Modification of hexachiral unit cell to enhance auxetic stent performance

Amir, Asadi; Ghofrani, Sadegh; Mehrizi, Ali Abouei; Shadalooyi, Ghasem; Kadkhodapour, Javad; Anaraki, Ali Pourkamali

doi:10.1080/15376494.2022.2034074

Cited by 22 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Auxetic tubular structures have shown promise in biomedical applications [137]. They can be utilized in implantable devices [111,[138][139][140][141], tissue engineering scaffolds [142,143], drug delivery systems [26,142,144], biosensors, and diagnostics [145]. Their unique properties, such as improved flexibility, enhanced surface area, and compatibility with biological tissues, make them attractive for various biomedical applications.…”

Section: Biomedical Devicesmentioning

confidence: 99%

“…Vellaparambil et al investigated the mechanical behavior of auxetic endovascular stents and they found that chiral stents can be used in conditions that require greater radial stiffness [139]. Furthermore, various researchers have investigated auxetic stents, including those by Asadi et al [138], Liu et al [116], Shirdel et al [147], and Xue et al [148]. Figure 13 exhibit auxetic stents employed during the research stages.…”

Section: Biomedical Devicesmentioning

confidence: 99%

See 1 more Smart Citation

Potential and applications of auxetic tubular: a review

Ramezani,

Rahmani

2024

Funct. Compos. Struct.

View full text Add to dashboard Cite

Auxetic materials, possessing a negative poisson's ratio, can be arranged in various geometric configurations, such as tubular structures. Unlike conventional materials, which contract in lateral dimensions when stretched longitudinally, auxetic tubular expands in response to applied forces. This review article amalgamates the latest experimental data and insights from preceding scholarly works, offering a detailed analysis of the structural design, fabrication processes, and mechanical characteristics of auxetic tubular structures. The review encompasses an analysis of their tensile properties, comparative evaluations with different materials, impact resistance, enhanced bending, and flexibility. Furthermore, the article explores the wide-ranging applications of auxetic tubular in diverse sectors such as automobile manufacturing, aerospace, medicine, and textiles. Additionally, investigated not only new suggestions and future considerations for the advancement of these materials and structures but also a rigorous examination of the forthcoming and new challenges. This multifaceted approach distinguishes it from prior studies within the same scientific domain.

show abstract

Section: Biomedical Devicesmentioning

confidence: 99%

Section: Biomedical Devicesmentioning

confidence: 99%

Potential and applications of auxetic tubular: a review

Ramezani,

Rahmani

2024

Funct. Compos. Struct.

View full text Add to dashboard Cite

show abstract

“…Tubular, pipelike structures are among the mechanical metamaterials particularly sought in engineering applications. For this reason, numerous proposals can be found in the literature, one group of which concerns medical applications [ 35 , 36 , 37 , 38 , 39 , 40 , 41 ].…”

Section: The Experimentsmentioning

confidence: 99%

An Experimental Study of Auxetic Tubular Structures

2022

View full text Add to dashboard Cite

Auxetic tubular structures are widely known structures, characterized by a negative Poisson’s ratio upon stretching and deformation in the axial and transverse directions, which have numerous application possibilities. In this paper, tubular structures were realized by rolling up planar auxetic structures and using rigid square frames as unit cells. Planar and tubular structures were built from square frames that were 3D printed with plastic or laser-cut from metal. The changes in linear dimensions of the studied structures were based on a hinge mechanism, the functioning of which was experimentally verified on different solutions leading to square unit cells. To connect the square frames of the structure, an innovative solution was used in the form of rotation axes on their surface at a preset distance from the edge of the square frame. The geometric parameter thus introduced was used to determine the relative change in the size of the structure when stretched (i.e., when moving from the closed to the open position).

show abstract

Section: Introductionmentioning

confidence: 99%

“…[56,63,64] Auxetic materials have a number of advantages over materials which exhibit a positive Poisson's ratio such as enhanced indentation resistance, [65] enhanced fracture toughness, [66] and enhanced energy absorption. [67] Moreover, auxetic materials may be utilized in a number of different fields such as biomedical [68][69][70][71][72][73][74] and engineering applications. [75,76] Auxetic behavior has been reported in various materials such as metals, [77][78][79][80] organic systems, [81][82][83] tendons, [84] composites, [85][86][87][88][89][90] 2D materials [91,92] zeolites, [93,94] Yukawa crystals, [95,96] face-centred cubic hard sphere crystals, [58] and silicates such as α-cristobalite, [32,33,37,40] β-cristobalite, [32,38,39] and stishovite.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Properties of CO₂‐II with Particular Emphasis on Its Auxetic Potential

Gambin

Dudek

et al. 2022

Physica Status Solidi (b)

View full text Add to dashboard Cite

Carbon dioxide has a rich phase diagram boasting a number of different solid polymorphs. One such solid is CO2‐II, a high‐pressure polymorph of carbon dioxide. Herein, the structural, mechanical, and vibrational properties of CO2‐II are studied using first‐principles density functional theory simulations. In particular, it is shown that the CO2‐II single crystal has the potential to exhibit off‐axis auxetic behavior (negative Poisson's ratio) in the (010) and (001) plane. Moreover, the auxetic behavior is pressure dependent in the pressure range of 15–20 GPa, with an increase in pressure resulting in an increased auxetic behavior, for loading in certain directions, of this system. This anomalous mechanical property is also studied through the use of Raman and infrared spectroscopy. The results obtained suggest that the auxetic behavior of CO2‐II may be the result of the interplay between rotations and distortions of the system.

show abstract

Modification of hexachiral unit cell to enhance auxetic stent performance

Cited by 22 publications

References 45 publications

Potential and applications of auxetic tubular: a review

Potential and applications of auxetic tubular: a review

An Experimental Study of Auxetic Tubular Structures

The Mechanical Properties of CO₂‐II with Particular Emphasis on Its Auxetic Potential

Contact Info

Product

Resources

About

Modification of hexachiral unit cell to enhance auxetic stent performance

Cited by 22 publications

References 45 publications

Potential and applications of auxetic tubular: a review

Potential and applications of auxetic tubular: a review

An Experimental Study of Auxetic Tubular Structures

The Mechanical Properties of CO2‐II with Particular Emphasis on Its Auxetic Potential

Contact Info

Product

Resources

About

The Mechanical Properties of CO₂‐II with Particular Emphasis on Its Auxetic Potential