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ARTICLE
Numerical study of the effects of prosthesis foot asymmetry on energy characters and roll-over characteristics
1
College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, China
Submission date: 2023-02-16
Final revision date: 2023-06-09
Acceptance date: 2023-06-09
Online publication date: 2023-08-30
Publication date: 2023-10-30
Corresponding author
Junxia Zhang
College of Mechanical Engineering, Tianjin University of Science & Technology, 300000, Tianjin, China
College of Mechanical Engineering, Tianjin University of Science & Technology, 300000, Tianjin, China
Journal of Theoretical and Applied Mechanics 2023;61(4):687-700
KEYWORDS
biometric prosthetic footcarbon fiber epoxy compositesroll-over shapeenergystore and return character
TOPICS
ABSTRACT
There is limited research available on the effect of asymmetric structure on the performance
of the prosthesis. In this paper, 12 sets of prosthetic feet with asymmetric structures were
developed using a planar polar coordinate system. The effect of asymmetry on the prosthesis
performance was investigated. The prosthetic feet with asymmetric structures were modeled
in a gradient manner within a polar coordinate system. A finite element (FE) model of
the prosthetic walking process was formulated, and dynamic simulations were conducted
to simulate the loading of the prosthesis during the support phase. Evaluation indices such
as energy characteristics, contact pressure and roll-over shape were selected to investigate
the effects of the asymmetric structure. The results indicate that 1 and 3 asymmetry
significantly affects strain energy density. Moreover, incorporating heel asymmetry proves
to be more advantageous in reducing contact pressure of the prosthesis during the middle
stance moment. The optimal parameters for asymmetric prostheses are determined based
on these findings.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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