Non-Fourier thermal wave in 2D cellular metamaterials: From transient heat propagation to harmonic band gaps

Shirzadkhani, Razieh; Eskandari, Shahin; Akbarzadeh, Abdolhamid

doi:10.1016/j.ijheatmasstransfer.2023.123917

Cited by 13 publications

(1 citation statement)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent advancements in 3D printing, coupled with the capabilities of metamaterials, have opened up a range of applications. These include deployable materials for various purposes, [ 13 ] reusable energy absorbers, [ 14 ] read‐write mechanical memories, [ 15 , 16 ] and waveguiding materials, [ 17 , 18 ] among others. Since the size of the unit cell in metamaterials ranges from the sub‐micrometer scale to the centimeter scale, they are prone to the emergence of size‐effects.…”

Section: Introductionmentioning

confidence: 99%

Unravelling Size‐Dependent and Coupled Properties in Mechanical Metamaterials: A Couple‐Stress Theory Perspective

Eskandari,

shahryari,

Akbarzadeh

2024

Advanced Science

Self Cite

View full text Add to dashboard Cite

The lack of material characteristic length scale prevents classical continuum theory (CCT) from recognizing size effect. Additionally, the even‐order material property tensors associated with CCT only characterize the materials' centrosymmetric behavior and overlook their intrinsic chirality and polarity. Moreover, CCT is not reducible to 2D and 1D space without adding couples and higher‐order deformation gradients. Despite several generalized continuum theories proposed over the past century to overcome the limitations of CCT, the broad application of these theories in the field of mechanical metamaterials has encountered significant challenges. These obstacles primarily arise from a limited understanding of the material coefficients associated with these theories, impeding their widespread adoption. Implementing a bottom‐up approach based on augmented asymptotic homogenization, a consistent and self‐sufficient effective couple‐stress theory for materials with microstructures in 3D, 2D, and 1D spaces is presented. Utilizing the developed models, material properties associated with axial‐twist, shear‐bending, bending‐twist, and double curvature bending couplings in mechanical metamaterials are characterized. The accuracy of these homogenized models is investigated by comparing them with the detailed finite element models and experiments performed on 3D‐printed samples. The proposed models provide a benchmark for the rational design, classification, and manufacturing of mechanical metamaterials with programmable coupled deformation modes.

show abstract

Section: Introductionmentioning

confidence: 99%

Unravelling Size‐Dependent and Coupled Properties in Mechanical Metamaterials: A Couple‐Stress Theory Perspective

Eskandari,

shahryari,

Akbarzadeh

2024

Advanced Science

Self Cite

View full text Add to dashboard Cite

show abstract

Omnithermal Metamaterials: Designing Universally Thermo-Adjustable Metasurfaces

Yang,

Huang

2024

Diffusionics

View full text Add to dashboard Cite

Designing efficient infrared illusions pose continuous hurdles, from complex operational circumstances to multiple heat distribution mechanisms and manufacturing intricacies. Most recent research efforts have been predominantly concentrated on tackling one issue at a time. In this chapter, we adopt a comprehensive approach by suggesting a kind of reconfigurable metasurface capable of illustrating an illusion in the infrared spectrum whilst preserving visible-light resemblance. The triadic essential modes of heat distribution are taken into consideration in the theoretical designs, with radiation-cavity effects being utilized in the practical construction process. Additionally, this study facilitates the concurrent modification of surface temperature and emissivity. Such metasurfaces prove their worth in fluctuating-temperature environments and transient situations. This summary not only underscores the potential of these adjustable metasurfaces in surmounting difficulties tied to thermal illusion design but also accentuates their flexibility and dependability in assorted settings.

show abstract

A general numerical method for solving the three-dimensional hyperbolic heat conduction equation on unstructured grids

He,

Zhang

2024

Computers & Mathematics with Applications

View full text Add to dashboard Cite

Non-Fourier thermal wave in 2D cellular metamaterials: From transient heat propagation to harmonic band gaps

Cited by 13 publications

References 46 publications

Unravelling Size‐Dependent and Coupled Properties in Mechanical Metamaterials: A Couple‐Stress Theory Perspective

Unravelling Size‐Dependent and Coupled Properties in Mechanical Metamaterials: A Couple‐Stress Theory Perspective

Omnithermal Metamaterials: Designing Universally Thermo-Adjustable Metasurfaces

A general numerical method for solving the three-dimensional hyperbolic heat conduction equation on unstructured grids

Contact Info

Product

Resources

About