Biomaterials and Biomechanics in Bioengineering

  • 제3권1호
  • /
  • Pages.1-14
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  • 2016
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  • 2465-9835(pISSN)
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  • 2465-9959(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Finite element modeling of manufacturing irregularities of porous materials

  • Gonzalez, Fernando J. Quevedo (Laboratoire de recherche en Imagerie et Orthopedie (LIO), Departement de Genie de la Production Automatisee, Ecole de Technologie Superieure) ;
  • Nuno, Natalia (Laboratoire de recherche en Imagerie et Orthopedie (LIO), Departement de Genie de la Production Automatisee, Ecole de Technologie Superieure)
  • 투고 : 2015.06.30
  • 심사 : 2015.10.14
  • 발행 : 2016.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Well-ordered porous materials are very promising in orthopedics since they allow tailoring the mechanical properties. Finite element (FE) analysis is commonly used to evaluate the mechanical behavior of well-ordered porous materials. However, FE results generally differ importantly from experimental data. In the present article, three types of manufacturing irregularities were characterized on an additive manufactured porous titanium sample having a simple cubic unit-cell: strut diameter variation, strut inclination and fractured struts. These were included in a beam FE model. Results were compared with experimental data in terms of the apparent elastic modulus (Eap) and apparent yield strength (SY,ap). The combination of manufacturing irregularities that yielded the closest results to experimental data was determined. The idealized FE model resulted in an Eap one order of magnitude larger than experimental data and a SY,ap almost twice the experimental values. The strut inclination and fractured struts showed the strongest effects on Eap and SY,ap, respectively. Combining the three manufacturing irregularities produced the closest results to experimental data. The model also performed well when applied to samples having different structural dimensions. We recommend including the three proposed manufacturing irregularities in the FE models to predict the mechanical behavior of such porous structures.

키워드

과제정보

연구 과제 주관 기관 : Natural Sciences and Engineering Research Council of Canada (NSERC)

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  1. Lattice Structures and Functionally Graded Materials Applications in Additive Manufacturing of Orthopedic Implants: A Review vol.1, pp.2, 2017, https://doi.org/10.3390/jmmp1020013
  2. Influence of load orientation and of types of loads on the mechanical properties of porous Ti6Al4V biomaterials vol.135, 2017, https://doi.org/10.1016/j.matdes.2017.09.045
  3. Modelling and characterization of a porosity graded lattice structure for additively manufactured biomaterials vol.121, 2017, https://doi.org/10.1016/j.matdes.2017.02.021
  4. A validated finite element analysis procedure for porous structures vol.189, pp.None, 2020, https://doi.org/10.1016/j.matdes.2020.108546
  5. Computational analysis of the effects of geometric irregularities and post-processing steps on the mechanical behavior of additively manufactured 316L stainless steel stents vol.15, pp.12, 2020, https://doi.org/10.1371/journal.pone.0244463
  6. Investigation of The Effect of Different Prosthesis Designs and Numbers on Stress, Strain and Deformation Distribution vol.12, pp.4, 2016, https://doi.org/10.24107/ijeas.816227
  7. Improving the Accuracy of Analytical Relationships for Mechanical Properties of Permeable Metamaterials vol.11, pp.3, 2016, https://doi.org/10.3390/app11031332
  8. Structure Optimization of a High-Temperature Oxygen-Membrane Module Using Finite Element Analysis vol.14, pp.16, 2021, https://doi.org/10.3390/en14164992