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http://dx.doi.org/10.7782/JKSR.2015.18.3.194

Ride Quality Analysis Using Seated Human Vibration Modeling  

Kang, Ju Seok (Uiwang Campus)
Publication Information
Journal of the Korean Society for Railway / v.18, no.3, 2015 , pp. 194-202 More about this Journal
Abstract
In this paper, dynamic modeling with viscoelastic properties of a human body resting on a seat is presented to quantitatively analyze ride quality of passengers exposed to vertical vibrations. In describing the motions of a seated body, a 5 degree-of-freedom multibody model from the literature is investigated. The viscoelastic characteristics of seats used in railway vehicles are mathematically formulated with nonlinear stiffness characteristics and convolution integrals representing time delay terms. Transfer functions for the floor input are investigated and it is found that these are different in accordance with the input magnitude due to nonlinear characteristics of the seat. Measured floor input at the railway vehicle is used to analyze realistic human vibration characteristics. Frequency weighted RMS acceleration values are calculated and the effects of the seat design parameters on the frequency weighted RMS acceleration values are presented.
Keywords
Human body; Seat; Viscoelastic property; Ride quality; Human vibration characteristics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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