Honeycombs are ultra-light materials with outstanding mechanical properties, which mainly
originate from their unit cell configurations rather than the properties of matrix materials …

Metamaterials with negative Poisson's ratio (NPR) lattice structures have been of
considerable importance and interest in numerous engineering applications. A …

Auxetic materials could exhibit desirable mechanical properties, eg, fracture resistance,
shear resistance and energy dissipation due to their unique deformation characteristics …

Abstract Conventional two-dimensional (2D) re-entrant auxetic honeycomb is one of the
earliest examples of auxetic metamaterials. Recently, plenty of 2D re-entrant honeycomb …

Existing auxetic honeycomb meta-structures are generally integrated structures with
complicated microstructural geometry which hence should be fabricated by costly additive …

Missing rib auxetics with a reinforced central core may have tunable negative Poisson's
ratios (NPRs) and other mechanical parameters. In analogy with the other enhanced …

In order to improve the energy absorption capacity of the honeycomb, a combined auxetic
honeycomb is designed in this paper. By using the double-inclined walls replacing the …

In analogy with the enhanced hexa-missing rib structure, a novel enhanced anti-tetra-
missing rib structure was proposed in this work. Using a simple energy-based approach …

The design of metamaterials involves the optimal distribution of material inside a volume;
therefore, it has benefited from the development of Additive Manufacturing (AM) techniques …

Metamaterials possess superior acoustic, thermal, and mechanical properties, making them
potential candidates for scientific and engineering applications. Previous studies were …