Design tool for realisable vibro-acoustic metamaterials based on their NVH performance

Vibro-acoustic metamaterials have shown to be an interesting candidate for improving the noise and vibration behaviour of lightweight systems. Recent studies have reported this new concept to significantly attenuate vibration or reduce acoustic transmission for targeted and tunable frequency ranges, referred to as stopbands. This effect can be obtained by adding a grid of resonant structures to a given host material. The resonant-based metamaterials can be applied to a wide range of designs and are producable by a variety of manufacturing process, making their design process a challenging and highly experience driven task. This paper discusses a design tool for metamaterials which evaluates their NVH performance for several combinations of designs and production processes. The proposed tool allows to obtain a metamaterial design based on its predicted NVH performance through the creation of solution spaces. These spaces are generated considering the main metamaterial performance indicators, such as stopband location and width, vibration attenuation and transmission loss.

ISBN:9789073802995

Jaar van publicatie:2018

BOF-keylabel:ja

IOF-keylabel:ja

Authors from:Government, Higher Education