English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

This study examines the mechanical behavior of a novel class of mechanicalmetamaterials alternating pentamode lattices and stiffening plates. The unitcell of such lattices consists of a sub-lattice of the face cubic-centered unitcell typically analyzed in the current literature on pentamode materials. Thestudied systems exhibit only three soft deformation modes in the infinitesimalstretch-dominated regime, as opposed to the five zero-energy modes ofunconfined pentamode lattices. We develop analytical formulae for the verticaland bending stiffness properties and study the dependence of such quantities onthe main design parameters: the lattice constant, the solid volume fraction,the cross-section area of the rods, and the layer thickness. A noteworthyresult is that the effective compression modulus of the analyzed structures isequal to two thirds of the Young modulus of the stiffest isotropic elasticnetworks currently available in the literature, being accompanied byzero-rigidity against infinitesimal shear and twisting mechanisms. The use ofthe proposed metamaterials as novel seismic-isolation devices andimpact-protection equipment is discussed by drawing comparisons with theresponse of alternative devices already available or under development.

Mechanical modeling of innovative metamaterials alternating pentamode lattices and confinement plates