HYBRID AUXETIC STRUCTURE OF "PITS AND PORES" TYPE WITH CONFIGURATION DESIGNED TO PROVIDE GIVEN BEHAVIOR WITH NEGATIVE POISSON COEFFICIENT Russian patent published in 2019 - IPC B32B3/10 B32B15/01 F23R3/02 

FIELD: laminated products or materials.

SUBSTANCE: invention relates to porous materials and cellular solid bodies with given anisotropic Poisson coefficients. There are disclosed auxetic structures, low-porous auxetic sheets, systems and devices with auxetic structures, as well as methods of using and methods of making auxetic structures. Disclosed is an auxetic structure comprising a resilient solid body with a plurality of openings passing through the resilient solid body and a plurality of projections extending from the elastic solid body. Holes and protrusions are arranged in a developed layout, such as a matrix of rows and columns. Holes are configured together with the projections so that to provide the specified porosity while ensuring reduction of voltage by means of behaviour with a negative Poisson ratio (NPR) under conditions of macroscopic flat loading. In some forms of the invention realization protrusions, which are elliptic or hemispherical pits, are located in square or hexagonal structures with holes, which are S-shaped slots or holes of round section.

EFFECT: invention provides creation of auxetic structures with developed location diagrams, which demonstrate behaviour with a negative Poisson coefficient.

63 cl, 10 dwg