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The available coefficient of friction associated with different slip probabilities for level straight walking

机译：水平直行时与不同滑移概率相关的可用摩擦系数

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摘要

This paper presents an investigation on different slip probabilities for level straight walking obtained when comparing a given available coefficient of friction (ACOF) value with the stochastic distribution of the required coefficient of friction (RCOF). In an early study, data from both feet of 48 participants were pooled to construct a normal distribution for the RCOF without considering the potential effects of different factors such as the walking speed, footwear type, age, gender and foot. In the current study, the RCOF of each foot for each walking condition by each participant was assumed to have a normal distribution. The slip probability was obtained by averaging the cumulative probabilities of the RCOF exceeding a given ACOF from both feet and evaluated at five levels, one out of 20, 200, 10,000, 100,000 and 1,000,000. The ANOVA results indicated that age group and walking speed had a statistically significant effect on the ACOF associated with all slip probabilities evaluated. The ACOF value obtained in that early study was lower than that with the current study for higher slip probabilities, while the opposite was true for lower slip probabilities.
机译：当比较给定的可用摩擦系数（ACOF）值与所需摩擦系数（RCOF）的随机分布时，本文针对水平直线行走的不同滑移概率进行了研究。在一项早期研究中，将来自48位参与者的双脚的数据汇总起来，以构建RCOF的正态分布，而没有考虑步行速度，鞋类，年龄，性别和脚等不同因素的潜在影响。在当前的研究中，假设每个参与者的每种步行条件下每只脚的RCOF具有正态分布。滑移概率是通过平均双脚超过给定ACOF的RCOF的累积概率求得的，并在5个级别（20、200、10,000、100,000和1,000,000中之一）进行评估。方差分析结果表明，年龄组和步行速度对与所有评估的滑倒概率相关的ACOF具有统计学显着影响。在早期研究中获得的ACOF值低于当前研究中的较高滑动概率值，而对于较低滑动率则相反。

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