Numerical analysis of a transtibial prosthesis socket using 3D-Printed Bio-Based PLA
Abstract
Lower-limb prosthesis design and manufacturing still rely mostly on the workshop process of trial-and-error using expensive unrecyclable composite materials, resulting in time-consuming, material-wasting, and, ultimately, expensive prostheses. Therefore, we investigated the possibility of utilizing Fused Deposition Modeling 3D-printing technology with inexpensive bio-based and bio-degradable Polylactic Acid (PLA) material for prosthesis socket development and manufacturing. The safety and stability of the proposed 3D-printed PLA socket were analyzed using a recently developed generic transtibial numeric model, with boundary conditions of donning and newly developed realistic gait cycle phases of a heel strike and forefoot loading according to ISO 10328. The material properties of the 3D-printed PLA were determined using uniaxial tensile and compression tests on transverse and longitudinal samples. Numerical simulations with all boundary conditions were performed for the 3D-printed PLA and traditional polystyrene check and definitive composite socket. The results showed that the 3D-printed PLA socket withstands the occurring von-Mises stresses of 5.4 MPa and 10.8 MPa under heel strike and push-off gait conditions, respectively. Furthermore, the maximum deformations observed in the 3D-printed PLA socket of 0.74 mm and 2.66 mm were similar to the check socket deformations of 0.67 mm and 2.52 mm during heel strike and push-off, respectively, hence providing the same stability for the amputees. We have shown that an inexpensive, bio-based, and bio-degradable PLA material can be considered for manufacturing the lower-limb prosthesis, resulting in an environmentally friendly and inexpensive solution.
Keywords
3D tiskanje;bio-osnovan;polimlečna kislina;proteze;ležišče proteze;numerični model;metoda končnih elementov;3D printing;bio-based;polylactic acid;PLA;prosthesis;prosthesis socket;numerical model;finite element method;
Data
| Language: | English |
|---|---|
| Year of publishing: | 2023 |
| Typology: | 1.01 - Original Scientific Article |
| Organization: | UM FS - Faculty of Mechanical Engineering |
| Publisher: | MDPI |
| UDC: | 331.1:519.6 |
| COBISS: |
144563203
|
| ISSN: | 1996-1944 |
| Views: | 58 |
| Downloads: | 7 |
| Average score: | 0 (0 votes) |
| Metadata: |
|
Other data
| Secondary language: | Slovenian |
|---|---|
| Secondary keywords: | 3D tiskanje;bioosnovanost;polimlečna kislina;proteze;ležišče proteze;numerični model;metoda končnih elementov; |
| Type (COBISS): | Article |
| Pages: | 17 str. |
| Volume: | ǂVol. ǂ16 |
| Issue: | ǂiss. ǂ5, [article no.] 1985 |
| Chronology: | Feb. 2023 |
| DOI: | 10.3390/ma16051985 |
| ID: | 23140461 |
Recommended works:
Numerical analysis of a transtibial prosthesis socket using 3D-Printed Bio-Based PLA
2023,
no subtitle data available
Development of a generic numerical transtibial model for limb–prosthesis system evaluation
2023,
no subtitle data available
Validacija numeričnega modela aplikatorja za magnetno stimulacijo
2023,
magistrsko delo
Simulacija temperatur tribološkega kontakta
2020,
magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Metode modeliranja zvarnih spojev profilov po MKE
2022,
zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni program