AuxeticPorous materialsStructuralFunctionalMechanical metamaterials are an extraordinary class of materials that harness their unusual characteristics from the geometrical features. Herein, we report a design strategy to decipher anisotropic and aperiodic nonwovens as auxetic metamaterials by carefully decorating ...
Here, using computational models and experimental tests, we studied the non-affinity of the deformations taking place in a special class of multi-material mechanical metamaterials that are made from two distinct phases, namely a hard phase and a soft phase. We aimed to separate the non-affinity ...
Nonlocal interaction engineering of 2D roton-like dispersion relations in acoustic and mechanical metamaterials. Commun. Mater. 3, 35 (2022). CAS Google Scholar Dudek, K. K., Martínez, J. A. I., Ulliac, G. & Kadic, M. Micro-scale auxetic hierarchical mechanical metamaterials for shape ...
Static mechanical non-reciprocity is mainly generated by combining large geometrical non-linearity with suitable asymmetry, specifically by the distinct nonlinear large deformation behavior of metamaterials under different-direction excitation [46], [50]. Knowledge of the non-linear deformation features that...
AUXETIC materialsSTRESS-strain curvesELASTIC modulusThis research presents a novel design method for mechanical metamaterials with programmable Poisson's ratio. Poisson's ratio of metamaterials can be quantitatively controlled by geometric parameters such as the side length of the rhombus, rhombus angle, ...
mechanical propertiesPoisson's ratiorotating rigid unitsOver the years, great advances have been made in the field of auxetic metamaterials where one of the main focuses was the production of systems which can be produced through simple and relatively inexpensive means. In this work, auxetic systems...
Mechanical metamaterialsCurved layered manufacturingAuxeticsCyclic loadingFused deposition modelingPurpose: While additive manufacturing via melt-extrusion of plastics has been around for more than several decades, its application to complex geometries has been hampered by the discretization of parts into ...
auxeticfinite element analysismechanical metamaterialsmechanical propertiesPoisson's ratiorotating rigid unitsIn this work, we investigate the deformation mechanism of auxetic hierarchical rotating square systems through a dynamics approach. We show how their deformation behaviour, hence their mechanical ...
Auxetic metamaterialsIn the present work, a novel flexibility-based nonlocal frame element for size-dependent analyses of nano-sized frame-like structures is proposed. The material small-scale effect is consistently represented by the stress-driven nonlocal integral model and the element equation is ...
Auxetic materialNear-zero thermal expansionNegative Poisson's ratioCubic symmetryFour types of three-dimensional (3-D) metallic metamaterials with tailorable thermo-mechanical properties are designed. For the first three types, the structure-property relations are studied by adjusting design parameters ...