Back to results
US 12,228,046 B2Granted
Auxetic three-dimensional structure utilized in additive manufacturing applications
AssigneeSiemens Energy Global GmbH & Co. KG
InventorsMitch Kibsey, Megan Schaenzer
Life of this patent
Estimating the term…
Abstract
An auxetic (NPR) structure includes a plurality of vertical intersecting dimpled sheets, each dimpled sheet exhibiting a negative Poisson's ratio, each dimpled sheet intersects two adjacent dimpled sheets creating a rectangular tubular structure, and having a portion of each dimpled sheet projecting outward from its intersection with an adjacent dimpled sheet, the amplitude of each dimple on the plurality of dimpled sheets is such that no overhanging surface of the dimpled sheet exceeds an angle threshold for printability without support structures.
Claims17
An auxetic (NPR) structure, comprising:
- a three-dimensional unit cell, the unit cell including a plurality of vertical intersecting dimpled sheets, each dimpled sheet exhibiting a negative Poisson's ratio,
- wherein each dimpled sheet is sinusoidally-shaped to define a saddle,
- wherein each dimpled sheet intersects two adjacent dimpled sheets at the saddle points of the sinusoidal waves to create a rectangular tubular structure, and wherein a portion of each dimpled sheet projects outward from its intersection with an adjacent dimpled sheet,
- wherein the amplitude of each dimple on the plurality of dimpled sheets is such that no overhanging surface of the dimpled sheet exceeds an angle threshold for three-dimensional printability of the auxetic (NPR) structure, wherein the auxetic (NPR) structure itself provides support to the forming layers of the auxetic (NPR) structure as the auxetic (NPR) structure is additively manufactured without involving an external support structure.
1 more element
Dependencies are inferred from the claim text.