Mechanical properties of hybrid metamaterial with auxetic chiral cellular structure and silicon filler

Novak, Nejc; Krstulović‐Opara, Lovre; Ren, Zoran

doi:10.1016/j.compstruct.2019.111718

Cited by 70 publications

(28 citation statements)

References 32 publications

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“…[ 19 ] Lattice structures and auxetic metamaterials have been studied at both quasistatic [ 20 ] and dynamic loading conditions. [ 21–29 ] However, coupled thermomechanical effects related to changes of strain rate and temperature are scarce. For polymers, the performance of additively manufactured Nylon 12 lattice structures at different temperatures has been investigated using the drop‐weight dynamic loading conditions.…”

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confidence: 99%

Impact Behavior of Additively Manufactured Stainless Steel Auxetic Structures at Elevated and Reduced Temperatures

et al. 2020

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Metamaterials produced using additive manufacturing represent advanced structures with tunable properties and deformation characteristics. However, the manufacturing process, imperfections in geometry, properties of the base material as well as the ambient and operating conditions often result in complex multiparametric dependence of the mechanical response. As the lattice structures are metamaterials that can be tailored for energy absorption applications and impact protection, the investigation of the coupled thermomechanical response and ambient temperature‐dependent properties is particularly important. Herein, the 2D re‐entrant honeycomb auxetic lattice structures additively manufactured from powdered stainless steel are subjected to high strain rate uniaxial compression using split Hopkinson pressure bar (SHPB) at two different strain rates and three different temperatures. An in‐house developed cooling and heating stages are used to control the temperature of the specimen subjected to high strain rate impact loading. Thermal imaging and high‐speed cameras are used to inspect the specimens during the impact. It is shown that the stress–strain response as well as the crushing behavior of the investigated lattice structures are strongly dependent on both initial temperature and strain rate.

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confidence: 99%

Impact Behavior of Additively Manufactured Stainless Steel Auxetic Structures at Elevated and Reduced Temperatures

et al. 2020

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“…Due to the remarkable comprehensive mechanical properties, more researchers turned their attention to composite AMMs, such as carbon fiber-reinforced composites [172] and metallic composites with flexible fillers. [173,174] It has been proved that aluminum-based composite AMMs with polymer fillers have 3D chiral VerWhitePlus [44] TangoBlackPlus FLX980 [52] FullCure850 VeroGray [124] VeroBlue RGD840 [39] 2D re-entrant VeroWhite and TangoPlus [125] VeroWhite and DM9760 [59] 3D re-entrant VeroWhitePlus and TangoBlackPlus [126] Missing ribs VeroWhite and TangoPlus [38] Other TangoPlus [106] FDM 2D/3D chiral PLA [127] 2D re-entrant PLA [128] SLA 2D chiral Tough resin [129] 3D chiral Photosensitive resin [45] 2D [30,40] 2D re-entrant TPU [138] Perforation Lexan polycarbonate sheet [139] Aluminum alloy T6061 [140] Other manufacturing methods Mold casting 2D re-entrant PDMS [141] Other (porous structure) Silicone rubber [104,105,142] Vacuum-casting technique 2D chiral 8040 two-part resin [143] Molding forming and assembly 2D chiral Carbon fiber-/glass fiber-reinforced composite [144][145][146] Aluminum alloy T6061-T051, carbon fiber epoxy composite [147] Assembly 2D chiral Bimetallic strips [148] Ni 48 Ti 46 Cu 6 [149] 3D re-entrant Carbon fiber-reinforced polymer [70] Assembly and laser welding 3D re-entrant Steel ST13 [65] Hot compression/ triaxial hot compression Auxetic foam PU foam [94][95]…”

Section: Other Manufacturing Methodsmentioning

confidence: 99%

“…[173] The composite AMMs are usually prepared by the combination of different manufacturing methods. In the work of Novaka et al, [174] auxetic chiral structure using copper alloy was first fabricated via the selective electron beam melting method. Then, the silicon filler was infiltrated into the specimens under vacuum conditions.…”

Section: Other Manufacturing Methodsmentioning

confidence: 99%

“…Due to the remarkable comprehensive mechanical properties, more researchers turned their attention to composite AMMs, such as carbon fiber‐reinforced composites and metallic composites with flexible fillers . It has been proved that aluminum‐based composite AMMs with polymer fillers have outstanding elastic modulus, compressive strength, and energy absorption .…”

Section: Manufacturing Methods and Materialsmentioning

confidence: 99%

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Progress in Auxetic Mechanical Metamaterials: Structures, Characteristics, Manufacturing Methods, and Applications

et al. 2020

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Auxetic mechanical metamaterials (AMMs), as an exciting paradigm of metamaterials, have attracted increasing attention due to their interesting mechanical properties (e.g. negative Poisson's ratio), as well as the emergence of advanced manufacturing technology (e.g. 3D printing). Although various reviews on AMMs, their structures, properties, and applications, have existed, it still lacks a comprehensive review in terms of manufacturing methods. Herein, the latest progress in AMMs is extensively reviewed, including AMMs' structures, characteristics, manufacturing methods, and applications. In addition, the current challenges and future works of AMMs are concluded and discussed. This Review aims to serve as a collection of knowledge that supplies more comprehensive understanding and inspiration to support further developments of AMMs from the perspective of design and manufacturing.

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“…Given the powder bed can only contain one fusible material at a time, multi-material parts are usually comprised of one base powder (typically metallic) and another non-fusible support powder/material. A novel multi-material design was proposed consisting of an auxetic chiral meta-cell that is permeated with silicon to make a hybrid material [153]. The chiral shape used corresponds to the tenth eigenmode of the regular cubic unit-cell, the behaviour of which is well known in the literature.…”

Section: Electron Beam Melting (Ebm)mentioning

confidence: 99%

Additive Manufacture of Small-Scale Metamaterial Structures for Acoustic and Ultrasonic Applications

et al. 2021

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Acoustic metamaterials are large-scale materials with small-scale structures. These structures allow for unusual interaction with propagating sound and endow the large-scale material with exceptional acoustic properties not found in normal materials. However, their multi-scale nature means that the manufacture of these materials is not trivial, often requiring micron-scale resolution over centimetre length scales. In this review, we bring together a variety of acoustic metamaterial designs and separately discuss ways to create them using the latest trends in additive manufacturing. We highlight the advantages and disadvantages of different techniques that act as barriers towards the development of realisable acoustic metamaterials for practical audio and ultrasonic applications and speculate on potential future developments.

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Mechanical properties of hybrid metamaterial with auxetic chiral cellular structure and silicon filler

Cited by 70 publications

References 32 publications

Impact Behavior of Additively Manufactured Stainless Steel Auxetic Structures at Elevated and Reduced Temperatures

Impact Behavior of Additively Manufactured Stainless Steel Auxetic Structures at Elevated and Reduced Temperatures

Progress in Auxetic Mechanical Metamaterials: Structures, Characteristics, Manufacturing Methods, and Applications

Additive Manufacture of Small-Scale Metamaterial Structures for Acoustic and Ultrasonic Applications

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