Design of functionally graded gyroid foams using optimization algorithms and the finite element method

Pais, Ana; Alves, Jorge Lino; Belinha, J.

doi:10.1007/s00170-020-06542-w

Cited by 6 publications

(2 citation statements)

References 34 publications

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“…In the works of Pais et al [24,25], which consisted on the development of porous implants, it was shown that the bio-inspired algorithm combined with an experimental material law for the gyroid infill obtained through 3D printing (FFF) [26,27] achieved structural configuration with adequate stiffness to replace human bone.…”

Section: Lattice Materials For Tissue Engineeringmentioning

confidence: 99%

Multiscale Homogenization Techniques for TPMS Foam Material for Biomedical Structural Applications

et al. 2023

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Multiscale techniques, namely homogenization, result in significant computational time savings in the analysis of complex structures such as lattice structures, as in many cases it is inefficient to model a periodic structure in full detail in its entire domain. The elastic and plastic properties of two TPMS-based cellular structures, the gyroid, and the primitive surface are studied in this work through numerical homogenization. The study enabled the development of material laws for the homogenized Young’s modulus and homogenized yield stress, which correlated well with experimental data from the literature. It is possible to use the developed material laws to run optimization analyses and develop optimized functionally graded structures for structural applications or reduced stress shielding in bio-applications. Thus, this work presents a study case of a functionally graded optimized femoral stem where it was shown that the porous femoral stem built with Ti-6Al-4V can minimize stress shielding while maintaining the necessary load-bearing capacity. It was shown that the stiffness of cementless femoral stem implant with a graded gyroid foam presents stiffness that is comparable to that of trabecular bone. Moreover, the maximum stress in the implant is lower than the maximum stress in trabecular bone.

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Section: Lattice Materials For Tissue Engineeringmentioning

confidence: 99%

Multiscale Homogenization Techniques for TPMS Foam Material for Biomedical Structural Applications

et al. 2023

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“…In 3.1, it was explained how the mechanical properties of the bone tissue are related to the apparent density [50,50,[53][54][55][56]. It is possible to extend these correlations to other materials, namely cellular materials, since the material is porous and its properties will vary with the apparent density [2,57,58].…”

Section: Materials Lawsmentioning

confidence: 99%