Variation of Poisson’s Ratio with Axial Strain for Three-Dimensional Reentrant Auxetic Structures

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

This study presents numerical investigations of the influence of structural parameters on the variation of the Poisson ratio with axial strain for auxetic structures. Three-dimensional reentrant structures were considered with variable strut thickness to length ratio and reentrance angles. The variation of the volume, relative density, and relative stiffness with axial strain was also studied.

Related collections

Most cited references 31

Record: found
Abstract: found
Article: not found

Ultralight, ultrastiff mechanical metamaterials.

Xiaoyu Zheng, Howon Lee, Todd Weisgraber … (2014)

The mechanical properties of ordinary materials degrade substantially with reduced density because their structural elements bend under applied load. We report a class of microarchitected materials that maintain a nearly constant stiffness per unit mass density, even at ultralow density. This performance derives from a network of nearly isotropic microscale unit cells with high structural connectivity and nanoscale features, whose structural members are designed to carry loads in tension or compression. Production of these microlattices, with polymers, metals, or ceramics as constituent materials, is made possible by projection microstereolithography (an additive micromanufacturing technique) combined with nanoscale coating and postprocessing. We found that these materials exhibit ultrastiff properties across more than three orders of magnitude in density, regardless of the constituent material.

0 comments Cited 469 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Foam Structures with a Negative Poisson's Ratio.

R Lakes (1987)

A novel foam structure is presented, which exhibits a negative Poisson's ratio. Such a material expands laterally when stretched, in contrast to ordinary materials.