Examination of acoustic insulation of composite metamaterials with negative stiffness elements inclusions

Ampatzidis, Theofanis; Chronopoulos, Dimitrios

Abstract

Damping is one of the most important properties of materials, being responsible for increased durability and conmfort of the structures. In this paper the damping enhancement of materials with internal oscillators is examined. Wave Finite Element (WFE) method is used to get the wave propagation of an two-dimensional layered mechanical material having embedded nonlinear internal oscillators acting as negative stiffness element. The acoustic properties of the panel are studied in a Statistical Energy Analysis (SEA) scheme.

Citation

Ampatzidis, T., & Chronopoulos, D. Examination of acoustic insulation of composite metamaterials with negative stiffness elements inclusions. Presented at 24th International Conference on Sound and Vibration

• Conference Name: 24th International Conference on Sound and Vibration
• End Date: Jul 27, 2017
• Acceptance Date: Apr 27, 2017
• Publication Date: Jul 23, 2017
• Deposit Date: Aug 22, 2017
• Publicly Available Date: Aug 22, 2017
• Peer Reviewed: Peer Reviewed
• Keywords: damping, metamaterials, negative stiffness, composites
• Public URL: https://nottingham-repository.worktribe.com/output/873735
• Publisher URL: https://www.iiav.org/archives_icsv_last/2017_icsv24/content/papers/papers/full_paper_283_20170130224056753.pdf
• Related Public URLs: https://iiav.org/icsv24/
• Contract Date: Aug 22, 2017