Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Design of Carbon Composite Prosthetic Feet using Finite Element Methods

유한요소 해석기법을 이용한 탄소복합소재 인공발의 설계

  • Cho, Hyeon Seok (Korea Orthopedics & Rehabilitation Engineering Center) ;
  • Cha, Gook Chan (Korea Orthopedics & Rehabilitation Engineering Center) ;
  • Park, Jin Kook (Korea Orthopedics & Rehabilitation Engineering Center) ;
  • Kim, Shin Ki (Korea Orthopedics & Rehabilitation Engineering Center) ;
  • Lee, Suk Min (Korea Orthopedics & Rehabilitation Engineering Center) ;
  • Mun, Mu Sung (Korea Orthopedics & Rehabilitation Engineering Center) ;
  • Kim, Chang Bu (Department of Mechanical Engineering, Inha Univ.)
  • Received : 2012.10.08
  • Accepted : 2013.06.12
  • Published : 2013.07.01
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Abstract

The dynamic compliance characteristics of a prosthetic foot midgait are very important for natural performance in an amputee's gait and should be in a range that provides natural, stable walking. In this study, finite element analysis (FEA) and classical laminate theory were used to examine the mechanical characteristics of a carbon-epoxy composite laminate prosthetic foot as a function of variation in the lamination composition. From this analysis, an FEM model of a prosthetic keel, made from the composite material, was developed. The lamination composition of the keel was designed for improved stiffness. The prototype product was fabricated using an autoclave. Vertical loading response tests were performed to verify the simulation model. The results of the experiments were similar to those from simulations below the loading level of the gait, suggesting use of the proposed simulation model for prosthetic keel design.

Keywords

References

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