Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Elastic Metamaterials"”.
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Design of elastic metamaterials
… negativity and three broadband single negativity elastic metamaterials using a 3D printer. We investigated dispersion curves and dynamic material properties of the metamaterials. Negative phase velocity in the double negativity metamaterial was also demonstrated.</p> <p>For metamaterials with …
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Lattice Based Elastic Metamaterials with Ultra-wide Stopbands at Low Frequency
Lattice-based elastic metamaterials (EMMs) with periodically engineered cells exhibit unprecedented properties. One exotic attribute of EMMs is the bandgap, in which elastic waves， within specific frequency ranges are prohibited from transmitting. While putting EMMs into use in real-life …
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Frequency Dependent Mechanical Properties of Elastic Metamaterials with Locally Resonant Microstructures
Frequency dependent mechanical properties of elastic metamaterials with locally resonant microstructures were investigated. Due to the dynamic behavior of the microstructures, the mechanical properties of these elastic metamaterials, if represented by effective continuous media, would exhibit …
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Tunable mechanical bandgaps in elastic metamaterials: Patterning, straining, and spatiotemporal modulation
Metamaterials are novel engineered composites with special microstructural patterns that lead to uncommon macro properties compared to natural material systems. In this work, we first present a novel mechanism for evolving the elastic band gap structure in a bio-inspired composite through tension …
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Nonlinear Dynamics in Metamaterials under Elastic and Plastic Excitation and Spectral Submanifold Parameterization
… by researchers in many contexts, two of which, elastic-plastic wave propagation in metamaterials and nonlinear normal modes, are examined here. The first topic examined herein addresses the cross-section of plastic wave propagation and elastic metamaterials. Elastic metamaterials, media …
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Theoretical and Experimental Studies of Manipulation of Elastic Waves in Helix Metamaterials
Helix metamaterials; Wide low-frequency bandgap; Controllable design; Laser vibration measurement; Strong vibration attenuation; Carrera Unified Formulation Abstract Elastic metamaterials exhibit mechanical properties unattainable in natural materials and demonstrate vast potential in vibration and …
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Novel effects in light-actuated systems based on dispersed azobenzene dyes and azopolymers
… For example, we introduce light-responsive elastic metamaterials which could serve to steer elastic waves, a soft robotic arm which may eventually be guided towards the manipulation of objects, and a light-controlled particle flow system where propulsion channels can freely be drawn on …
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Analysis and Experimental Investigation of Wave Propagation and Energy Transfer in Mechanical Rotator Metamaterials
… in the field of periodic structures and acoustic/elastic metamaterials is dedicated to comprehending and manipulating the propagation of waves and energy transfer in engineered materials characterized by periodic arrangements of unit cells. This organized arrangement governs wave behavior, …