Early plastic deformation behaviour and energy absorption in porous β-type biomedical titanium produced by selective laser melting

Y. J. Liu, S. J. Li, L. C. Zhang, Y. L. Hao, T. B. Sercombe

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Energy absorption is a critical consideration in the design of porous structures design. This work studied the energy absorption mechanism of three porous structures (i.e. cubic, topology optimised and rhombic dodecahedron) at the early stage of deformation. Stress distribution results, obtained by finite element modelling, coupled with the investigation of the slip bands generated have been used to reveal the plasticity mechanism and local stress concentrations for each structure. The topology optimised structure exhibits the best balance of bending and buckling stress with a high elastic energy absorption, a low Young's modulus (~2.3 GPa) and a high compressive strength (~58 MPa).

Original languageEnglish
Pages (from-to)99-103
Number of pages5
JournalScripta Materialia
Volume153
DOIs
Publication statusPublished - 1 Aug 2018

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energy absorption
Energy absorption
Titanium
plastic deformation
Plastic deformation
Melting
titanium
melting
Lasers
Stress concentration
topology
Topology
lasers
stress concentration
compressive strength
edge dislocations
buckling
plastic properties
stress distribution
Compressive strength

Cite this

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abstract = "Energy absorption is a critical consideration in the design of porous structures design. This work studied the energy absorption mechanism of three porous structures (i.e. cubic, topology optimised and rhombic dodecahedron) at the early stage of deformation. Stress distribution results, obtained by finite element modelling, coupled with the investigation of the slip bands generated have been used to reveal the plasticity mechanism and local stress concentrations for each structure. The topology optimised structure exhibits the best balance of bending and buckling stress with a high elastic energy absorption, a low Young's modulus (~2.3 GPa) and a high compressive strength (~58 MPa).",
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Early plastic deformation behaviour and energy absorption in porous β-type biomedical titanium produced by selective laser melting. / Liu, Y. J.; Li, S. J.; Zhang, L. C.; Hao, Y. L.; Sercombe, T. B.

In: Scripta Materialia, Vol. 153, 01.08.2018, p. 99-103.

Research output: Contribution to journalArticle

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T1 - Early plastic deformation behaviour and energy absorption in porous β-type biomedical titanium produced by selective laser melting

AU - Liu, Y. J.

AU - Li, S. J.

AU - Zhang, L. C.

AU - Hao, Y. L.

AU - Sercombe, T. B.

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KW - Local stress concentrations

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