Optimizing the band gap of effective mass negativity in acoustic metamaterials
Abstract
A dual-resonator microstructure design is proposed for acoustic metamaterials to achieve broadband effective mass negativity. We demonstrate the advantage of acoustic wave attenuation over a wider frequency spectrum as compared to the narrow band gap of a single-resonator design. We explicitly confirm the effect of negative effective mass density by analysis of wave propagation using finite element simulations. Examples of practical application like vibration isolation and blast wave mitigation are presented and discussed.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 10, 2012
- Source ID
- 10.1063/1.4770370
Entities
People
- Chintech Sun
- H. H. Huang
- K. T. Tan
Organizations
- Air Force Office of Scientific Research
- Department of Engineering Science, University of Oxford
- Purdue University