In silico evaluation of lattice designs for additively manufactured total hip implants

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dc.date.accessioned2022-03-17T07:18:35Z
dc.date.available2022-03-17T07:18:35Z
dc.date.issued2022en_US
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description.abstractAdditive manufacturing restructures the fabrication of custom medical implants and transforms the design, topology optimization, and material selection perspectives in biomechanical applications. Additionally, it facilitated the design and fabrication of patient-oriented hip implants. Selection of proper lattice type is critical in additive manufacturing of hip implants. The lattice types reduce the implant mass and, due to higher stress distribution and deformations as compared to the rigid implants, it brings down the stress shielding issues. This study introduces a rigid shell structure and infill lattice hip implant. Additionally, the effect of various lattice unit cell thickness (0.2–1 mm) and elemental size (2.5–5 mm) while applying 2300 N axial force is explored numerically. A cubic structure with two rigid surfaces on the top and bottom is outlined to separate the effect of the hip implant cross-sectional area variations. The stress distribution and deformation characteristics are validated with the hip implant design. The Finite Element Analysis (FEA) demonstrated that the Weaire-Phelan lattice structure exhibits the least stress and deformation among the other types at various design parameters. Additionally, the same methodology is applied to three biocompatible hip implant materials as Ti–6Al–4V, TA15 (Ti–6Al–2Zr–1Mo–1V), and CoCr28Mo6. Finally, the effect of the unit cell thickness and size on the implant's mass reduction considering the lattice's safety factor is investigated for the mentioned materials. The selection of a Weaire–Phelan lattice with the optimized safety factor and mass reduction is represented considering all the results. The optimized parameters for Titanium-based alloys are approximately 3.5 mm unit cell size with 0.6 mm beam thickness. However, the CoCr Mo-based alloy requires a thicker beam size (about 0.8 mm) due to lower safety factors.en_US
dc.identifier.citationIzri, Z., Bijanzad, A., Torabnia, S., & Lazoglu, I. (2022). In silico evaluation of lattice designs for additively manufactured total hip implants. Computers in Biology and Medicine.en_US
dc.identifier.issn0010-4825
dc.identifier.scopus2-s2.0-85125499772
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://hdl.handle.net/20.500.12939/2283
dc.identifier.volume144en_US
dc.identifier.wosWOS:000806845300002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorZineddine, Izri
dc.language.isoen
dc.publisherComputers in Biology and Medicineen_US
dc.relation.ispartofComputers in Biology and Medicine
dc.relation.isversionof10.1016/j.compbiomed.2022.105353en_US
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFEAen_US
dc.subjectHip Implanten_US
dc.subjectLatticeen_US
dc.subjectStress Shieldingen_US
dc.subjectWeaire–Phelanen_US
dc.titleIn silico evaluation of lattice designs for additively manufactured total hip implants
dc.typeArticle

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