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Finite element modeling of manufacturing irregularities of porous materials
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 Title & Authors
Finite element modeling of manufacturing irregularities of porous materials
Gonzalez, Fernando J. Quevedo; Nuno, Natalia;
 
 Abstract
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.
 Keywords
additive manufacturing;electron beam melting;porous materials;finite element;manufacturing irregularities;mechanical properties;
 Language
English
 Cited by
1.
Lattice Structures and Functionally Graded Materials Applications in Additive Manufacturing of Orthopedic Implants: A Review, Journal of Manufacturing and Materials Processing, 2017, 1, 2, 13  crossref(new windwow)
2.
Influence of load orientation and of types of loads on the mechanical properties of porous Ti6Al4V biomaterials, Materials & Design, 2017, 135, 309  crossref(new windwow)
3.
Modelling and characterization of a porosity graded lattice structure for additively manufactured biomaterials, Materials & Design, 2017, 121, 383  crossref(new windwow)
 References
1.
Adjari, A., Nayeb-Hashemi, H., Canavan, P. and Warner, G. (2008), "Effect of defects on elastic-plastic behavior of cellular materials", Mater. Sci. Eng., A, 487(1), 558-567. crossref(new window)

2.
Ahmadi, S.M., Campoli, G., Amin Yavari, S., Sajadi, B., Wauthle, R., Schrooten, J., Weinans, H. and Zadpoor, A.A. (2014), "Mechanical behavior of open-cell porous biomaterials made of diamond lattice unit cells", J. Mech. Behav. Biomed. Mater., 34, 106-115. crossref(new window)

3.
Alkhader, M. and Vural, M. (2008), "Mechanical response of cellular solids: Role of cellular topology and microstructural irregularity", Int. J. Eng. Sci., 46(10), 1035-1051. crossref(new window)

4.
Arabnejad, S. and Pasini, D. (2012), "Multiscale design and multiobjective optimization of orthopedic hip implants with functionally graded cellular material", J. Biomech. Eng., 134(3), 031004-1-031004-10. crossref(new window)

5.
Arabnejad, S. and Pasini, D. (2013), "Mechanical properties of lattice materials via asymptotic homogenization and comparison with alternative homogenization methods", Int. J. Mech. Sci., 77, 249-262. crossref(new window)

6.
ARCAM AB. Ti6Al4V ELI Titanium Alloy. From http://www.arcam.com/wp-content/uploads/Arcam-Ti6Al4V-ELI-Titanium-Alloy.pdf

7.
Ashby, M.F. (2006), "The properties of foams and lattices", Philos. Trans. R. Soc. Lonodon, Ser. A, 364(1838), 15-30. crossref(new window)

8.
Barbas, Q., Bonnet, A.-S., Lipinski, P., Pesci, R. and Dubois, G. (2012), "Development and mechanical characterization of porous titanium bone substitutes", J. Mech. Behav. Biomed. Mater., 9, 34-44. crossref(new window)

9.
Campoli, G., Borleffs, M.S., Amin Yavari, S., Wauthle, R., Weinans, H. and Zadpoor, A.A. (2013), "Mechanical properties of open-cell metallic biomaterials manufactured using additive manufacturing", Mater. Des., 49, 957-965. crossref(new window)

10.
Chen, C., Lu, T.J. and Fleck, N.A. (1999), "Effect of imperfections on the yielding of two-dimensional foams", J. Mech. Phys. Solid., 47(11), 2235-2272. crossref(new window)

11.
Fraldi, M., Esposito, L., Perrella, G., Cutolo, A. and Cowin, S.C. (2010), "Topological optimization in hip prosthesis design", Biomech. Model. Mechanobiol., 9(4), 389-402. crossref(new window)

12.
Harrigan, J., Reida, S. and Yaghoubib, S. (2010), "The correct analysis of shocks in a cellular material", Int. J. Impact Eng., 37(8), 918-927. crossref(new window)

13.
Hazlehurst, K., Wang, C.J. and Stanford, M. (2013), "Evaluation of the stiffness characteristics of square pore CoCrMo cellular structures manufactured using laser melting technology for potential orthopaedic applications", Mater. Des., 51, 949-955. crossref(new window)

14.
Heo, H., Ju, J. and Kim, D.-M. (2013), "Compliant cellular structures: Application to a passive morphing airfoil", Compos. Struct., 106, 560-569. crossref(new window)

15.
Herrera, A., Yanez, A., Martel, O., Afonso, H. and Monopoli, D. (2014), "Computational study and experimental validation of porous structures fabricated by electron beam melting: A challenge to avoid stress shielding", Mater. Sci. Eng., C, 45, 89-93. crossref(new window)

16.
Karamooz Ravari, M.R. and Kadkhodaei, M. (2015), "A computationally efficient modeling approach for predicting mechanical behavior of cellular lattice structures", J. Mater. Eng. Perform., 24(1), 245-252. crossref(new window)

17.
Kuiper, J.H. and Huiskes, R. (1997), "Mathematical optimization of elastic properties: application to cementless hip stem design", J. Biomech. Eng., 119(2), 166-174. crossref(new window)

18.
Kumar, V., Manogharan, G. and Cormier, D.R. (2009), "Design of periodic cellular structures for heat exchanger applications", 20th Solid Freeform Fabrication Symposium, Texas, August, 738-748.

19.
Luxner, M.H., Stampfl, J. and Pettermann, H. (2007), "Numerical simulations of 3D open cell structures-Influence of structural irregularities on elastoplasticity and deformation localization", Int. J. Solids Struct., 44(9), 2990-3003. crossref(new window)

20.
Luxner, M.H., Stampfl, J. and Pettermann, H.E. (2005), "Finite element modeling concepts and linear analyses of 3D regular open cell structures", Mech. Behav. Cell. Solid., 40(22), 5859-5866.

21.
Luxner, M.H., Stampfl, J. and Pettermann, H.E. (2009), "Nonlinear simulations on the interaction of disorders and defects in open cell structures", Comput. Mater. Sci., 47(2), 418-428. crossref(new window)

22.
Maloney, K.J., Fink, K.D., Schaedler, T.A., Kolodziejska, J.A., Jacobsen, A.J. and Roper, C.S. (2012), "Multifunctional heat exchangers derived from three-dimensional micro-lattice structures", Int. J. Heat Mass Transfer., 55(9-10), 2486-2493. crossref(new window)

23.
Parthasarathy, J., Starly, B. and Raman, S. (2011), "A design for the additive manufacture of functionally graded porous structures with tailored mechanical properties for biomedical applications", J. Manuf. Processes, 13(2), 160-170. crossref(new window)

24.
Petrovic, V., Blasco, J.R., Portoles, L., Morales, I., Primo, V., Atienza, C., Moreno, J.F. and Belloch, V. (2012), A study of mechanical and biological behavior of porous Ti6Al4V fabricated on EBM, Innovative Developments in Virtual and Physical Prototyping, Taylor and Francis, London, United Kingdom, 115-120.

25.
Quevedo Gonzalez, F.J. and Nuno, N. (2015), "Finite element modelling approaches for well-ordered porous metallic materials for orthopaedic applications: cost effectiveness and geometrical considerations", Comput. Meth. Biomech. Biomed. Eng., 1-10.

26.
Smith, M., Guan, Z. and Cantwell, W.J. (2013), "Finite element modelling of the compressive response of lattice structures manufactured using the selective laser melting technique", Int. J. Mech. Sci., 67, 28-41. crossref(new window)

27.
Spadoni, A. and Ruzzene, M. (2007), "Static aeroelastic response of chiral-core airfoils", J. Intell. Mater. Syst. Struct., 18, 1067-1075. crossref(new window)

28.
Xiao, D., Yang, Y., Su, X., Wang, D. and Sun, J. (2013), "An integrated approach of topology optimized design and selective laser melting process for titanium implants materials", Bio-Medical Mater. Eng., 23(5), 433-445.

29.
Zhu, H.X., Hobdell, J.R. and Windle, A.H. (2001), "Effects of cell irregularity on the elastic properties of 2D Voronoi honeycombs", J. Mech. Phys. Solids., 49(4), 857-870. crossref(new window)