Analytical model of the elastic behavior of a modified face-centered cubic lattice structure

Alaña, Markel; Lopez-Arancibia, Aitziber; Pradera-Mallabiabarrena, Ainara; Galarreta, Sergio Ruiz de

doi:10.1016/j.jmbbm.2019.05.043

Cited by 26 publications

(8 citation statements)

References 43 publications

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“…So far, analytical models addressing the mechanical response of specific unit cells have been developed. [16][17][18][19][20][21][22] They can provide preliminary insight into the characteristics of a unit cell prior to proceeding with the manufacturing phase in a reasonable amount of time. Those, however, cover only a small fraction of the vast number of existing cells.…”

Section: Doi: 101002/adem202000611mentioning

confidence: 99%

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Alomar

Concli

2020

Adv Eng Mater

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Section: Doi: 101002/adem202000611mentioning

confidence: 99%

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Alomar

Concli

2020

Adv Eng Mater

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“…In different situations, orthopedic scaffolds were needed in various mechanical properties. The optimized Diamond/FCC was designed by eliminating the struts corresponding to two parallel faces for better bending performance (Alana et al, 2019). An optimized FCC with longitudinal struts was designed to obtain higher longitudinal compressive properties.…”

Section: The Diamond/fccmentioning

confidence: 99%

Porous Scaffold Design for Additive Manufacturing in Orthopedics: A Review

Chen

Han

Wang

et al. 2020

Front. Bioeng. Biotechnol.

143

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With the increasing application of orthopedic scaffolds, a dramatically increasing number of requirements for scaffolds are precise. The porous structure has been a fundamental design in the bone tissue engineering or orthopedic clinics because of its low Young's modulus, high compressive strength, and abundant cell accommodation space. The porous structure manufactured by additive manufacturing (AM) technology has controllable pore size, pore shape, and porosity. The single unit can be designed and arrayed with AM, which brings controllable pore characteristics and mechanical properties. This paper presents the current status of porous designs in AM technology. The porous structures are stated from the cellular structure and the whole structure. In the aspect of the cellular structure, non-parametric design and parametric design are discussed here according to whether the algorithm generates the structure or not. The non-parametric design comprises the diamond, the body-centered cubic, and the polyhedral structure, etc. The Voronoi, the Triply Periodic Minimal Surface, and other parametric designs are mainly discussed in parametric design. In the discussion of cellular structures, we emphasize the design, and the resulting biomechanical and biological effects caused by designs. In the aspect of the whole structure, the recent experimental researches are reviewed on uniform design, layered gradient design, and layered gradient design based on topological optimization, etc. These parts are summarized because of the development of technology and the demand for mechanics or bone growth. Finally, the challenges faced by the porous designs and prospects of porous structure in orthopedics are proposed in this paper.

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“…To avoid the risk of implant loosening, the implants should ideally be developed with comparable mechanical properties to those of natural bones. Metallic porous implants and porous structures have been investigated in the literature to reduce the problems associated with stiffness mismatch of the implants and optimize porous structure designs [4][5][6][7][8][9][10][11]. The mechanical properties of porous structures and their biological behavior, such as cell attachment and tissue growth, depend on the structural parameters of the porous structure, including the unit cell type, porosity, and pore size [12].…”

Section: Introductionmentioning

confidence: 99%

“…The non-stochastic or periodic cellular structures are built-in regular form and have higher mechanical properties [19]. These are commonly designed based on three-dimensional (3D) unit cells such as diamond lattice [20], Bodycentered-cubic (BCC) [5,8], face-centered-cubic (FCC) [4], Tetrahedron cell, and Octet truss cell [5]. Using Finite Element Analysis (FEA), previous studies have analyzed the mechanical behavior of different porous structures under different loading conditions, and the results were consistent when compared with the experimental results [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of Ti6Al4V porous structures for low-stiff hip implant application

Rakesh

Pal

2021

Int. J. Simul. Multidisci. Des. Optim.

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Solid metallic hip implants have much higher stiffness than the femur bone, causing stress-shielding and subsequent implant loosening. The development of low-stiff implants using metallic porous structures has been reported in the literature. Ti6Al4V alloy is a commonly used biomaterial for hip implants. In this work, Body-Center-Cubic (BCC), Cubic, and Spherical porous structures of four different porosities (82%, 76%, 70%, and 67%) were investigated to establish the range of ideal porosities of Ti6Al4V porous structures that can match the stiffness of the femur bone. The effective mechanical properties have been determined through Finite Element Analysis (FEA) under uniaxial compressive displacement of 0.32 mm. FEA predictions were validated with the analytical calculations obtained using Gibson and Ashby method. The effective mechanical properties of 82%, 76%, 70%, and 67% porous BCC and Cubic structures were found to match the mechanical properties of cortical bone closely. They were also well comparable to the Gibson-Ashby method-based calculations. BCC and Cubic porous structures with 67–82% porosity can mimic the stiffness of the femur bone and are suitable for low-stiff hip implant applications.

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Analytical model of the elastic behavior of a modified face-centered cubic lattice structure

Cited by 26 publications

References 43 publications

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Porous Scaffold Design for Additive Manufacturing in Orthopedics: A Review

Finite element analysis of Ti6Al4V porous structures for low-stiff hip implant application

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