Investigation on Homogeneous Modeling of Gyroid Lattice Structures: Numerical Study in Static and Dynamic Conditions

Mancini, Edoardo; Utzeri, Mattia; Sasso, M.

doi:10.4028/p-3561q0

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…The process parameters were defined inside the slicing software. Based on our extensively testing in the laboratory, they ensure the best choice in strength, printability, and size accurancy [20,16]. Once the printing is complete, the parts undergone two post-treatement to obtain ultimate and stable mechanical properties.…”

Section: Methodsmentioning

confidence: 99%

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Influence of Core Cellular Structures on Collapse Mechanisms Maps of Sandwich Beams

Utzeri

Morichelli

Lattanzi

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The main advantage of 3D printing is manufacturing complex and innovative shapes which guarantee high mechanical properties. Therefore, it is necessary easily figure out the most suitable structure for the required design requirements. The well-known strategy to design sandwich panels is evaluating collapse maps as they determine the panel performances based on their geometrical features. The aim of this study is to update the traditional collapse maps by showing how the core shape can improve the sandwich beam performance. The collapse maps proposed are based on advanced analytical models than the traditional Gibson theories. The analytical modelling of the indentation phenomenon is based on Vlasov’s model. The analytical modelling of the bending phenomenon is based on the First Shear Order Theory. The overall panel stress and strain maps are computed superposing both effects. A composite sandwich panels with Gyroid core based are analyzed to verify the proposed model consistency. A core failure criterion is chosen by experimental testing evidence on the representative core structure. Once the computed stress state overtakes failure criterion ones, the critical load is defined. In the end, the model is exploited to compare the performances of four sandwich panels with cores based on different lattice structures.

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Section: Methodsmentioning

confidence: 99%

“…The core stiffness matrix can be obtained by Representive Volume Element (RVE) theory. It can be computed trough a homogenization analysis of the representive unit cell on its elastic properties [15,16]. Therefore, the cellular structure stiffness matrix will be the core one.…”

Section: Theorical Analysismentioning

confidence: 99%

Influence of Core Cellular Structures on Collapse Mechanisms Maps of Sandwich Beams

Utzeri

Morichelli

Lattanzi

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The Effect of Nozzle Diameter and Layer Thickness on Mechanical Behavi̇our of 3d Printed Pla Lattice Structures Under Quasi-Static Loading

Demirci

Senaysoy

TUĞCU

2023

International Journal of 3D Printing Technologies and Digital Industry

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Lattice structures are widely preferred because they have good properties such as lightness, high energy absorption capacity and strength. Moreover, these lattice structures can be produced by utilizing 3D printer. Therefore, this study aimed to investigate the effect of the mechanical behavior of the different printing parameters on the lattice structures. Firstly, FBCC and FBCCZ lattice structures were printed with various printing parameters such as nozzle diameter of 0.25 mm-0.4 mm and layer thickness of 0.1 mm–0.15 mm. Then, quasi-static compression tests were carried out to determine the mechanical behavior of lattice structures. Force-displacement behavior, equivalent elastic modulus and energy absorption capabilities of lattice structures printed with different parameters were calculated from the results of quasi-static compression test. According to the results, it was observed that the mechanical behavior was significantly affected when the nozzle diameter and layer thickness were changed. It was determined that the strength and energy absorption of the structures printed with a nozzle diameter of 0.25 mm and a layer thickness of 1.5 mm were decreased. In addition, it was observed that the effect of the printing parameters on the mechanical behavior can be different according to the lattice type and lattice rod diameter.

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Investigation on Homogeneous Modeling of Gyroid Lattice Structures: Numerical Study in Static and Dynamic Conditions

Cited by 2 publications

References 10 publications

Influence of Core Cellular Structures on Collapse Mechanisms Maps of Sandwich Beams

Influence of Core Cellular Structures on Collapse Mechanisms Maps of Sandwich Beams

The Effect of Nozzle Diameter and Layer Thickness on Mechanical Behavi̇our of 3d Printed Pla Lattice Structures Under Quasi-Static Loading

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