Additively manufactured locally resonant interpenetrating lattice structure
| DWPI Title: Acoustic resonant structure for attenuating acoustic waves, has resonating struts that are configured to attenuate acoustic waves within predetermined range of frequencies while allowing acoustic waves outside predetermined range |
| Abstract: A method and apparatus for attenuating acoustic waves is provided. A lattice is formed with a plurality of support struts. A plurality of resonating struts are formed extending between the support struts, wherein the resonating struts are configured to attenuate acoustic waves within a predetermined range of frequencies while allowing acoustic waves outside the predetermined range of frequencies to pass through the resonant structure unattenuated. The resonant structure is interposed between two bodies to isolate one body from acoustic waves from the other body over the predetermined range of frequencies. |
| Use: Acoustic resonant structure for use in an acoustic attenuation apparatus for isolating sensitive components from particular frequencies. Uses include but are not limited to accelerometers and data recorders. |
| Advantage: The resonant structure is interposed between two bodies to isolate one body from acoustic waves from the other body over the predetermined range of frequencies. The dynamic qualities of resonant structures are used to acoustically isolate sensitive components from particular frequencies. |
| Novelty: The structure (100) has a lattice with a set of support struts (110,120). A set of resonating struts extends between the set of struts, where the struts are configured to attenuate acoustic waves within a preset range of frequencies while allowing acoustic waves outside the preset range to pass through the structure unattenuated. The struts have a resonating disc (130) and the frequencies of acoustic waves are determined according to number, mass density, and stiffness of the resonating strut. The mass density of one of the strut is different from that of the other strut, where all components are made from a single material. |
| Filed: 11/30/2018 |
| Application Number: US16206722A |
| Tech ID: SD 14728.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Data from Derwent World Patents Index, provided by Clarivate All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |