Mechanical metamaterials with negative Poisson's ratio have attracted widespread attention
in recent decades due to their unique mechanical properties. This metamaterial often …

Auxetic structures, characterised by a negative Poisson's ratio, exhibit the unique property of
expanding in all directions under tensile loading and contracting in all directions when …

The re-entrant auxetic topology was one of the first unit-cells proposed to build cellular
auxetic structures. This unit cell (UC) is still widely used in energy-absorbing systems, but …

Superior stiffness is deemed essential for structures intended for several applications. The
stiffness enhancement can be achieved by adopting structures that deform based on the …

One particularly interesting class of mechanical metamaterials are those having a negative
Poisson's ratio, which are referred to as 'auxetics'. Because of their geometrical complexity …

In this study, a 3D re-entrant anti-trichiral honeycomb (RATH) structure with the combination
of various deformation mechanisms was proposed and formed through SLM additive …

This paper investigated the quasi-static and dynamic behavior of 3D auxetic metamaterial
structures made from carbon fiber reinforced polymer (CFRP) laminated composite. The aim …

Re-entrant circular (REC) auxetic metamaterials have garnered significant attention in
structural engineering due to their enhanced energy absorption capability and reduced …

Purpose Natural elements in the biological organs of plants and animals consist of repetitive
geometries, which often form the basis for the new lattice structure design with improved …

In the present work, arc-shaped, thin-strut-based structures were developed by taking
inspiration from the cup shaped Helleborus petticoat flower and fish scale pattern. The …