Novel self-similar re-entrant auxetic metamaterials (SREAM): Design, mechanical property, and geometric optimization

Peng, Dongdong; Hou, Runsheng; Hu, Jinglu; Chen, Lin; Liu, Yuqing; Qin, Lei

doi:10.1016/j.polymertesting.2023.108015

Cited by 11 publications

(2 citation statements)

References 49 publications

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“…Zhang et al [29] designed a mechanical metamaterial that exhibits regular local deformation under static load and provided valuable insights into the local deformation and phase transition phenomena of these kinds of metamaterials. Dong et al [30] developed a novel auxetic metamaterial and evaluated its auxetic properties under quasi-static compression; the study confirmed that the proposed configuration has good subsidiarity and stiffness. Zhang et al [31] designed a reconfigurable metamaterial based on an ordinary steady-state metamaterial, and verified experimentally that the bearing capacity of the optimized metamaterial is four times more than that of the switching force.…”

Section: Introductionmentioning

confidence: 84%

Co-Design of Mechanical and Vibration Properties of a Star Polygon-Coupled Honeycomb Metamaterial

Yong,

Li,

et al. 2024

Applied Sciences

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Based on the concept of component assembly, a novel star polygon-coupled honeycomb metamaterial, which achieves a collaborative improvement in load-bearing capacity and vibration suppression performance, is proposed based on a common polygonal structure. The compression simulation and experiment results show that the load-bearing capacity of the proposed metamaterial is three times more than that of the initial metamaterial. Additionally, metal pins are attached and particle damping is applied to the metamaterial to regulate its bandgap properties; the influence of configuration parameters, including the size, number, position, and material of the metal pins, on bandgaps is also investigated. The results show that the bandgap of the proposed metamaterial can be conveniently and effectively regulated by adjusting the parameters and can effectively suppress vibrations in the corresponding frequency band. Particle damping can be used to continuously adjust the frequency of the bandgap and further enhance the vibration suppression capacity of the metamaterial in other frequency bands. This paper provides a reference for the design and optimization of metamaterials.

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Section: Introductionmentioning

confidence: 84%

Co-Design of Mechanical and Vibration Properties of a Star Polygon-Coupled Honeycomb Metamaterial

Yong,

Li,

et al. 2024

Applied Sciences

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“…Therefore, conducting OCA tests requires careful consideration and control of these factors to ensure accurate results. Drawing from prior testing experience, numerous testing technologies have been embraced to enhance testing accuracy 33–35 …”

Section: Methodsmentioning

confidence: 99%

Large strain mechanical behaviors of optically clear adhesives for flexible electronic devices under different temperature, humidity, and strain rates

Cao,

Es'haghioskui,

Sadeghzade

et al. 2024

J of Applied Polymer Sci

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Optically clear adhesives (OCAs), a type of polymer pressure‐sensitive adhesive, are valued for their transparency, strong bonding, thermal stability, and reliability in flexible electronics. Accurately determining the mechanical properties of OCAs is importance for effectively assessing the structural integrity of foldable screens in finite element simulations. However, previous studies have primarily focused on small strain and conventional environmental conditions. To address this gap, the present study investigates the mechanical behaviors of OCAs under extreme conditions, including large strain (up to 1000%), high/low temperatures (−40, −20, 0, 25, 65, and 80°C), and high humidity (95% relative humidity). Specifically, the tensile, simple shear, and creep properties of OCAs have been assessed in an attempt to explore their visco‐hyperelastic behavior. The experimental findings indicate that OCA exhibits noticeable temperature sensitivity and viscoelasticity, along with volume‐incompressible properties. Notably, when the temperature is varied from −40 to 25°C and from 25 to 80°C, the modulus of OCA experiences an average reduction of 84% and 41% respectively. Moreover, it has been observed that humidity has a negligible effect on the material's modulus. The Yeoh model and Prony series are employed for fitting purposes. The proposed fitting parameters are subsequently validated through numerical simulations of three‐point bending case studies. Remarkably, the simulation results closely matched with the experimental data, with errors remaining below 10%.

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A metamaterial with enhanced effective stiffness and negative Poisson's ratio for frictional energy dissipation

Lv,

2024

European Journal of Mechanics - A/Solids

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Novel self-similar re-entrant auxetic metamaterials (SREAM): Design, mechanical property, and geometric optimization

Cited by 11 publications

References 49 publications

Co-Design of Mechanical and Vibration Properties of a Star Polygon-Coupled Honeycomb Metamaterial

Co-Design of Mechanical and Vibration Properties of a Star Polygon-Coupled Honeycomb Metamaterial

Large strain mechanical behaviors of optically clear adhesives for flexible electronic devices under different temperature, humidity, and strain rates

A metamaterial with enhanced effective stiffness and negative Poisson's ratio for frictional energy dissipation

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