A general strategy for performance enhancement of negative stiffness mechanical metamaterials

Tan, Xuezhi; Wang, Lianchao; Zhu, Shengnan; Chen, Shuai; Wang, Bing; Kadic, Muamer

doi:10.1016/j.euromechsol.2022.104702

Cited by 39 publications

(18 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 20–37 ] Mechanical metamaterials are rationally designed structures that can exhibit counterintuitive mechanical properties based primarily on their design rather than their chemical composition. The most studied cases and well‐known examples of metamaterials with extraordinary mechanical properties pertain to those with negative properties such as a negative Poisson's ratio (auxetic behavior), [ 20,38–41 ] negative stiffness, [ 42–45 ] and negative compressibility. [ 42,46–48 ] Most notably, auxetic mechanical metamaterials have been proven to exhibit superior indentation resistance, [ 49 ] energy absorption, [ 50,51 ] and wave attenuation [ 14,52 ] in comparison to many conventional non‐auxetic materials.…”

Section: Introductionmentioning

confidence: 99%

Micro‐Scale Mechanical Metamaterial with a Controllable Transition in the Poisson's Ratio and Band Gap Formation

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Micro‐Scale Mechanical Metamaterial with a Controllable Transition in the Poisson's Ratio and Band Gap Formation

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…Metamaterials with tunable mechanical properties [11][12][13][14] , in particular having a rich dynamical behavior [15][16][17][18][19][20][21][22] or exhibiting non-reciprocity 23,24 , are extremely attractive for numerous applications, such as control of the propagation of acoustic and elastic waves [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] . Beyond the homogenization limit, the idea of dynamic shear, bulk, or mass density is commonly used and accepted for waves 41 .…”

Section: Introductionmentioning

confidence: 99%

Non-reciprocal and Non-Newtonian Mechanical Metamaterials

Wang

Martínez

Ulliac

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Non-Newtonian liquids are characterized by a stress and velocity-dependent dynamical response. In elasticity, and in particular in the field of phononics, reciprocity in the equations acts against obtaining a directional response for passive media. Active stimuli-responsive materials have been conceived to overcome it. Significantly, Milton and Willis have shown theoretically in 2007 that quasi-rigid bodies containing masses at resonance can display a very rich dynamical behavior, hence opening a route toward the design of non-reciprocal and non-Newtonian metamaterials. In this paper, we design a solid structure that displays unidirectional shock resistance, thus going beyond Newton’s second law in analogy to non-Newtonian fluids. We design the mechanical metamaterial with finite element analysis and fabricate it using 3D printing at the centimetric scale (with fused deposition modeling – FDM) and at the micrometric scale (with two-photon lithography – TPL). The non-Newtonian elastic response is measured via dynamical velocity-dependent experiments. Reversing the direction of the impact, we further highlight the intrinsic non-reciprocal response.

show abstract

“…Mechanical metamaterials are rationally designed structures that can exhibit counterintuitive mechanical properties based primarily on their design rather than their chemical composition. Some of the most commonly studied instances of such extraordinary mechanical properties are negative Poisson's ratio (auxetic behavior) [20,[38][39][40][41], negative stiffness [42][43][44][45] and negative compressibility [42,[46][47][48]. Most notably, auxetic mechanical metamaterials have been proven to exhibit superior indentation resistance [49], energy absorption [50,51] and wave attenuation [14,52] in comparison to many conventional non-auxetic materials.…”

Section: Introductionmentioning

confidence: 99%

Micro-scale Mechanical Metamaterial with a Controllable Transition in the Poisson's Ratio and Band Gap Formation

Dudek,

Martínez,

Ulliac

et al. 2023

Preprint

View full text Add to dashboard Cite

The ability to change significantly mechanical and wave propagation properties of a structure without rebuilding it has been one of the main challenges in the field of mechanical metamaterials. This stems from the enormous appeal that, especially in the case of micro-scale systems, such tunable behavior may offer from the perspective of applications ranging from biomedical to protective devices. In this work, a novel micro-scale mechanical metamaterial is proposed that can undergo a transition from one type of configuration to another, with one configuration having a very negative Poisson's ratio, corresponding to strong auxeticity, and the other having a highly positive Poisson's ratio. The formation of phononic band gaps, at the same time, can be controlled, which can be very useful in the design of vibration dampers and sensors. Finally, it is shown experimentally that reconfiguration of the system, leading to a change in its properties, can be induced and controlled remotely through application of a magnetic field, thanks to appropriately distributed magnetic inclusions.

show abstract

A general strategy for performance enhancement of negative stiffness mechanical metamaterials

Cited by 39 publications

References 86 publications

Micro‐Scale Mechanical Metamaterial with a Controllable Transition in the Poisson's Ratio and Band Gap Formation

Micro‐Scale Mechanical Metamaterial with a Controllable Transition in the Poisson's Ratio and Band Gap Formation

Non-reciprocal and Non-Newtonian Mechanical Metamaterials

Micro-scale Mechanical Metamaterial with a Controllable Transition in the Poisson's Ratio and Band Gap Formation

Contact Info

Product

Resources

About