On the porosity-dependent permeability and conductivity of triply periodic minimal surface based porous media

Sauermoser-Yri, Marco; Veldurthi, Naresh; Wölfle, Christoph Hubertus; Svartvatn, Preben Johnsen; Flo Hoem, Svenn Ove; Lid, Markus Joakim; Bock, Robert; Palko, James W.; Torgersen, Jan

doi:10.1016/j.jmrt.2023.09.242

Cited by 6 publications

(1 citation statement)

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“…In order to define the onset of densification, determine the optimal energy absorption of the lattice structure, and provide a numerical method for better comparison of the SEA of different lattice structures, an energy efficiency parameter is calculated based on the stress-strain curve (Figure 2a) and is defined by Equation (3).…”

Section: Compression and Energy Absorption Indicatorsmentioning

confidence: 99%

Prediction of Compressive Behavior of Laser-Powder-Bed Fusion-Processed TPMS Lattices by Regression Analysis

Şimşek,

Gülcan,

Günaydın

et al. 2024

JMMP

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Triply periodic minimal surface (TPMS) structures offer lightweight and high-stiffness solutions to different industrial applications. However, testing of these structures to calculate their mechanical properties is expensive. Therefore, it is important to predict the mechanical properties of these structures effectively. This study focuses on the effectiveness of using regression analysis and equations based on experimental results to predict the mechanical properties of diamond, gyroid, and primitive TPMS structures with different volume fractions and build orientations. Gyroid, diamond, and primitive specimens with three different volume fractions (0.2, 0.3, and 0.4) were manufactured using a laser powder bed fusion (LPBF) additive manufacturing process using three different build orientations (45°, 60°, and 90°) in the present study. Experimental and statistical results revealed that regression analysis and related equations can be used to predict the mass, yield stress, elastic modulus, specific energy absorption, and onset of densification values of TPMS structures with an intermediate volume fraction value and specified build orientation with an error range less than 1.4%, 7.1%, 19.04%, 21.6%, and 13.4%, respectively.

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Section: Compression and Energy Absorption Indicatorsmentioning

confidence: 99%