A validated finite element analysis procedure for porous structures

Galarreta, Sergio Ruiz de; Jeffers, Jonathan R.T.; Ghouse, Shaaz

doi:10.1016/j.matdes.2020.108546

Cited by 46 publications

(30 citation statements)

References 33 publications

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“…[20,141] Galarreta et al used the same methodology to develop a bilinear elastic-plastic model where the yield strength (0.2% offset) is the intersection between the slopes of the initial stiffness and plastic-hardening modulus. [56] The authors showed that a material model derived from a strut tensile test is accurate. This approach is usually tempting as there is no further need for physical modeling of imperfections.…”

Section: Materials Modelmentioning

confidence: 99%

“…[ 132 ] Conversely, Galarreta et al showed that the modulus difference between a model with frictionless contact and a model with 0.2 and 0.3 frictional coefficient is 16.5% and 22.5%, respectively. [ 56 ] In addition, they proved that the boundary conditions affect the number of cells needed in the loading direction to ensure the convergence of mechanical properties.…”

Section: Numerical Approachesmentioning

confidence: 99%

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

Alomar

Concli

2020

Adv Eng Mater

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Section: Materials Modelmentioning

confidence: 99%

Section: Numerical Approachesmentioning

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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“…The two approaches could be combined, as in [ 23 , 25 ]: in this case the FE model of the whole component had material model parameters extracted from detailed models of the actual mesostructure. A great number of numerical studies were oriented to the analysis of lattice structures behavior (e.g., [ 35 ]) or to the use of topological optimization to find the best shape for the components or for the infill design (e.g., [ 36 ]).…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulations of Components Produced by Fused Deposition 3D Printing

Scapin

Peroni

2021

Materials

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Three-dimensional printing technology using fused deposition modeling processes is becoming more and more widespread thanks to the improvements in the mechanical properties of materials with the addition of short fibers into the polymeric filaments. The final mechanical properties of the printed components depend, not only on the properties of the filament, but also on several printing parameters. The main purpose of this study was the development of a tool for designers to predict the real mechanical properties of printed components by performing finite element analyses. Two different materials (nylon reinforced with glass or carbon fibers) were investigated. The experimental identification of the elastic material model parameters was performed by testing printed fully filled dog bone specimens in two different directions. The obtained parameters were used in numerical analyses to predict the mechanical response of simple structures. Blocks of 20 mm × 20 mm × 160 mm were printed in four different percentages of a triangular infill pattern. Experimental and numerical four-point bending tests were performed, and the results were compared in terms of load versus curvature. The analysis of the results demonstrated that the purely elastic transversely isotropic material model is adequate for predicting behavior, at least before nonlinearities occur.

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“…Recent studies discussed the use of FE analysis for computing the mechanical strength of such PLS [ 37 , 38 ]. In a similar attempt by Mehboob et al [ 39 ] FE analysis of porous Ti64 femoral stems with body-centered-cube (BCC) structure was conducted in ABAQUS.…”

Section: Introductionmentioning

confidence: 99%

Cubic Lattice Structures of Ti6Al4V under Compressive Loading: Towards Assessing the Performance for Hard Tissue Implants Alternative

Dhiman

Singh

Sidhu³

et al. 2021

Materials

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Porous Lattice Structure (PLS) scaffolds have shown potential applications in the biomedical domain. These implants’ structural designs can attain compatibility mechanobiologically, thereby avoiding challenges related to the stress shielding effect. Different unit cell structures have been explored with limited work on the fabrication and characterization of titanium-based PLS with cubic unit cell structures. Hence, in the present paper, Ti6Al4V (Ti64) cubic PLS scaffolds were analysed by finite element (FE) analysis and fabricated using selective laser melting (SLM) technique. PLS of the rectangular shape of width 10 mm and height 15 mm (ISO: 13314) with an average pore size of 600–1000 μm and structure porosity percentage of 40–70 were obtained. It has been found that the maximum ultimate compressive strength was found to be 119 MPa of PLS with a pore size of 600 μm and an overall relative density (RD) of 57%. Additionally, the structure’s failure begins from the micro-porosity formed during the fabrication process due to the improper melting along a plane inclined at 45 degree.

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A validated finite element analysis procedure for porous structures

Cited by 46 publications

References 33 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

Numerical Simulations of Components Produced by Fused Deposition 3D Printing

Cubic Lattice Structures of Ti6Al4V under Compressive Loading: Towards Assessing the Performance for Hard Tissue Implants Alternative

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