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Additive manufactured gyroid-based cell structures under compression: design, testing and simulation for biomedical
Juan Carlos Castro-Sandoval1, Alfredo Chavez1, Jorge Corona-Castuera1
1Advanced Materials, CIATEQ, A.C., Querétaro, México.
Computer Methods in Biomechanics and Biomedical Engineering
|February 15, 2023
Summary
This study investigated the mechanical properties of DMLS Ti-6Al-4V gyroid cellular structures for implants. Results show these structures mimic trabecular bone
Area of Science:
- Biomaterials Engineering
- Additive Manufacturing
- Mechanical Engineering
Background:
- Additive manufacturing enables complex structures like gyroid cellular structures (CS).
- Ti-6Al-4V is a common alloy for implants.
- Understanding mechanical behavior is crucial for implant design.
Purpose of the Study:
- To evaluate the mechanical behavior of DMLS Ti-6Al-4V gyroid CS under compression.
- To investigate the influence of volumetric fraction on elastic modulus.
- To assess the potential for implant applications.
Main Methods:
- Direct Metal Laser Sintering (DMLS) fabrication of Ti-6Al-4V gyroid CS.
- Experimental compression testing of cubic and cylindrical samples.
- Finite element analysis (FEA) for mechanical behavior prediction.
Main Results:
- Experimental results demonstrated that the CS mechanical behavior approximated that of trabecular bone.
- The elastic modulus was found to be influenced by the CS volumetric fraction.
- FEA model showed good agreement with experimental data.
Conclusions:
- DMLS Ti-6Al-4V gyroid CS exhibit mechanical properties suitable for approximating trabecular bone.
- FEA is a reliable tool for predicting the mechanical performance of these structures.
- These findings support the potential application of these CS in implant fabrication.
