WebDec 27, 2013 · Besides the theoretical analysis, we experimentally demonstrate that the proposed structure can be easily fabricated using a single metallic material, and show that a fabricated sample can realize a complete band gap at very low audible frequencies (<1000 Hz) with a reasonable lattice size (5 cm). WebMar 16, 2024 · The concept of phononic crystal (PnCs) provides a new idea for the vibration controls in plate structures. Due to the periodic distributions of materials in PnCs, the elastic wave propagation can be prohibited in specific frequency ranges, which are defined to be elastic wave band gaps [ 6, 7 ].
Experimental and Theoretical Evidence for the Existence of …
WebJun 26, 2014 · We study both theoretically and experimentally the interaction of surface elastic waves with 2D surface phononic crystal (PnC) on a piezoelectric substrate. A … WebNov 1, 2024 · Based on a 2D phononic crystal of the honeycomb structure [ 23 ], the band structure was calculated with the plane wave expansion (PWE) method. They got the results which revealed that the crystals exist low-frequency band gap, the frequency range of the first compete band gap is accordance with the theoretical calculation. flowlock hvl
Finite element analysis and experimental study of surface …
WebApr 14, 2014 · Abstract We present the fabrication and characterization of an artificial crystal structure formed from a thin film of silicon that has a full phononic band gap for microwave X -band phonons and a two-dimensional … WebJul 12, 2024 · In this study, a new type of 2D piezoelectric phononic crystal with a square hollow and convex structures is designed and established. A theoretical study of the … WebMar 22, 2024 · Intended for the vibration and noise control problems faced by many engineering fields, a fresh variety of phononic crystal beam structure was constructed by attaching a one-dimensional periodic multilayer cylinder to a double-layer beam structure. Utilizing the finite element method and the Bloch theorem, the vibration modes of the … flowlock liu