative density chart, cellular materials with anisotropic effective thermal conductivity could be engineered by employing supershape pores in cells.

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“…Negative thermal expansion has been investigated by Grima et al and Hua et al . Thermal conductivity in honeycomb structures has been studied by Boldrin et al and Bezazi et al .…”

Section: Introductionmentioning

confidence: 99%

Thermal and structural dependence of auxetic properties of composite materials

Jopek

Stręk

2015

Physica Status Solidi (b)

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Negative Poisson's ratio has already been discovered for many geometrical structures. In most cases, however, the metamaterials built upon such geometries are foams or cellular solids. In this paper, a unidirectional fibrous composite built of two constituent materials of different thermomechanical properties has been studied. The resultant composite is a solid material in its volume. In order to obtain a material of the required properties, both the geometry of fibers and the influence of temperature on both materials have been investigated.

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Thermal conductivities of iso-volume centre-symmetric honeycombs

Cited by 14 publications

References 25 publications

Plastic collapse of cylindrical shell-plate periodic honeycombs under uniaxial compression: experimental and numerical analyses

Plastic collapse of cylindrical shell-plate periodic honeycombs under uniaxial compression: experimental and numerical analyses

Thermal Conductivity Of Advanced Architected Cellular Materials

Thermal and structural dependence of auxetic properties of composite materials

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