Impact resistance and energy absorption of regular and functionally graded hexagonal honeycombs with cell wall material strain hardening

Mousanezhad, Davood; Ghosh, Ranajay; Ajdari, Amin; Nayeb-Hashemi, Hamid; Vaziri, Ashkan

doi:10.1016/j.ijmecsci.2014.10.012

Cited by 72 publications

(24 citation statements)

References 56 publications

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“…In addition, Figure 14 also reveals that the maximum crushing strain (densification strain) of the uniform model is always smaller than that of the graded one under the densification-velocity impact, and this agrees with the result. 44 To compare the energy absorption of these models, another normalized energy ratio is defined…”

Section: Energy Absorbed Under An Initial Velocitymentioning

confidence: 99%

Energy-absorbing performance of graded Voronoi foams

Lin

Zhang

et al. 2019

Journal of Cellular Plastics

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Cellular foams are usually used as energy absorbers in engineering such as cushioning to alleviate the impact energy. To explore their energy absorption property, Voronoi foams with different density gradients were established. Numerical simulations were conducted by using Ls-dyna 971. Two loading conditions were considered: the constant velocity impact and the densification velocity impact. The results indicate that the energy absorption is closely related to loading conditions and profiles of density gradients. Therefore, it is of great importance to select suitable graded foams accordingly. This study paves the way for engineering applications of graded cellular materials as protective devices.

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Section: Energy Absorbed Under An Initial Velocitymentioning

confidence: 99%

Energy-absorbing performance of graded Voronoi foams

Lin

Zhang

et al. 2019

Journal of Cellular Plastics

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“…Results showed that introducing density functional gradation in hexagonal honeycombs brought about new deformation patterns due to changes in material distribution and preferential cell wall collapse of the weaker members [27]. Wang et al [28,29] analyzed the energy absorption and the crashworthiness of cellular structure with a linear density gradient under a mass projectile, finding that increasing the density along the loading direction might absorb more energy than a uniform cellular metal or a cellular metal with the density decreasing, it was a good choice for protecting the impacting object.…”

Section: A N U S C R I P Tmentioning

confidence: 99%

Dynamic response of functionally graded cellular materials based on the Voronoi model

Zhang

Wang

Zhao

2016

Composites Part B: Engineering

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“…Metamaterials, a sub-class of cellular materials, with a periodic three-dimensional architecture, carefully engineered structure, and mechanical properties primarily dependent on their architecture rather than their constituent material, are in fact the most recent development in the ongoing quest for novel materials. They have shown their potential for blast protection [46,47] and impact energy absorption applications [48], while maintaining a relatively high stiffness and low density [49][50][51]. Additively-manufactured metamaterials with complex structures and micro scale components might revolutionize the conventional energy absorbing materials, not only due to their large densification strains and high strength to weight ratio, but also due to their shape recovery capabilities.…”

Section: Introductionmentioning

confidence: 99%

Dynamic energy absorption characteristics of additively-manufactured shape-recovering lattice structures

Davami

Mohsenizadeh

Munther

et al. 2019

Mater. Res. Express

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With the advent of additive manufacturing, fabrication of complex structures with high efficiency for energy absorption and blast and impact mitigation has entered a new era. In this research the role of the architecture and material properties on the static and dynamic energy absorption properties of additively-manufactured complex cellular structures out of two different materials were studied under puncture and crush tests. A finite element simulation of the unit cell was also conducted to study the effect of loading rate on the final response of the material where the results showed good agreement with the experimental observations. It is shown that the studied additively manufactured structures were able to recover their shape significantly after a major deformation due to the impact. These results show the potential of additive manufacturing as a versatile tool for creating structures with complex geometries for energy absorption.

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Impact resistance and energy absorption of regular and functionally graded hexagonal honeycombs with cell wall material strain hardening

Cited by 72 publications

References 56 publications

Energy-absorbing performance of graded Voronoi foams

Energy-absorbing performance of graded Voronoi foams

Dynamic response of functionally graded cellular materials based on the Voronoi model

Dynamic energy absorption characteristics of additively-manufactured shape-recovering lattice structures

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