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Establishment of Method for Analyzing Radiation Noise in Intake System

Article of Honda R&D Technical Review Vol.16 No.1

Summary

Radiation noise in an air cleaner is determined by acoustic excitation due to internal pressure and also by the structural resonance characteristics. A calculation method was developed for predicting radiation noise by acoustic and structural coupling calculation analysis, and also for designing the structure of the air cleaner to be as light as possible. This method was applied to the development of a new air cleaner. As a result, it was verified that the prediction accuracy of the radiation noise was within 300 Hz, which was adequate, and also it was possible to reduce the weight of the air cleaner by 12%, thus proving the effectiveness of this method.

Reference

(1) Amago. T.: Sizing Optimization Using Response Surface Method in FOA, R&D Review of Toyota CRDL, Vol. 37, No. 1, p. 31-36 (2002)
(2) Taguchi: Methods for planning experiments, 3rd ed. Vol. 1 (1976)
(3) M. Alex: Air Intake Development-Effects of Coupled Fluid/Structure Modes, SAE paper n. 20011919
(4) Mladen Chargin: Optimization of frequency response with β equations, www.cdh.co.jp/technical/beta.pdf

Author (organization or company)

Hideaki ITOH(Tochigi R&D Center)、Mototaka MAEDA(Tochigi R&D Center)、Fumihiko IDE(Tochigi R&D Center)、Jiro UEDA(CDH Japan Ltd.)

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