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Development of Trimmed Body Model for Noise and Vibration

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

Summary

Modeling Technology for a trimmed body that can predict noise and vibration with short computation time and high accuracy was developed. In order to reduce the total degrees of freedom, parts that exert only a small influence on the acoustic characteristics were simplified from shell elements to concentrated mass models. The acoustic significance of trim parts was determined both experimentally and computationally. Also, Automated Multi-Level Substructuring (AMLS) was applied resulting in significant reduction in computation time. Finally, the trimmed body prediction results agreed closely with experimental data.

Reference

(1) Kimura, F., Shimizu, H.: Parametric studies on correlation with experiments, Digital Engineering, p. 25, (2002) (in Japanese)
(2) Society of Automotive Engineers: Jidoushagijutu Handobukku Kiso Riron Hen, p. 247 (1991) (in Japanese)
(3) Bennighof, J.K., Kaplan,M.F., Muller,M.B.: Extending the frequency response capabilities of automated multilevel substructuring, SDM Paper AIAA-2000-1574
(4) Nagamatsu, A.: Constrained Mode Synthesis, substructure synthesis, p. 103-104 (1991) (in Japanese)
(5) Heiserer, D., Sielaff, J., Chargin, M.: High performance, process oriented, weld spot approach, 1st MSC Worldwide Automotive User Conference, (1999)

Author (organization or company)

Nobuo AIZAWA(Tochigi R&D Center)、Fumihiko IDE(Tochigi R&D Center)、Yasuhiko KAGIYAMA(Tochigi R&D Center)

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