DEVELOPMENT OF A BICYCLE VIBRATION MODEL FOR ROAD SURFACE ROUGHNESS EVALUATION

In recent years, the demands for cycle tourism increases with increasing awareness of environmental protection and the healthy life. In promoting cycle tourism, the road surface condition for traveling is one of the important factors affecting the safety and comfort of cyclists. However, no evaluation index of surface roughness has been developed with respect to the ride quality for cyclists. This research develops a bicycle vibration model for evaluating road surface roughness in terms of bicycle ride quality. For this purpose, the authors estimate the frequency response function of a common bicycle by performing a vibration experiment using a vibrating table. In the experiment, two accelerometers were attached to the bicycle: one was to the handlebar and the other was to the wheel rim. The result shows that the bicycle has two distinctive resonance frequencies on 10 and 20 Hz corresponding to the handle and wheel rim respectively. Thus, the authors develop a bicycle vibration model based on a damped two degree-of-freedom system. Finally, the effectiveness of the model is verified in terms of vertical acceleration compared with the experimental result. The outcomes of this research contribute to the evaluation of surface roughness from the viewpoint of bicycle ride quality with the same idea to the International Roughness Index (IRI).

Language

  • English
  • Japanese

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Filing Info

  • Accession Number: 01696751
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jan 25 2019 3:31PM