Dynamic mechanical properties of closed-cell aluminum foams with uniform and graded densities

Ying, Zhao; Ma, Chenyang; Xin, Dabo; Sun, Ming

doi:10.1557/jmr.2020.157

Cited by 10 publications

(6 citation statements)

References 27 publications

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“…The present work, based on experimental results and a model by the author and other co-authors, proposes a simplified method to build these selection diagrams based on a serendipitous observation of the experimental results of many materials with different natures. Since it appears that the maximum efficiency occurs at an almost fixed value of strain (a result apparently found in other cases with different materials [36][37][38]), the selection curves can be drawn quickly with simplified mathematical expressions. This can shorten and simplify the selection process.…”

Section: Discussionmentioning

confidence: 97%

“…[36] for EPS, an refs. [37,38] for aluminum foams. Of course, the precise value is never exactly one but assuming this value in the described equations makes it possible to greatly simplify their expression and even to quickly obtain the selection diagrams.…”

Section: Simplified Selection Charts With the Foam Modelmentioning

confidence: 99%

“…[36] for EPS, an refs. [37,38] for aluminum foams. Of course, the precise value is never exactly By substituting the unit value of the true compression strain, the following expressions for compression stress and absorbed energy are then obtained:…”

Section: Simplified Selection Charts With the Foam Modelmentioning

confidence: 99%

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A Generic Model to Assess the Efficiency Analysis of Cellular Foams

Avalle

2024

Materials

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One of the main types of uses of cellular materials is for energy absorption and dissipation in applications, such as safety and packaging, to protect people and goods during impact situations. In such cases, the use of cellular materials is justified by their capacity to largely deform under limited loads. This is often achieved, alone or within energy absorbing structures, with the additional advantage of cheap components that are relatively simple to manufacture and assemble. As in most engineering applications, weight reduction is sought after and, as in the case of other materials, this objective can be attained by optimizing the use of the material. Optimization of a cellular material for energy absorption means obtaining an optimal mechanical characteristic that can be obtained by properly designing it in terms of the type of base material and cell properties. Cell properties are mainly related to density and their optimal selection can be made by means of energy criteria. The aim of the present paper is to discuss such optimality criteria based on what are termed efficiency diagrams to produce an effective design tool. Additionally, based on empiric observations on the behavior of several classes of polymeric foams, a simplified selection method is proposed to hasten the selection criteria.

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Section: Discussionmentioning

confidence: 97%

Section: Simplified Selection Charts With the Foam Modelmentioning

confidence: 99%

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A Generic Model to Assess the Efficiency Analysis of Cellular Foams

Avalle

2024

Materials

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“…Using this method, Campana et al [148] was able to connect two previously foamed sections by foaming a precursor between them using localized laser heating. Interestingly, the laser-assisted heating process enables foams that are produced separately to be seamlessly integrated as a continuous foam, without heating large sections, using adhesives [149], or a confluence of alloys [150]. This may be particularly interesting in large assemblies or repairs where individual foam components need to be added or replaced.…”

Section: Alternative Approachesmentioning

confidence: 99%

Review: Closed-Cell Metallic Foams Produced via Powder Metallurgy

Behymer,

Morsi

2023

Metals

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The production of closed-cell metallic foams has been of interest to the scientific community and industry for decades, owing to their unique properties, which include high specific strength and stiffness, buoyancy, shock absorption, and crash worthiness. One of the approaches for their fabrication relies solely on the use of powders and is manifested in what has been referred to as the powder metallurgy (PM) route. This review discusses the underlying fundamentals of the process, and recent developments together with our current understanding. The effect of process parameters on the developed foam structure is reviewed for a range of metals, alloys, and metal matrix composites. Fundamental foaming mechanisms and characteristics are discussed.

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“…To best explore the obtained results, the compressive mechanical properties are extracted from the obtained stressstrain curves. The energy absorption efficiency was used to calculate the densification strain and plateau stress [28] of the tested models as follows:…”

Section: Determination Of Compressive Propertiesmentioning

confidence: 99%

Analysis for Enhancing the Performance Characteristics of Honeycomb-Filled Tubes at Constant Mass

Benhizia,

Khennab,

Bensalem

2023

RCMA

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In this paper, assuming the lightweight design is the main requirement, an efficient design of honeycomb sandwich tubes and its quasi-static compressive properties improvement were presented. The structures are designed in SolidWorks software, consisting of two face sheets and a honeycomb core implemented in its in-plane position. The axial compression tests are performed using Abaqus software. Detailed deformation features and energy absorption characteristics during the crushing process were presented. The compressive properties of the improved structures were determined from the energy absorption efficiency curves. Additionally, mathematical formulas for predicting the quasi-static compressive properties are presented. Theoretical predictions and FEA findings were in good agreement. In comparison to the standard structure, the suggested method greatly increased the structure's strength without adding mass to the design.

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Dynamic mechanical properties of closed-cell aluminum foams with uniform and graded densities

Abstract: Abstract

Cited by 10 publications

References 27 publications

A Generic Model to Assess the Efficiency Analysis of Cellular Foams

A Generic Model to Assess the Efficiency Analysis of Cellular Foams

Review: Closed-Cell Metallic Foams Produced via Powder Metallurgy

Analysis for Enhancing the Performance Characteristics of Honeycomb-Filled Tubes at Constant Mass

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