The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2026
Filed:
Jul. 07, 2020
Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US);
Ercan Mehmet Dede, Ann Arbor, MI (US);
Yuqing Zhou, Ann Arbor, MI (US);
Tsuyoshi Nomura, Novi, MI (US);
Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US);
Abstract
Elastic metamaterial designs are provided, such as an acoustic radiator or sound partition, with non-spherical shapes or apertures defined in unit cells of an elastic medium. A method for making the same includes determining a set of boundary conditions for a plurality of non-spherical shapes/apertures defined in the elastic medium, and using a gradient-based algorithm to optimize a porous media model domain for the elastic medium, where porosity is related to size dimensions of the non-spherical shape/aperture and an anisotropic elastic modulus is related to an angle of orientation of the non-spherical shape/aperture. The method may include optimizing an objective function, and obtaining a grayscale design that relates to the porosity and the anisotropic elastic modulus. Reaction diffusion equations may be used with the grayscale design to obtain a pattern for the non-spherical shapes/apertures. Methods of manufacturing may include multi-material additive manufacturing techniques.