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US 2018/0009257 A1Published application
Zero-Porosity NPR Structure And Tuning Of NPR Structure For Particular Localities
AssigneesPresident and Fellows of Harvard College, Siemens Canada Limited
InventorsKatia Bertoldi, Fabian Enrique Sanchez Guerrero, Matthew Christopher Innes, Farhad Javid, Minh Quan Pham, Megan Schaenzer, SR., Ali Shanian, Evelyne Smith-Roberge
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Abstract
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.
Claims21
1-31. (canceled)
A zero-porosity structure comprising:
- a zero-porosity material comprising a plurality of structural elements arranged to provide a negative Poisson's ratio.
A zero-porosity structure comprising:
- a first material portion comprising a first tiling of a first plurality of structural elements, and
- a second material portion comprising a second tiling of a second plurality of structural elements,
- wherein the first tiling is different from the second tiling, and
- wherein at least one of the first material portion or the second material portion provides, responsive to the respective tiling configuration, at least one of a predetermined local negative Poisson's ratio or a predetermined global negative Poisson's ratio.
1 more element
A method for constructing a zero-porosity structure comprising the acts of:
- establishing design constraints for the zero-porosity structure,
- determining, within the design constraints, at least one tiling pattern bearing a plurality of structural elements having one or more shapes that provide, in the aggregate a resultant negative Poisson's ratio for the structure, and
- constructing the zero-porosity structure consistent with the act of determining.
Dependencies are inferred from the claim text.