Minimal Surface-Based Materials for Topological Elastic Wave Guiding

Yuning Guo; Matheus Inguaggiato Nora Rosa; Mohit GuptaBenjamin Emerson DolanBrandon FieldsLorenzo ValdevitMassimo Ruzzene

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Minimal Surface-Based Materials for Topological Elastic Wave Guiding

机译：Minimal Surface-Based Materials for Topological Elastic Wave Guiding

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Materials based on minimal surface geometries have shown superiorstrength and stiffness at low densities, which makes them promisingcontinuous-based material platforms for a variety of engineering applications.In this work, it is demonstrated how these mechanical properties can becomplemented by dynamic functionalities resulting from robust topologicalguiding of elastic waves at interfaces that are incorporated into the consideredmaterial platforms. Starting from the definition of Schwarz P minimalsurface, geometric parametrizations are introduced that break spatial symmetryby forming 1D dimerized and 2D hexagonal minimal surface-basedmaterials. Breaking of spatial symmetries produces topologically non-trivialinterfaces that support the localization of vibrational modes and the robustpropagation of elastic waves along pre-defined paths. These dynamic propertiesare predicted through numerical simulations and are illustrated byperforming vibration and wave propagation experiments on additively manufacturedsamples. The introduction of symmetry-breaking topological interfacesthrough parametrizations that modify the geometry of periodic minimalsurfaces suggests a new strategy to supplement the load-bearing propertiesof this class of materials with novel dynamic functionalities.

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《Advanced functional materials》 |2022年第30期|2204122.1-2204122.10|共10页
作者
Yuning Guo; Matheus Inguaggiato Nora Rosa; Mohit GuptaBenjamin Emerson DolanBrandon FieldsLorenzo ValdevitMassimo Ruzzene;
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作者单位

P. M. Rady Department of Mechanical EngineeringUniversity of Colorado BoulderBoulder, CO 80309, USA;

Institute for Design and Manufacturing InnovationUniversity of California IrvineIrvine, CA 92697, USA;

Materials Science and Engineering DepartmentUniversity of California IrvineIrvine, CA 92697, USAInstitute for Design and Manufacturing InnovationUniversity of California IrvineIrvine, CA 92697, USA,Materials Science and Engineering DepartmentUniversity of California IrvineIrvine, CA 92697, USA,Mechanical and Aerospace Engineering DepartmentUniversit;

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正文语种英语
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dimerized parameterization; elastic metamaterials; minimal surfaces; topological modes; valley states;

Minimal Surface-Based Materials for Topological Elastic Wave Guiding

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