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Abstract <p>In this work, it was investigated the effect of unit cell size gradation on the energy absorption capabilities of triply periodic minimal surfaces (TPMS) structures. The TPMS (Primitive, Diamond and Gyroid) structures used in the study were built graded with an FDM 3D printer. The study produced all three structures (initial cell size × final cell size) in 12 × 6&#xa0;mm, 8 × 4&#xa0;mm, and 6 × 3&#xa0;mm unit cell size gradients. As a result of the compression tests, the highest peak crushing force (PCF) was measured as 3878.13 N in the graded Diamond 12 × 6 structure, and the lowest peak breaking force was measured as 2057.81 N in the graded Primitive 6 × 3 structure. When the energy absorption (EA) capabilities of the structures were evaluated, the highest toughness was obtained as 55.39&#xa0;J in graded Diamond 8 × 4, and the lowest toughness was obtained as 19.41&#xa0;J in graded Primitive 12 × 6 structure. This change was determined as − 17.77% in Primitive, 28.01% in Diamond and 43.48% in Gyroid in terms of EA; and − 2.98% in Primitive, 31.81% in Diamond and 34.93% in Gyroid in terms of SEA. As a result, it was determined that the energy capacities of the structures could be increased significantly with the effect of the unit cell gradient.</p> Graphical abstract <p></p>

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Investigation of energy absorption performance of functionally graded TPMS structures produced by fused deposition modeling

  • 期刊论文

  • 发表日期：

    2025年11月21日

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  • Vedat Taşdemir

摘要

Abstract

In this work, it was investigated the effect of unit cell size gradation on the energy absorption capabilities of triply periodic minimal surfaces (TPMS) structures. The TPMS (Primitive, Diamond and Gyroid) structures used in the study were built graded with an FDM 3D printer. The study produced all three structures (initial cell size × final cell size) in 12 × 6 mm, 8 × 4 mm, and 6 × 3 mm unit cell size gradients. As a result of the compression tests, the highest peak crushing force (PCF) was measured as 3878.13 N in the graded Diamond 12 × 6 structure, and the lowest peak breaking force was measured as 2057.81 N in the graded Primitive 6 × 3 structure. When the energy absorption (EA) capabilities of the structures were evaluated, the highest toughness was obtained as 55.39 J in graded Diamond 8 × 4, and the lowest toughness was obtained as 19.41 J in graded Primitive 12 × 6 structure. This change was determined as − 17.77% in Primitive, 28.01% in Diamond and 43.48% in Gyroid in terms of EA; and − 2.98% in Primitive, 31.81% in Diamond and 34.93% in Gyroid in terms of SEA. As a result, it was determined that the energy capacities of the structures could be increased significantly with the effect of the unit cell gradient.

Graphical abstract