Harvard College

Siemens Canada Limited

Jette, François-xavier

Carson, Carl, J.

Gillespie, Thomas, Harold

Farhangi, Mehran

Smith-roberge, Evelyne

Schaenzer, Megan

Booth-morrison, Christopher

Scarinci, Thomas

Guerrero, Fabian Enrique Sanchez

Gerendas, Miklos

Shanian, Ali

Pham, Minh Quan

Innes, Matthew, Christopher

Fabian Enrique Sanchez Guerrero

Miklos Gerendas

Katia Bertoldi

Ali Shanian

Megan Schaenzer

Farhad Javid

Minh Quan Pham

Matthew Christopher Innes

Christopher Booth-Morrison

François-Xavier Jette

Thomas Scarinci

François Jette

Evelyne Smith-Roberge

Thomas Harold Gillespie

Benoit Villien

Mehran Farhangi

Michael James Taylor

Carl J Carson

The present concepts include a zero-porosity structure having a plurality of structural elements arranged to provide a negative Poisson's ratio and, further, a new mechanism to generate negative Poisson's ratio is single material, zero-porosity structure.

Zero-porosity NPR structure and tuning of NPR structure for particular localities

Auxetic structures, low porosity auxetic sheets, systems and devices with auxetic structures, and methods of using and methods of making auxetic structures are disclosed. An auxetic structure is disclosed which includes an elastically rigid body with a plurality of apertures extending through the elastically rigid body and a plurality of protrusions projecting from the elastically rigid body. The apertures and protrusions are arranged in an engineered pattern, such as an array of rows and columns. The apertures are cooperatively configured with the protrusions to provide a predefined porosity while exhibiting stress reduction through negative Poisson's Ratio (NPR) behavior under macroscopic planar loading conditions. In some embodiments, the protrusions, which are elliptical or semispherical dimples, are interposed in square or hexagonal patterns with the apertures, which are S-shaped through slots or circular boreholes.

Hybrid dimple-and-void auxetic structures with engineered patterns for customized NPR behavior

Growing community of inventors

Montreal, Canada

Fabian Enrique Sanchez Guerrero