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research-article

Shoe-Floor Interactions in Human Walking with Slips: Modeling and Experiments

[+] Author and Article Information
Mitja Trkov

Dept. of Mechanical and Aerospace Eng. Rutgers University Piscataway, NJ 08854, USA
mitja.trkov@rutgers.edu

Jingang Yi

Dept. of Mechanical and Aerospace Eng. Rutgers University Piscataway, NJ 08854, USA
jgyi@rutgers.edu

Tao Liu

School of Mechanical Engineering Zhejiang University Hangzhou, Zhejiang 310027, China
liutao@zju.edu.cn

Kang Li

Department of Industrial and Systems Engineering Rutgers University Piscataway, NJ 08854, USA
kl419@rci.rutgers.edu

1Corresponding author.

ASME doi:10.1115/1.4038251 History: Received April 21, 2017; Revised September 04, 2017

Abstract

Shoe-floor interactions play a crucial role in determining the possibility of potential slip and fall during human walking. Biomechanical and tribological parameters influence the friction characteristics between the shoe sole and the floor and the existing work mainly focus on experimental studies. In this paper, we present modeling, analysis, and experiments to understand slip and force distributions between the shoe sole and floor surface during human walking. We present results for both soft and hard sole material. The computational approaches for slip and friction force distributions are presented using a spring-beam networks model. The model predictions match the experimentally observed sole deformations with large soft sole deformation at the beginning and the end stages of the stance, which indicates the increased risk for slip. The experiments confirm that the required coefficient of friction and the deformation measurements can be used to predict slip occurrence. Moreover, the deformation and force distribution results provide further understanding and knowledge of slip initiation and termination under various biomechanical conditions.

Copyright (c) 2017 by ASME
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