Theoretical, numerical and experimental analysis of three-dimensional double-V honeycomb

Gao, Qiang; Wang, Liangmo; Zhou, Zixuan; Ma, Zheng-Dong; Wang, Chenzhi; Wang, Yuanlong

doi:10.1016/j.matdes.2017.11.024

Cited by 150 publications

(53 citation statements)

References 31 publications

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“…The effect of design changes on Young's modulus and Poisson's ratio can be adjusted and improved before manufacture [121], and FEM can validate analytical results [151][152][153][154][155][156][157][158]. Full validation of FEM often requires comparison and agreement with experimental testing [159][160][161][162][163][164][165][166][167], which can potentially lead to extrapolation or tailoring of models for specific applications. Experimental test data can be input into FEM solvers to validate and develop material models [168].…”

Section: Modelling Auxetic Materials and Structuresmentioning

confidence: 99%

“…As alternatives to often inhomogeneous foams or textiles, the creation of auxetic materials with repeatable structures using various AM techniques has been investigated (e.g., fused deposition modelling [137], selective electron beam melting [175], selective laser sintering [247] and lithography-based ceramic manufacturing [248]). AM is a natural extension of FEM, as the existing modelling file can be converted to be compatible with most AM technologies to fabricate the modelled structure [167,[249][250][251][252]. The AM structure can be experimentally tested to validate and potentially improve FEM [162,[253][254][255], and key parameters can consequently be tuned and investigated with a particular application in mind.…”

Section: Additively Manufactured Auxetic Materials and Structuresmentioning

confidence: 99%

“…AM structure's Poisson's ratio can be tuned by altering the geometry of a unit cell [263][264][265], enabling the design and analysis of novel auxetic structures using FEM [266,267] to help validate existing analytical formulae. Matlab has also been used to run FEM parametric analysis [167]. NinjaFlex ® , (Ninjatek, Manheim, PA, USA) an elastic and flexible thermoplastic PU, has been used in the AM of auxetics [137,[268][269][270], and in impact testing studies [269,270], with FEM used to highlight auxetic structures' desired shock absorption capacity.…”

Section: Additively Manufactured Auxetic Materials and Structuresmentioning

confidence: 99%

See 2 more Smart Citations

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Duncan

Shepherd

Moroney³

et al. 2018

Applied Sciences

239

151

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Following high profile, life changing long term mental illnesses and fatalities in sports such as skiing, cricket and American football-sports injuries feature regularly in national and international news. A mismatch between equipment certification tests, user expectations and infield falls and collisions is thought to affect risk perception, increasing the prevalence and severity of injuries. Auxetic foams, structures and textiles have been suggested for application to sporting goods, particularly protective equipment, due to their unique form-fitting deformation and curvature, high energy absorption and high indentation resistance. The purpose of this critical review is to communicate how auxetics could be useful to sports equipment (with a focus on injury prevention), and clearly lay out the steps required to realise their expected benefits. Initial overviews of auxetic materials and sporting protective equipment are followed by a description of common auxetic materials and structures, and how to produce them in foams, textiles and Additively Manufactured structures. Beneficial characteristics, limitations and commercial prospects are discussed, leading to a consideration of possible further work required to realise potential uses (such as in personal protective equipment and highly conformable garments).

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Section: Modelling Auxetic Materials and Structuresmentioning

confidence: 99%

Section: Additively Manufactured Auxetic Materials and Structuresmentioning

confidence: 99%

Section: Additively Manufactured Auxetic Materials and Structuresmentioning

confidence: 99%

See 1 more Smart Citation

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Duncan

Shepherd

Moroney³

et al. 2018

Applied Sciences

239

151

View full text Add to dashboard Cite

show abstract

“…Poisson's ratio increased with the increasing of tensor angle and stuffer angle. [65] Chen et al [70] paid attention to the vibration damping mechanisms of 3D double-arrowhead auxetic metamaterials made of carbon fiber-reinforced polymer. Based on double-V auxetic structures, double-U structures (Figure 8c) were created through tailoring the geometry parameters.…”

Section: Re-entrant Structuresmentioning

confidence: 99%

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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“…Recent studies have explored the use of additive manufacturing (e.g., selective metal laser or electron beam melting) [35][36][37][38][39] and metal casting [40,41] to produce non-stochastic cellular materials. This has the advantage of allowing in situ geometric and dimensional control, thus, they are able to display tailored properties [42].…”

Section: Introductionmentioning

confidence: 99%

Thin-Rib and High Aspect Ratio Non-Stochastic Scaffolds by Vacuum Assisted Investment Casting

Carneiro¹,

Puga

Peixinho³

et al. 2019

JMMP

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Cellular structures are a classic route to obtain high values of specific mechanical properties. This characteristic is advantageous in many fields, from diverse areas such as packaging, transportation industry, and/or medical implants. Recent studies have employed additive manufacturing and casting techniques to obtain non-stochastic cellular materials, thus, generating an in situ control on the overall mechanical properties. Both techniques display issues, such as lack of control at a microstructural level in the additive manufacturing of metallic alloys and the difficulty in casting thin-rib cellular materials (e.g., metallic scaffolds). To mitigate these problems, this study shows a combination of additive manufacturing and investment casting, in which vacuum is used to assist the filling of thin-rib and high aspect-ratio scaffolds. The process uses 3D printing to produce the investment model. Even though, vacuum is fundamental to allow a complete filling of the models, the temperatures of both mold and casting are important to the success of this route. Minimum temperatures of 250 °C for the mold and 700 °C for the casting must be used to guarantee a successful casting. Cast samples shown small deviations relatively to the initial CAD model, mainly small expansions in rib length and contraction in rib thickness may be observed. However, these changes may be advantageous to obtain higher values of aspect ratio in the final samples.

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Theoretical, numerical and experimental analysis of three-dimensional double-V honeycomb

Cited by 150 publications

References 31 publications

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection

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

Thin-Rib and High Aspect Ratio Non-Stochastic Scaffolds by Vacuum Assisted Investment Casting

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