Abstract

Pulse feeling is an important factor of ride comfort for V-twin engine, American-type motorcycles. Depending on sensory evaluation, the pulse feeling varies widely among estimators. Therefore, it takes much time to determine specifications. To solve this problem, a quantitative evaluation method was developed. In the development process, sensory evaluation testing for Japanese and American riders was conducted to verify how they feel the pulse. There was no significant difference between both riders. Both riders felt that the seat vibration made the largest contribution to the pulse feeling. In order to quantify the seat vibration pulse, a pulse intensity indicator was added to the previous sensual vibration indicator. Furthermore, time domain response analysis was applied to a complete motorcycle analysis model. The output showed good correlation with the actual data. The pulse feeling indicator was obtained from the analysis results. Consequently, the established method has allowed early prediction of the pulse intensity at design stage.

References

1. (1) ISO2631-1 Mechanical vibration and shock – Evaluation of human exposure to whole-body vibration – Part 1: General requirements (1997)
2. (2) Miwa, T.: Evaluation method for vibration effect, The National Institute of Industrial Health (1962)
3. (3) ISO13090-1 Mechanical vibration and shock – Guidance on safety aspects of tests and experiments with people – Part 1: Exposure to whole-body mechanical vibration and repeated shock (1998)
4. (4) Kuwahara, H., et al.: Virtual assessment of motorcycle vibrations, SETC 2001-01-1849
5. (5) Yamazaki, K., et al.: The development of a method for modeling ADAMS flexible body using residual vectors, MSC Software Solution Forum 2000

Author (organization or company)

• Kunihiro OSADA（Asaka R&D Center）
• Ryuta NIIMURA（Asaka R&D Center）
• Keikichi SHIMOKOBE（Asaka R&D Center）
• Goro YAMASAKI（Asaka R&D Center）

Publication Information

Article of Honda R&D Technical Review Vol.16 No.2 (217 - 224)

PDF

Citation Information