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Design and analysis of porous structure of titanium alloy deformed Gyroid unit
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Affiliation:

1.Wuhan University of Technology;2.Tongji Medical College,Huazhong University of Science Technology

Clc Number:

TB383

Fund Project:

The National Key R&D Program of China

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    Abstract:

    The porous structure of triply periodic minimal surfaces (TPMS) has been studied extensively, but the porous structure of deformed TPMS is less studied, and the porous structure of deformed TPMS has potential advantages in the mechanical properties in a certain direction. The parametric design method of the porous structure of the Gyroid cell is studied, and the normal and deformed porous titanium alloy samples of the Gyroid cell with the porosity of 60% and 75% are prepared by the selective laser melting molding technology (SLM). The morphological characteristics of the sample were observed by Micro-CT, and the internal connectivity was good, and no obvious structural fracture and pore blockage were found. The Instron electronic universal material testing machine was used to carry out the mechanical compression test. The results showed that the compressive strength of the porous structure of the deformed Gyroid unit with a porosity of 60% increased by 49.3% compared with the porous structure of the normal Gyroid unit, and the elastic modulus increased by 63.5%; When the porosity is 75%, the compressive strength increases by 40.5% and the elastic modulus increases by 70.5%. The research results show that under the same porosity, the deformed Gyroid unit structure of the long axis in the compression direction has better mechanical properties.

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[Shi Zhiliang, Gao Jie, Wang Wei, Xiao Jun, Qi Dahu. Design and analysis of porous structure of titanium alloy deformed Gyroid unit[J]. Rare Metal Materials and Engineering,2022,51(7):2631~2636.]
DOI:10.12442/j. issn.1002-185X.20210558

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History
  • Received:June 30,2021
  • Revised:August 24,2021
  • Adopted:August 25,2021
  • Online: July 29,2022
  • Published: July 27,2022