@article {Liu:2018:0736-2935:3190,
title = "A Study of the Frequency and Shape Dependency of Acoustic Radiation Modes",
journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings",
parent_itemid = "infobike://ince/incecp",
publishercode ="ince",
year = "2018",
volume = "258",
number = "4",
publication date ="2018-12-18T00:00:00",
pages = "3190-3197",
itemtype = "ARTICLE",
issn = "0736-2935",
url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/2018/00000258/00000004/art00023",
author = "Liu, Jiawei and Liu, Yangfan and Bolton, J. Stuart",
abstract = "Acoustic radiation modes (ARMs) are a set of orthogonal velocity distributions which radiate sound power independently. Because of this characteristic, ARMs has been successfully used in active structural acoustics control. More recently, ARMs have been used to guide structural modification
targeting sound power reduction, and have also been used as basis functions in acoustical holography. However, it is usually a time-consuming process to compute the ARMs of a radiating structure since they are frequency dependent. This characteristic often limits the use of ARMs in the applications
mentioned above. Here, the possibility of obtaining a set of ARMs that vary slowly with frequency by performing ARM calculations on a smoothed radiating surface was investigated. Specifically, in the current work, the surface smoothing effect on the frequency dependence of the radiation mode
shapes was studied. An understanding of this property will be beneficial, for example, by improving the accuracy of ARM-based acoustic holography, by facilitating more effective structural modification to reduce or improve sound radiation over a broader frequency range, and by reducing the
computation effort required in active noise control applications.",
}