Finite element analysis of the mechanical properties of laser powder bed fusion-produced Ti6Al4V sheet- and skeleton-gyroid structures

Luo, Zhichao, Tang, Qian, Feng, Qixiang, Ma, Shuai, Song, Jun, Setchi, Rossi ORCID: https://orcid.org/0000-0002-7207-6544, Guo, Fuyu and Zhang, Yuanhang 2024. Finite element analysis of the mechanical properties of laser powder bed fusion-produced Ti6Al4V sheet- and skeleton-gyroid structures. Presented at: 10th International Conference on Sustainable Design and Manufacturing (KES-SDM 2023), 18-20 September 2023. Published in: Scholtz, Steffen G., Howlett, Robert J. and Setchi, Rossi eds. Sustainable Design and Manufacturing 2023: Proceedings of the 10th International Conference on Sustainable Design and Manufacturing (KES-SDM 2023). , vol.377 Springer, pp. 103-113. 10.1007/978-981-99-8159-5_9

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Abstract

Triply periodic minimal surface structures manufactured by additive manufacturing are one of the most important means to achieve lightweight in various fields. However, their manufacture using laser powder bed fusion still requires considerable research. In this study, three gyroid structures with volume fraction ranging from 10 to 30% were designed and fabricated using Ti6Al4V. Their mechanical properties, failure modes and energy absorption properties were studied by simulation prediction and experimental test. The results show that their elastic modulus, yield strength, peak stress and the energy absorption enhance with the increase in the volume fraction. The simulation results are in good agreement with the experimental results. Two failure modes appear on the adjacent side of the structure, namely 45-degree shear failure and layer-by-layer unit brittle collapse. In terms of energy absorption, the energy absorption efficiency of large volume fraction structure is more stable. This study significantly enhanced the understanding of gyroid structure and provided a more reliable basis for the selection of TPMS structure types and design parameters.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	Springer
ISBN:	9789819981588
Last Modified:	22 Mar 2024 13:15
URI:	https://orca.cardiff.ac.uk/id/eprint/166923

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