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Characterization of Noise and Vibration of Passenger Seats Using a Poroelastic Element (Second Report)
Technical Paper
2010-08-0006
Sector:
Event:
JSAE Spring Conference
Language:
Japanese
Abstract
In the measurement results reported in our first paper, it was shown that the seats made of an elastic frame covered with polyurethane foam have both the structural and the acoustical characteristics. In this paper a modeling method of the seats is proposed applying the Biot theory to model the polyurethane foam. In this method a sub-structuring technique is utilized to cope with the frequency dependence of the physical properties inherent in poroelastic media such as polyurethane foam. It is demonstrated that the results calculated by the method can fully describe the measured characteristics.