@article {Lee:2020:0736-2935:5262,
title = "Wave-based analysis on cut-on frequency of curvilinear acoustic black holes",
journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings",
parent_itemid = "infobike://ince/incecp",
publishercode ="ince",
year = "2020",
volume = "261",
number = "1",
publication date ="2020-10-12T00:00:00",
pages = "5262-5266",
itemtype = "ARTICLE",
issn = "0736-2935",
url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/2020/00000261/00000001/art00033",
author = "Lee, Jae Yeon and jeon, Wonju",
abstract = "Recently, the curvilinear acoustic black hole (ABH), a structure whose thickness is tapered according to the power-law while the baseline is curved, was proposed and shown to be a compact solution to absorb elastic waves in thin structures by numerical and experimental studies. To design
a curvilinear ABH applicable to various industries, systematic investigations on the fundamentals such as the effect of curvature on the reflection coefficient and the cut-on frequency are required. In this study, we use the impedance method for curvilinear ABHs to investigate the effects
of the baseline curvature on the reflection coefficient and the cut-on frequency of arc ABHs. We show that the cut-on frequency of an arc ABH increases linearly proportional to the baseline curvature.",
}