Design and analysis of prosthetic foot using additive manufacturing technique

Vijayan, V.; Kumar, S. Arun; Gautham, S.; Masthan, M. Mohamed; Piraichudan, N.

doi:10.1016/j.matpr.2020.07.195

Cited by 16 publications

(6 citation statements)

References 17 publications

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“…Figure 11 displays the plot of force vs displacement in the foot end, the experimental and numerical results are compared with good agreement. The result of the Figure 11 differs from most similar investigations on orthoses and foot prostheses (Ali et al , 2021; Rochlitz et al , 2018; Steck et al , 2023; Avila et al , 2021; Vijayan et al , 2020). These investigations often use FEM analysis to calculate deformation and equivalent Von Mises stress, which is erroneous when applied to brittle and anisotropic materials, as demonstrated in the present research.…”

Section: Resultscontrasting

confidence: 72%

“…When Rochlitz et al (2018) validated simulated results with experiments, disagreements arose, partly due to the use of isotropic material models instead of anisotropic models. In addition, the studies (Rochlitz et al , 2018; Vijayan et al , 2020) use loads corresponding to walking, whereas more rigorous standards are necessary for industrial and commercial applications.…”

Section: Resultsmentioning

confidence: 99%

“…anisotropic models. In addition, the studies (Rochlitz et al, 2018;Vijayan et al, 2020) use loads corresponding to walking, whereas more rigorous standards are necessary for industrial and commercial applications. Maximum flexural tests were carried out for different knee configurations.…”

Section: Yield Surface Validationmentioning

confidence: 99%

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Experimental characterization, theoretical modeling and failure analysis of the mechanical behavior of acrylonitrile butadiene styrene parts by fused filament fabrication

Algarín Roncallo,

Lopez Taborda,

Guillen

2023

RPJ

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Purpose The purpose of this research is present an experimental and numerical study of the mechanical properties of the acrylonitrile butadiene styrene (ABS) in the additive manufacturing (AM) by fused filament fabrication (FFF). The characterization and mechanical models obtained are used to predict the elastic behavior of a prosthetic foot and the failure of a prosthetic knee manufactured with FFF. Design/methodology/approach Tension tests were carried out and the elastic modulus, yield stress and tensile strength were evaluated for different material directions. The material elastic constants were determined and the influence of infill density in the mechanical strength was evaluated. Yield surfaces and failure criteria were generated from the tests. Failures over prosthetic elements in tridimensional stresses were analyzed; the cases were evaluated via finite element method. Findings The experimental results show that the material is transversely isotropic. The elasticity modulus, yield stress and ultimate tensile strength vary linearly with the infill density. The stresses and the failure criteria were computed and compared with the experimental tests with good agreement. Practical implications This research can be applied to predict failures and improve reliability in FFF or fused deposition modeling (FDM) products for applications in high-performance industries such as aerospace, automotive and medical. Social implications This research aims to promote its widespread adoption in the industrial and medical sectors by increasing reliability in products manufactured with AM based on the failure criterion. Originality/value Most of the models studied apply to plane stress situations and standardized specimens of printed material. However, the models applied in this study can be used for functional parts and three-dimensional stress, with accuracy in the range of that obtained by other researchers. The researchers also proposed a method for the mechanical study of fragile materials fabricated by processes of FFF and FDM.

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Section: Resultscontrasting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

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Experimental characterization, theoretical modeling and failure analysis of the mechanical behavior of acrylonitrile butadiene styrene parts by fused filament fabrication

Algarín Roncallo,

Lopez Taborda,

Guillen

2023

RPJ

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“…The authors designed the foot by topology optimisation techniques combined with finite element (FE) analysis. A similar approach was adopted by Vijayan et al [ 21 ]. Both works showed excellent weight reduction capabilities.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Stiffness-Driven Redesign of a Laminated Prosthetic Component Using Additive Manufacturing

et al. 2023

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Three-dimensional printed polymers offer unprecedented advantages for prosthetic applications, namely in terms of affordability and customisation. This work thus investigates the possibility of designing an additively manufactured prosthetic foot using continuous fibre-reinforced polymers as an alternative to composite laminate ones. A numerical approach was thus proposed and validated as a possible design tool for additively manufactured composite feet. This approach was based on explicit separate simulations of the infill, aiming to capture its homogenised engineering constants. The approach was validated on simple sandwich specimens with a different infill geometry: stiffness predictions were within the experimental standard deviation for 3D simulations. Such an approach was thus applied to redesign a laminated component of a foot prosthesis inspired by a commercial one with new additive technology. The new component was about 83% thicker than the reference one, with 1.6 mm of glass fibre skins out of about 22 mm of the total thickness. Its stiffness was within 5% of the reference laminated one. Overall, this work showed how additive manufacturing could be used as a low-cost alternative to manufacturing affordable prosthetic feet.

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“…The developed foot also exhibits high flexibility compared to such a foot. V. Vijayan [6] designed and analyzed a prosthetic foot using an additive manufacturing technique using a poly lactic acid material. The model was printed by using a 3D printer.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis on prosthetic leg under different loads and flexion angles for medical applications

Kumar¹,

Sai

2022

Journal of Mechanical and Energy Engineering

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Prosthetic legs (PL) are mainly used to perform leg amputations more easily. The design and performance of these legs mainly depend on the material selection and manufacturing methods. In the present study, alternative materials are considered for PL such as Al alloy, Ti alloy, Uni directional Carbon fiber epoxy (UDCFE), and combined composite material (CF, UDCFE and Ti alloy) to perform static and fatigue analysis . Static analysis was performed under four different load conditions 60 kg,70 kg, 80 Kg and 90 kg. Fatigue analysis was done under low cycle fatigue conditions. Theoretical calculations are evaluated at various inclinations of the foot 10°, 20°, and 30° with the ground. The results obtained theoretically are compared with Ansys results. The best material which gives the lesser value of deformation and lower damage factor is selected for the design. Further, experimental studies were suggested based on the results obtained from this work.

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Design and analysis of prosthetic foot using additive manufacturing technique

Cited by 16 publications

References 17 publications

Experimental characterization, theoretical modeling and failure analysis of the mechanical behavior of acrylonitrile butadiene styrene parts by fused filament fabrication

Experimental characterization, theoretical modeling and failure analysis of the mechanical behavior of acrylonitrile butadiene styrene parts by fused filament fabrication

Preliminary Stiffness-Driven Redesign of a Laminated Prosthetic Component Using Additive Manufacturing

Finite element analysis on prosthetic leg under different loads and flexion angles for medical applications

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