Ti–6Al–4V truss lattices with a composite topology of double-simple-cubic and body-centered-cubic

Wrought Ti alloy truss with a united double-simple-cubic plus body-centered-cubic topology, i.e., SC(dbl.)-BCC, were created via a snap-fit route. Lattice structures of 4.8–23.3% relative densities were fabricated and their quasi-static compressive responses were mechanically investigated at room te...

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Bibliographic Details
Published in:European journal of mechanics, A, Solids A, Solids, 2022-03, Vol.92, p.104486, Article 104486
Main Authors: Dong, Liang, Zhang, Shukai, Yu, Kaihong
Format: Article
Language:English
Subjects:
Body centered cubic lattice
Body-centered-cubic
Business competition
Composite topology
Compressive strength
Double-simple-cubic
Edge effect
Mathematical models
Micromechanics
Room temperature
Titanium alloy
Titanium base alloys
Topology
Trusses
Unit cell
Young's modulus
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Summary:Wrought Ti alloy truss with a united double-simple-cubic plus body-centered-cubic topology, i.e., SC(dbl.)-BCC, were created via a snap-fit route. Lattice structures of 4.8–23.3% relative densities were fabricated and their quasi-static compressive responses were mechanically investigated at room temperature. Micromechanics models for snap-fit unit cell structures' attributes were obtained based upon a rule of mixture model, and agreed well with both the measurements and numerical simulations, for which edge effect of multi-cells' structure was removed. The manufactured snap-fit trusses are competitive with the octet-truss counterparts in properties under compressive loading, and are suitable to serve lightweight load bearing applications. [Display omitted] •A united double-simple-cubic and body-centered-cubic truss topology was adopted to make snap-fit cellular metals.•Micromechanics models were developed to predict mechanical performance of snap-fit SC(dbl.)-BCC trusses.•Ti–6Al–4V SC(dbl.)-BCC trusses show decent properties competitive to many existing cellular materials.
ISSN:0997-7538
1873-7285
DOI:10.1016/j.euromechsol.2021.104486