Pre-stresses due to trans-tibial socket donning: a nonlinear finite element analysis with contact

Author

Zachariah, S.G. ; Sanders, J.E.

Author_Institution

Center for Bioeng., Washington Univ., Seattle, WA, USA

Volume

1

fYear

1999

fDate

1999

Abstract

A finite element (FE) model of the trans-tibial residual limb and prosthetic socket was developed. The three-dimensional model accounts for shape differences between the socket and residual limb, and incorporates material nonlinearities. Contact, frictional slip, and separation at the limb-socket interface were permitted using automated contact without gap elements. FE estimates of interface stresses after socket donning compared favorably with experimental measurements, suggesting that the model may potentially contribute to improved understanding of interface biomechanics

Keywords

artificial limbs; biomechanics; finite element analysis; friction; mechanical contact; slip; automated contact; frictional slip; gap elements; interface biomechanics; interface stresses; limb-socket interface separation; material nonlinearities; shape differences; three-dimensional model; Biological materials; Biological tissues; Finite element methods; Prosthetics; Residual stresses; Shape; Sockets; Solid modeling; Stress measurement; Tendons;

fLanguage

English

Publisher

ieee

Conference_Titel

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint

Conference_Location

Atlanta, GA

ISSN

1094-687X

Print_ISBN

0-7803-5674-8

Type

conf

DOI

10.1109/IEMBS.1999.802726

Filename

802726