Numerical analysis of a transtibial prosthesis socket using 3D-Printed Bio-Based PLA
Povzetek
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.
Ključne besede
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;
Podatki
| Jezik: | Angleški jezik |
|---|---|
| Leto izida: | 2023 |
| Tipologija: | 1.01 - Izvirni znanstveni članek |
| Organizacija: | UM FS - Fakulteta za strojništvo |
| Založnik: | MDPI |
| UDK: | 331.1:519.6 |
| COBISS: |
144563203
|
| ISSN: | 1996-1944 |
| Št. ogledov: | 58 |
| Št. prenosov: | 7 |
| Ocena: | 0 (0 glasov) |
| Metapodatki: |
|
Ostali podatki
| Sekundarni jezik: | Slovenski jezik |
|---|---|
| Sekundarne ključne besede: | 3D tiskanje;bioosnovanost;polimlečna kislina;proteze;ležišče proteze;numerični model;metoda končnih elementov; |
| Vrsta dela (COBISS): | Članek v reviji |
| Strani: | 17 str. |
| Letnik: | ǂVol. ǂ16 |
| Zvezek: | ǂiss. ǂ5, [article no.] 1985 |
| Čas izdaje: | Feb. 2023 |
| DOI: | 10.3390/ma16051985 |
| ID: | 23140461 |
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