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Virtual modelling of a prosthetic foot to improve footwear testing

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posted on 01.09.2014 by Gillian E. Mara, Andy Harland, Sean Mitchell
The footwear industry is continually producing more technically engineered shoes, therefore, it is necessary to improve existing laboratory footwear tests using simplistic rigid stamps to something more realistic. The aim of this article is to investigate the possibility of reverse engineering a standard commercially available component accurately enough to produce constructive results in a finite-element analysis (FEA). A prosthetic foot was chosen as it is commercially available and is more representative of a real foot. Information on its geometry and material properties were gathered using a non-destructive method. X-ray images and three-dimensional laser scanning were used to capture the dimensions of the internal and external geometries, whereas the vickers microhardness test and volume and mass calculations were used along with the Cambridge Engineering Selector software to identify material properties. To validate the finite-element prosthetic foot, a vertical heel compression and a forefoot flexibility laboratory test were conducted and mimicked in an FEA software package. Good and fair agreements were found in the two tests, respectively. It is concluded that a non-destructive approach to reverse engineer a standard component is an effective method of improving the realism of existing footwear tests both in reality and in finite-element situations.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS

Volume

220

Issue

L4

Pages

207 - 213 (7)

Citation

MARA, G.E., HARLAND, A.R. and MITCHELL, S.R., 2006. Virtual modelling of a prosthetic foot to improve footwear testing. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 220 (4), pp.207-213.

Publisher

Sage (© Institution of Mechanical Engineering)

Version

SMUR (Submitted Manuscript Under Review)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2006

ISSN

1464-4207

Language

en

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