Available Coefficient of Friction Associated with Different Slip Probabilities for Level Walking

نویسندگان

  • Wen-Ruey Chang
  • Simon Matz
  • Chien-Chi Chang
چکیده

Different slip probabilities for level straight walking were investigated when comparing a given available coefficient of friction (ACOF) value with the stochastic distribution of the required coefficient of friction (RCOF). The RCOF of each foot for each walking condition by each participant was assumed to have a normal distribution. The slip probability was calculated 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 showed that both age group and walking speed had a statistically significant effect on the ACOF associated with all slip probabilities evaluated. The ACOF value obtained in an earlier study was less than that with the current study for higher slip probabilities, and greater for lower slip probabilities.

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تاریخ انتشار 2013