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Study of Evaluation Method for Knee-grip Feeling of Motorcycles

Article of Honda R&D Technical Review Vol.24 No.1

Summary

Simulation technology is demanded that enables quantitative and unified evaluation of the knee-grip feeling of motorcycles in a short time. This study used a computer mannequin, which can simulate various rider physiques, and ergonomic techniques to derive the appropriate relative positions of the foot peg and knee contact area that enable riders to exert sufficient gripping force. In addition, the knee-grip status was reproduced using simulations, and the relationship with the subjective rating was investigated. This enabled establishing of evaluation parameters that express the feeling of discomfort during knee gripping and threshold values, and deriving of a predictive formula. As a result, it became computationally possible to estimate the feeling of thigh discomfort with an accuracy of 93%.

Reference

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(2) Yoshikawa, S., Kato, I.: Mechanical characteristics of human body surface and its measurement method, Ningenkogaku, Vol. 11, No. 1, p. 23-28 (1975)
(3) Yonemoto, K.: Anthropometry for car design, Ningenkogaku, Vol. 6, No. 1, p. 15-18 (1970)
(4) Research institute of human engineering for quality life: Japanese body size data book 2004-2006
(5) Open Ergonomics Ltd.: ADULTDATA
(6) Ishikawa, K., Onuma, G., Usuzumi, T., Tokunaga, K., Nakashima, M.: Santeiban Seni, Tokyo Denki Daigaku Shuppankyoku (1969) (in Japanese)
(7) Murayama, M., Nosaka, K., Yoneda, T., Minamitani, K.: Change in hardness of the human elbow flexor muscles after eccentric exercise, Eur J Appl Physiol, Vol. 82, p. 361-367 (2000)

Author (organization or company)

Kobue IWATA(Motorcycle R&D Center)、Koki KUDO(Motorcycle R&D Center)

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