Finite Element Analysis of the Performance and Structural Behavior of Polymers Embedded in the Structure of an Exo‐Prosthesis

ABSTRACT

This study presents a numerical‐based methodology for the integration of polymer materials as key components of an upper limb Exo‐prosthesis. The approach focuses on the use of carbon fiber‐reinforced poly‐lactic acid (PLA+CF), fabricated using additive manufacturing, for the distal phalanges and metacarpal elements. Material integration is achieved through finite element method (FEA) simulations, enabling the evaluation of structural behavior under dynamic loading conditions and ensuring compatibility with biomechanical requirements. The work validates the entire numerical model, including structural performance and material behavior, providing a comprehensive evaluation of the Exo‐prosthesis design. The validation of the numerical model is highlighted using a dynamic analysis based on the finite element method (FEA). By examining the structural behavior under various external loads, the manufacturing method and the type of material used in the prosthesis construction are assessed. The structural analysis of the components constituting the designed system is crucial, as it aids in identifying regions subjected to significant stresses. Advanced FEA simulations are employed not only to validate the overall design but also to optimize the prototype when effective stresses impact the structural integrity of the device.