1996-02-01

The Influence of Padding and Shoes on the Dynamic Response of Dummy Lower Extremities 961042

ABSTRACT

This work studies the effect of padding on the force levels in impulsively loaded dummy lower extremities. Tests include the effect of padding incorporated into the soles of shoes and an examination of the potential of shoe padding for mitigating impact loading on the lower extremities. Three different shoes and three paddings were studied using a pendulum impactor; two different padding levels were studied in an impact sled test with simulated translational structural intrusion. The tests indicate a greater than 20% variation in peak axial force imparted to the lower tibia between shoes, and a greater than 50% variation in peak axial force across the paddings tested. From sled tests with simulated structural intruaion, we see a decrease of approximately 15% in peak axial load and a decrease of over 20% in peak anterior/posterior moment. Results of this study include the quantification of the effect of shoe use versus no shoe use in laboratory investigations where shoe usage for various experiments, both within laboratories and across laboratories, is not uniform.

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