Effect of Step Length and Walking Speed on Traction Coefficient and Slip between Shoe Sole and Walkway
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概要
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The effect of gait parameters such as step length and walking speed on the traction coefficient and the slip between a shoe sole and a walkway was clarified experimentally, and desirable gait to reduce the chance of slipping was also suggested. The maximum peak value of traction coefficient obtained at heel-strike period |<I>F</I>h/<I>F</I>n|h and that at toe-off period |<I>F</I>h/<I>F</I>n|t increased with an increase of step length irrespective of subjects when walking on dry walkway. Meanwhile, |<I>F</I>h/<I>F</I>n|h or |<I>F</I>h/<I>F</I>n|t slightly decreased or took almost constant value with respect to walking speed. Based on the results of gait experiments on glycerin-lubricated walkway, it was clarified that a walk with a shorter step length and a higher walking speed was effective for prevention of slip irrespective of subjects, and such a gait provided a shorter slip distance. The reason why the smaller maximum peak values of traction coefficient can be obtained in case of walking with a shorter step length and a higher walking speed was discussed based on the kinematic analysis using the body center of mass (COM) and center of pressure of shoe sole (COP).
- 社団法人 日本トライボロジー学会の論文
社団法人 日本トライボロジー学会 | 論文
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