Architectural Design and Additive Manufacturing of Mechanical Metamaterials: A Review

Lu, Chenxi; Hsieh, Meng-Ting; Huang, Zhifeng; Zhang, Chi; Lin, Yaojun; Shen, Qiang; Chen, Fei; Zhang, Lianmeng

doi:10.1016/j.eng.2021.12.023

Cited by 83 publications

(32 citation statements)

References 239 publications

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“…[109] However, fabricating such periodic architectures can be challenging and involve complex manufacturing techniques. [110] To this end, kirigami cutting and subsequently stretching (or folding) provides a scalable and straightforward approach to designing and fabricating metamaterials.…”

Section: Wave Propagation Manipulationmentioning

confidence: 99%

Engineering by Cuts: How Kirigami Principle Enables Unique Mechanical Properties and Functionalities

et al. 2022

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Kirigami, the ancient art of paper cutting, has evolved into a design and fabrication framework to engineer multi‐functional materials and structures at vastly different scales. By slit cutting with carefully designed geometries, desirable mechanical behaviors—such as accurate shape morphing, tunable auxetics, super‐stretchability, buckling, and multistability—can be imparted to otherwise inflexible sheet materials. In addition, the kirigami sheet provides a versatile platform for embedding different electronic and responsive components, opening up avenues for building the next generations of metamaterials, sensors, and soft robotics. These promising potentials of kirigami‐based engineering have inspired vigorous research activities over the past few years, generating many academic publications. Therefore, this review aims to provide insights into the recent advance in this vibrant field. In particular, this paper offers the first comprehensive survey of unique mechanical properties induced by kirigami cutting, their underlying physical principles, and their corresponding applications. The synergies between design methodologies, mechanics modeling, advanced fabrication, and material science will continue to mature this promising discipline.

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Section: Wave Propagation Manipulationmentioning

confidence: 99%

Engineering by Cuts: How Kirigami Principle Enables Unique Mechanical Properties and Functionalities

et al. 2022

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“…Architected materials, engineered at the scale of unit cell, exploit the structural geometry to exhibit unusual mechanical [1][2][3][4][5] and wave dispersion [6][7][8][9] properties that are unattainable from a bulk, continuum model. The underlying unusual quasi-static and peculiar dynamic properties offered by architected materials are applicable to various length scales for phonon or acoustic/elastic waves control [10][11][12][13][14][15] such as phononic crystals and acoustic metamaterials and lightweight responsive mechanical structures [9] i.e.…”

Section: Introductionmentioning

confidence: 99%

“…With this emerging technology, complex architected materials can be realized from meter scale down to the nanoscale for a wide range of materials including metal, ceramics, polymer and composites with high precision and accuracy. In literature, the term architected materials have been used analogous to metamaterials for wave manipulation [12,14,19] and fostering quasi-static properties for mechanical energy absorption and impact loading [1][2][3][4][5]. However, this research work focuses on elastic wave control for vibroacoustic applications.…”

Section: Introductionmentioning

confidence: 99%

Design and fabrication of 3D-printed composite metastructure with subwavelength and ultrawide bandgaps

2023

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Architected composite metastructures can exhibit a subwavelength ultrawide bandgap with prominent emerging applications in the structural vibration and noise control and, elastic wave manipulation. The present study implemented both forward and inverse design methods based on numerical simulations and machine learning methods, respectively to design and fabricate an architected composite metastructure exhibiting subwavelength and ultrawide bandgaps. The multilayer perceptron and radial basis function neural networks are developed for the inverse design of the composite metastructure and their accuracy and computation time are compared. The band structure revealed the presence of subwavelength and ultrawide bandgaps generated through local resonance and structural modes of the periodic composite lattice. Both in-plane and out-of-plane local resonant modes of the periodic lattice structure were responsible for inducing the bandgaps. The findings are confirmed by calculating numerical wave transmission curves and experiment tests on the fabricated supercell structures, utilising 3D-printing technology. Both numerical and experimental results validate the machine learning prediction and the presence of subwavelength and ultrawide bandgap was observed. The design approach, research methodology and proposed composite metastructure will have a wide range of application in the structural vibration control and shock absorption.

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“…Their development goes well with the growing interest in additive manufacturing technologies, which are very competitive with respect to traditional manufacturing technologies due to the greater possibilities they offer in obtaining intricate shapes, of good quality and in reasonable times (Askari et al, 2020) (Lu et al, 2022). By exploiting additive manufacturing technology, it is in fact much easier to create products with complex architectures.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, the targeted design of metamaterials with lattice structures has garnered signi cant interest from the scienti c community and has involved the use of a wide range of materials, both metallic (Wadley et al, 2003), (Li et al, 2016) and polymeric (Lu et al, 2022), (Surjadi et al, 2019). The unique properties that can be obtained from lattice structures when examined from a mechanical point of view are high stiffness and mechanical strength or greater energy absorption in relation to reduced weight and lower density (Yan et al, 2015), (Maskery et al, 2016), (Leary et al, 2016), (Zhang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Energy absorbing 4D printed meta-sandwich structures: load cycles and shape recovery

Gisario¹,

Desole²,

Mehrpouya³

et al. 2023

Preprint

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The present study investigates the behavior of solid cellular structures in polylactic acid (PLA), created using FDM technology (Fusion Deposition Modelling). The geometries are permanently deformed by compressive stress and then subjected to the recovery of the shape, through the application of a thermal stimulus. The structures are analyzed for medium-high and medium-low compression stresses, evaluating the mechanical properties and the absorption energy as the number of cycles varies. The study shows that the ability to absorb energy is related to the density of the model, as well as the degree of damage suffered, which increases with increasing number of load cycles. The strongest geometry is the Lozenge grid, which is the most reliable, because it shows no damage with increasing compression cycles and keeps its absorption rate almost constant. The increase in Lozenge grid density leads to an improvement in both mechanical strength and absorption energy, as well as a lower incidence of microcracks in the geometry itself due to the repeated load cycles.

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Architectural Design and Additive Manufacturing of Mechanical Metamaterials: A Review

Cited by 83 publications

References 239 publications

Engineering by Cuts: How Kirigami Principle Enables Unique Mechanical Properties and Functionalities

Engineering by Cuts: How Kirigami Principle Enables Unique Mechanical Properties and Functionalities

Design and fabrication of 3D-printed composite metastructure with subwavelength and ultrawide bandgaps

Energy absorbing 4D printed meta-sandwich structures: load cycles and shape recovery

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