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Vibration Analysis System for a Bicycle With a Rider and Two Infant Seats

[+] Author Affiliations
S. Ota, S. Nishiyama, T. Shinohara

Okayama Prefectural University, Souja-Shi, Okayama, Japan

Paper No. IMECE2014-36224, pp. V04BT04A068; 7 pages
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 4B: Dynamics, Vibration, and Control
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4648-3
  • Copyright © 2014 by ASME


This paper describes a vibration analysis system for a rider and two infants riding on a bicycle with two infant seats. To examine the vibrations of the rider and infants, a vibration model and a simulation system were designed for this bicycle–rider–infant system. The vibration characteristics in the analytical results were compared with the experimentally measured results. The effects of the vibrations on the occupants owing to the altered centroid of the bicycle were investigated. This investigation indicated that the analytical results corresponded with the measurement results for the occupants. When the centroid of the bicycle was moved forward, the root mean square (RMS) acceleration values for the front infant increased, whereas the maximum acceleration values decreased. In contrast, both the RMS and maximum values of acceleration for the rear infant increased when the centroid of the bicycle was moved forward. However, both the RMS and maximum values of acceleration for the rider increased when the centroid of the bicycle was moved backward. On the basis of these results, a relationship between the centroid of the bicycle and the transient response of the occupants was found by using the proposed vibration analysis system.

Copyright © 2014 by ASME



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