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Research for Vibration Analysis with Full-Vehicle Model

Article of Honda R&D Technical Review Vol.14 No.1

Summary

Techniques of full vehicle analysis directed at all suspension and body-related parts were combined with test-based engineering and simulation techniques in a two-sided approach intended to develop a technology for reduction of floor and steering vibration. The test-based engineering clarified the mechanism of vibration initiation by means of full vehicle modal analysis, operational deflection shape analysis, and transfer path analysis implemented by excitation of the suspension.
Modifications were then made to an actual car based on the results obtained from analysis. The simulation techniques involved modeling of all the subject parts, and the creation of a finite element model (160,000 nodes) that matched the actual car with a high degree of accuracy. Sensitivity analysis was then applied to analyze the weak points, and calculations were made to implement modifications in the finite element model. Both the test-based engineering and the simulation techniques were confirmed to reduce vibration levels in the actual car, thus substantiating the validity of these analytical techniques.

Author (organization or company)

Toshiya YOKOI(Tochigi R&D Center)、Kengo OKAMURA(Tochigi R&D Center)、Jiro NINOMIYA(Tochigi R&D Center)、Masaki NAGAHISA(Tochigi R&D Center)

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