3D acoustic metamaterial-based mechanical metalattice structures for low-frequency and broadband vibration attenuation

• Published in: International journal of solids and structures Vol. 191-192; pp. 293 - 306
• Main Authors: An, Xiyue, Lai, Changliang, Fan, Hualin, Zhang, Chuanzeng
• Format: Journal Article
• Language: English
• Published: New York Elsevier Ltd 15.05.2020; Elsevier BV
• Subjects: 3D AM-based lattice structures; Acoustic absorption; Acoustic attenuation; Acoustic resonance; Acoustics; Body centered cubic lattice; Broadband; Composite AM-based lattice structures; Elastic waves; Energy gap; Lattice trusses; Lattice vibration; Low-frequency bandgaps; Mechanical properties; Metamaterials; Struts; Unit cell; Vibration control; 3D AM-based lattice structures; Low-frequency bandgaps; Metamaterials; Composite AM-based lattice structures

In this paper, a new type of three-dimensional (3D) truss-lattice structures for low-frequency and broadband elastic wave absorption is proposed. The local resonance mechanism used in acoustic/elastic metamaterials (AMs) for generating low-frequency bandgaps, in which elastic waves cannot pass throu...