Kinematic and tribological analysis of slip phenomena during walking

Takeshi Yamaguchi; Shintaro Hatanaka; Kazuo Hokkirigawa

Kinematic and tribological analysis of slip phenomena during walking

Takeshi Yamaguchi, Shintaro Hatanaka, Kazuo Hokkirigawa

ENG - Finemechanics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this investigation, the effect of step length, walking speed and subject on traction coefficient between a shoe sole and floor was clarified and desirable walking conditions for reducing the chance of slipping were also suggested. From the gait experiments, a walk with shorter step length and higher walking speed is effective to reduce the chance of slipping irrespective of subjects. Based on a kinematic analysis of COM and COP during walking, the peak value of traction coefficient at heel-strike period |F _h/F _n| _h or that at toe-off period |F _h/F _n| _t on dry walkway increases with an increase of tan|θ _h| or tan|θ _t|. θ _h or θ _t is an angle between vertical line through COM and the line connecting COM and COP at the moment when traction coefficient takes peak value at heel-strike or toe-off period. These results indicate that a walk with smaller θ _h and θ _t is effective for prevention of slip during walking.

Original language	English
Title of host publication	Contemporary Ergonomics 2008
Pages	644-650
Number of pages	7
Publication status	Published - 2008 Dec 1
Event	Annual Conference of the Ergonomics Society on Contemporary Ergonomics 2008 - Nottingham, United Kingdom Duration: 2008 Apr 1 → 2008 Apr 3

Other

Other	Annual Conference of the Ergonomics Society on Contemporary Ergonomics 2008
Country	United Kingdom
City	Nottingham
Period	08/4/1 → 08/4/3

ASJC Scopus subject areas

Human Factors and Ergonomics

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Yamaguchi, T., Hatanaka, S., & Hokkirigawa, K. (2008). Kinematic and tribological analysis of slip phenomena during walking. In Contemporary Ergonomics 2008 (pp. 644-650)

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abstract = "In this investigation, the effect of step length, walking speed and subject on traction coefficient between a shoe sole and floor was clarified and desirable walking conditions for reducing the chance of slipping were also suggested. From the gait experiments, a walk with shorter step length and higher walking speed is effective to reduce the chance of slipping irrespective of subjects. Based on a kinematic analysis of COM and COP during walking, the peak value of traction coefficient at heel-strike period |F h/F n| h or that at toe-off period |F h/F n| t on dry walkway increases with an increase of tan|θ h| or tan|θ t|. θ h or θ t is an angle between vertical line through COM and the line connecting COM and COP at the moment when traction coefficient takes peak value at heel-strike or toe-off period. These results indicate that a walk with smaller θ h and θ t is effective for prevention of slip during walking.",

author = "Takeshi Yamaguchi and Shintaro Hatanaka and Kazuo Hokkirigawa",

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AU - Hatanaka, Shintaro

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N2 - In this investigation, the effect of step length, walking speed and subject on traction coefficient between a shoe sole and floor was clarified and desirable walking conditions for reducing the chance of slipping were also suggested. From the gait experiments, a walk with shorter step length and higher walking speed is effective to reduce the chance of slipping irrespective of subjects. Based on a kinematic analysis of COM and COP during walking, the peak value of traction coefficient at heel-strike period |F h/F n| h or that at toe-off period |F h/F n| t on dry walkway increases with an increase of tan|θ h| or tan|θ t|. θ h or θ t is an angle between vertical line through COM and the line connecting COM and COP at the moment when traction coefficient takes peak value at heel-strike or toe-off period. These results indicate that a walk with smaller θ h and θ t is effective for prevention of slip during walking.

AB - In this investigation, the effect of step length, walking speed and subject on traction coefficient between a shoe sole and floor was clarified and desirable walking conditions for reducing the chance of slipping were also suggested. From the gait experiments, a walk with shorter step length and higher walking speed is effective to reduce the chance of slipping irrespective of subjects. Based on a kinematic analysis of COM and COP during walking, the peak value of traction coefficient at heel-strike period |F h/F n| h or that at toe-off period |F h/F n| t on dry walkway increases with an increase of tan|θ h| or tan|θ t|. θ h or θ t is an angle between vertical line through COM and the line connecting COM and COP at the moment when traction coefficient takes peak value at heel-strike or toe-off period. These results indicate that a walk with smaller θ h and θ t is effective for prevention of slip during walking.

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