Stress-strain states and energy absorption in open-cell aluminium foams under hypervelocity impact

Zhao, Shengpu; Zhang, Xiaotian; Wang, Ruiqing; Li, Ruizhi

doi:10.1016/j.compstruct.2023.116885

Cited by 12 publications

(4 citation statements)

References 56 publications

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“…[19,22] Electroforming of these materials is a common way to produce a new generation of open-cell metal foams usually manufactured with a single layer of metallic shells including nickel, [23] copper, [24] iron, [25] magnesium, [26] etc. Moreover, different kinds of experimental and computational methods used to investigate the micromechanical, [27][28][29] thermal, [30][31][32][33][34] acoustic, [35][36][37][38] and energy absorption properties of copper and nickel metal foams [39][40][41][42][43][44][45] are studied. The resistance to explosive loads and impact was investigated based on the high energy absorption and dynamic properties of metal foams by Tan et al [46] They measured a significant increase in plastic collapse stress in both subcritical and supercritical speed regimes and found that in the subcritical speed regime translational inertia and to a lesser extent rotational inertia of the cell wall is responsible for the increase in strength rather than shock propagation.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Response of Open‐Cell Metal Foams with Single‐ and Multilayer Shell during Uniaxial Compression Test

Jalilzadeh,

Rohani Nejad,

Khiabani

et al. 2024

Adv Eng Mater

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Metal foams are one of the unique materials that need more attention in terms of mechanical and microstructural characterizations. In the present study, different kinds of metal foams such as Ni, Cu, and a novel type of multi‐layered metal foams with Ni‐Cu and Cu‐Ni coating layer orders have produced and characterized in terms of mechanical response and microstructure of these novel materials during a uniaxial compression test. These multi‐layered metallic foams have a strong mechanical adhesion at the interface due to the nature of electroforming process and the effect of solid solution area at these interfaces. Besides, Multi‐layered metal foams are superior to Ni and Cu pure metal foams in terms of mechanical response, applying a multi‐layered metallic coat with 60 and 69 μm diameter for Ni and Cu improved the yield point of the Ni and Cu single layer metallic foams for 3 and 7 times, respectively. Moreover, in terms of energy absorption density, the multi‐layered metallic shell has improved the energy absorption density for 3 and 5.5 times compared to Ni and Cu metal foams, respectively. This study shows that applying multi layered coatings to metal foams with Ni as the first layer has superior characteristics compared to single layer metal foams.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

Mechanical Response of Open‐Cell Metal Foams with Single‐ and Multilayer Shell during Uniaxial Compression Test

Jalilzadeh,

Rohani Nejad,

Khiabani

et al. 2024

Adv Eng Mater

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“…These materials possess the unique capability to store and dissipate energy, thereby making them useful for applications requiring cushioning or damping phenomena in diverse industrial applications. Large deformation analysis not only helps in determining the cellular solid's loadbearing capacity (load at the initiation of collapse or yield), toughness, and overall response to applied forces but also allows for the evaluation of its ability to undergo buckling and recovery after removal of the load, which is essential for designing safer and more reliable products [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The role of unit cell topology in modulating the compaction response of additively manufactured cellular materials using simulations and validation experiments

Nakarmi,

Kim,

Bezek

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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Additive manufacturing has enabled a transformational ability to create cellular structures (or foams) with tailored topology. Compared to their monolithic polymer counterparts, cellular structures are potentially suitable for systems requiring materials with high specific energy-absorbing capability to provide enhanced damping. In this work, we demonstrate the utility of controlling unit-cell topology with the intent of obtaining a desired stress-strain response and energy density. Using mesoscale simulations that resolve the unit-cell sub-structures, we validate the role of unit-cell topology in selectively activating a buckling mode and thereby modulating the characteristic stress-strain response. Simulations incorporate a linear viscoelastic constitutive model and a hyperelastic model for simulating large deformation of the polymer under both tension and compression. Simulated results for nine different cellular structures are compared with experimental data to gain insights into three different modes of buckling and the corresponding stress-strain response.

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“…33 Total energy loss is considered to be caused by the progressive collapse and compaction of the material. 34 The majority of the energy during the impact process is lost as plastic deformation. 35 But the cushion and corrugated carton undergo not only elastoplastic deformation but also material fracture, damping 36 and so on.…”

Section: Introductionmentioning

confidence: 99%

“…Total energy loss is considered to be caused by the progressive collapse and compaction of the material 34 . The majority of the energy during the impact process is lost as plastic deformation 35 .…”

Section: Introductionmentioning

confidence: 99%

Exploring factors affecting the conversion of the coefficient of restitution to equivalent free fall drop height

Lin,

Ge,

Qian

et al. 2023

Packag Technol Sci

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The coefficient of restitution (COR) is used to estimate the equivalent free fall drop height of packaging during handling and transportation. Various experimental studies were designed to explore factors affecting the conversion of the COR to equivalent free fall drop height. These factors include the number of drops, drop height, drop orientation, drop base, temperature and humidity on the COR. The results indicate that the number of drops and drop orientation are the two most influential factors affecting COR values. As the package undergoes more drops, the COR increases. Among the various orientations, the COR is largest for flat drops, followed by edge and corner orientations. Within flat drops, a smaller impact area results in a smaller COR. Manufacturing joints and the flats, edges and corners adjacent to manufacturing joints tend to yield smaller COR values. A COR correction matrix was developed to correct the conventional COR calculation. This matrix allows engineers to refine COR values based on the number of drops and drop orientations in the field. The matrix‐corrected equivalent free fall drop heights demonstrated an average accuracy of 96%. Compared to the conventional COR calculation method, it effectively reduces errors by a factor of 2–3.

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Stress-strain states and energy absorption in open-cell aluminium foams under hypervelocity impact

Cited by 12 publications

References 56 publications

Mechanical Response of Open‐Cell Metal Foams with Single‐ and Multilayer Shell during Uniaxial Compression Test

Mechanical Response of Open‐Cell Metal Foams with Single‐ and Multilayer Shell during Uniaxial Compression Test

The role of unit cell topology in modulating the compaction response of additively manufactured cellular materials using simulations and validation experiments

Exploring factors affecting the conversion of the coefficient of restitution to equivalent free fall drop height

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