Back to Search
Start Over
Mechanical behavior of Ti–6Al–4V lattice-walled tubes under uniaxial compression
- Source :
- Defence Technology. 18:1124-1138
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- The compression behavior of the lattice-walled tubes under variable strain rates are investigated by numerical simulation, and the stress-strain relationship of the structure under quasi-static loading is theoretically analyzed. The finite element software LS-DYNA is used to simulate the structure established by the beam element, and the critical impact velocity is obtained when the structure collapses layer by layer. According to the plastic hinge theory and considering the combined action of the beam's bending moment and axial force in the structure, the stress-strain relationship of the structure under quasi-static loading is derived and compared with the experimental results. The numerical simulation results reveal that the structure of the single-layer gradient tube(SGC) does not undergo shear deformation under quasi-static and low-speed impact. The critical speed of the gradient square tube(GS) is higher than that of a cylindrical tube. The theoretical model can correctly reflect the mechanical response of the structure under uniaxial compression.
- Subjects :
- 0209 industrial biotechnology
Materials science
Computer simulation
Mechanical Engineering
Metals and Alloys
Computational Mechanics
02 engineering and technology
Compression (physics)
01 natural sciences
010305 fluids & plasmas
020901 industrial engineering & automation
Critical speed
Lattice (order)
0103 physical sciences
Plastic hinge
Ceramics and Composites
Bending moment
Tube (container)
Composite material
Beam (structure)
Subjects
Details
- ISSN :
- 22149147
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- Defence Technology
- Accession number :
- edsair.doi...........1bd7f57328a76271a779f41fe84180aa