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Prediction Technique for Gear Noise Transfer in Engine Mounting Systems

Article of Honda R&D Technical Review Vol.13 No.1

Summary

Prediction methods using finite element method (FEM) analysis were investigated to construct technology for predicting the aggravation of gear noise and other high frequency vibrations due to engine mount transfer in the initial development stages. Engine mounts are normally comprised of rubber clasped between metal brackets on the power plant and chassis sides. Coupled vibration including these metal parts is a problem for high frequency vibration transfer. This study showed the mount vibration transfer characteristics are a composite of the response characteristics of each metal part, and that simple evaluation by the response level can be used to predict the aggravation of noise in the cabin. In addition, modeling the chassis frame and case to which the metal fittings are joined, and modeling the clamping rigidity of the joints using spring elements, made it possible to accurately calculate the frequency response (error of resonance frequency: approximately 5%).

Reference

(1) Kihatirou Tanaka, Shouzou Saegusa: Vibration Models and Simulations, Tokyo, Applied Technology Publishing, 1984, p.281-289
(2) Akira Yamamoto: Screw Clamping Theory and Calculations, Tokyo, Youkendou, 1970, p.55-65

Author (organization or company)

Kazuomi KIKU(Tochigi R&D Center)、Akiko SEKINE(Tochigi R&D Center)、Masayuki RYOUKATA(Tochigi R&D Center)

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