Energy absorption in lattice structures in dynamics: Experiments
By Z. Ozdemir, E. Hernández-Nava, A. Tyas, A. James, Warren, S. Fay, Russell Goodall, Iain Todd, H. Askes. 2016
291 citations recorded by the source corpus.
Lattice structures offer the potential to relatively easily engineer specific (meso-scale properties (cell level)), to produce desirable macro-scale material properties for a wide variety of engineering applications including wave filters, blast and impact protection systems, thermal insulation, structural aircraft and vehicle components, and body implants. The work presented here focuses on characterising the quasi-static and, in particular, the dynamic load-deformation behaviour of lattice samples. First, cubic, diamond and re-entrant cube lattice structures were tested under quasi-static conditions to investigate failure process and stress–strain response of such materials. Following the quasi-static tests, Hopkinson pressure bar (HPB) tests were carried out to evaluate the impact response of these materials under high deformation rates. The HPB tests show that the lattice structures are able to spread impact loading in time and to reduce the peak impact stress. A significant rate dependency of load-deformation characteristics was identified. This is believed to be the first published results of experimental load-deformation studies of additively manufactured lattice structures. The cubic and diamond lattices are, by a small margin, the most effective of those lattices investigated to achieve this.
Subfields: Civil and Structural Engineering, Materials Chemistry, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/7740154ce4ee0dbf0428b1df7e669bffd08c80c5
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Citations in the corpus
- Design and Optimization of Lattice Structures: A Review (2020, background): “Energy absorbers [1,2,40–42], Heaters and heat exchangers [23,27,43–46], Engine hood [47], Biomedical implants [48–55], Wings [56], Gas turbine engine fan blades [57], Vibration absorber [58–61], Robotic system [62], Spacecraft and aircraft structures (i.e., fuselage, rib) [63–65].”
- Data for: Optimizing Process Parameters of Fused Deposition Modeling by Taguchi Method for the Fabrication of Lattice Structures (2018, unknown): “Due to these excellent characteristics, lattice structures have been extensively implemented in engineering applications, including ultralight structures [5, 6], energy absorbers[7], low thermal expansion structures [8], and conformal cooling [9].”