期刊
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
卷 173, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2020.105460
关键词
Warren-truss lattice; Elastic modulus; Strength; Titanium alloys
资金
- Hundred Abroad Talents Plan of Northeastern University, China [01270021920501x040]
- Liaoning Revitalization Talents Program, China [XLYC1807247]
- Fundamental Research Funds for the Central Universities, China [02060022119003]
Lattice structures with warren-truss topology were fabricated from sheet titanium alloy of a single 1.5 mm thickness using a snap-fit methodology and bonded metallurgically via vacuum brazing. Lattice structures having a relative density in the 3.3% to 15% range were manufactured via a strut length variation from 10 to 27 mm, and mechanically tested in compression. Micromechanical models were developed to predict the compressive properties, including elastic modulus and strength, of the snap-fit warren-truss lattices, and were shown to be in excellent agreements with experimental measurements and numerical predictions. The mechanical properties of Grade-5 titanium alloy warren-truss lattice structures are found to be superior to the octet-truss topology counterparts and other existing topologies and materials.
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