A Comparative Finite Element Study of Cubic Unit Cells for Selective Laser Melting

Adedeji Aremu; Ian Maskery; Chris Tuck; Ian Ashcroft; Ricky Wildman; Richard Hague

A Comparative Finite Element Study of Cubic Unit Cells for Selective Laser Melting

Adedeji Aremu, Ian Maskery, Chris Tuck, Ian Ashcroft, Ricky Wildman, Richard Hague

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding

Abstract

Selective laser melting (SLM) enables the utilization of complicated lattice structures in metallic components. To exploit this capability, it is important to understand the structural properties of these lattices. Topological variations in lattices are diverse, however, only a few are suitable for SLM since some lattices require supports during manufacture while others self-support. Diﬃculties associated with the removal of these supports and their detrimental eﬀects on surface ﬁnish makes the latter group better suited for SLM. In this work, we investigate the structural properties of some self-supporting unit cells via a ﬁnite element study and show that the performance of a lattice structure is largely dependent on the topology of the unit cell. Variants of the gyroid and face centred cubic unit cells performed better than body centred cubic cells. This was also observed when lattices, made of repeating unit cells were compared.

Original language	English
Title of host publication	25th Solid Freeform Symposium
Publisher	University of Texas at Austin
Pages	1238-1249
Number of pages	12
Publication status	Published - 2014
Externally published	Yes
Event	25th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference - Austin, United States Duration: 4 Aug 2014 → 6 Aug 2014 Conference number: 25

Publication series

Name
ISSN (Electronic)	1053-2153

Conference

Conference	25th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference
Country	United States
City	Austin
Period	4/08/14 → 6/08/14

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Bibliographical note

Manuscripts for this conference are available for free download at the Lab for Freeform Fabrication website:
http://utwired.engr.utexas.edu/lff/symposium/proceedingsArchive/toc.cfm.

Cite this

Aremu, A., Maskery, I., Tuck, C., Ashcroft, I., Wildman, R., & Hague, R. (2014). A Comparative Finite Element Study of Cubic Unit Cells for Selective Laser Melting. In 25th Solid Freeform Symposium (pp. 1238-1249). University of Texas at Austin.

Aremu, A, Maskery, I, Tuck, C, Ashcroft, I, Wildman, R & Hague, R 2014, A Comparative Finite Element Study of Cubic Unit Cells for Selective Laser Melting. in 25th Solid Freeform Symposium . University of Texas at Austin, pp. 1238-1249, 25th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, Austin, United States, 4/08/14.

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AU - Ashcroft, Ian

AU - Wildman, Ricky

AU - Hague, Richard

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N2 - Selective laser melting (SLM) enables the utilization of complicated lattice structures in metallic components. To exploit this capability, it is important to understand the structural properties of these lattices. Topological variations in lattices are diverse, however, only a few are suitable for SLM since some lattices require supports during manufacture while others self-support. Diﬃculties associated with the removal of these supports and their detrimental eﬀects on surface ﬁnish makes the latter group better suited for SLM. In this work, we investigate the structural properties of some self-supporting unit cells via a ﬁnite element study and show that the performance of a lattice structure is largely dependent on the topology of the unit cell. Variants of the gyroid and face centred cubic unit cells performed better than body centred cubic cells. This was also observed when lattices, made of repeating unit cells were compared.

AB - Selective laser melting (SLM) enables the utilization of complicated lattice structures in metallic components. To exploit this capability, it is important to understand the structural properties of these lattices. Topological variations in lattices are diverse, however, only a few are suitable for SLM since some lattices require supports during manufacture while others self-support. Diﬃculties associated with the removal of these supports and their detrimental eﬀects on surface ﬁnish makes the latter group better suited for SLM. In this work, we investigate the structural properties of some self-supporting unit cells via a ﬁnite element study and show that the performance of a lattice structure is largely dependent on the topology of the unit cell. Variants of the gyroid and face centred cubic unit cells performed better than body centred cubic cells. This was also observed when lattices, made of repeating unit cells were compared.

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Access to Document

https://sffsymposium.engr.utexas.edu/sites/default/files/2014-097-Aremu.pdf