Compressive behavior of age hardenable tetrahedral lattice truss structures made from aluminium
By G. Kooistra, V. Deshpande, H. Wadley. Acta Materialia, 2004
369 citations recorded by the source corpus.
Abstract Open cell, lattice truss structures have been made by folding perforated 6061 aluminium alloy sheets. Simple air brazing is used to construct sandwich panels with cellular core relative densities between 0.02 and 0.08. Some panels were quenched and aged while others were tested in an annealed condition. The measured peak compressive strengths varied from 0.7 to 20 MPa, increasing with core relative density and parent alloy yield strength. The peak strength of the annealed lattice significantly exceeds ideal-plastic predictions. A model based on inelastic column theory incorporating strain hardening was able to predict the lattice truss core's compressive peak strength capacity in both the annealed and age hardened conditions, for all relative densities tested. Comparisons with compressive strength data for other cellular metals indicate that wrought aluminium alloy tetrahedral lattice structures outperform aluminium foams and prismatic corrugations, and compare favorably with honeycombs when the strain hardening of the parent alloy is high. Their impact energy absorption can be similarly tuned and competes well with other concepts under high intensity loading conditions.
Subfields: Civil and Structural Engineering, Mechanical Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/cf44cb312aea4cf22aa3296af18ebb3c2ec238ae
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Citations in the corpus
- An investigation into the compressive properties of stainless steel micro-lattice structures (2011, neutral): “[1–23] Deshpande et al.”
- A review of the recent trends on core structures and impact response of sandwich panels (2021, background): “Some core designs of lattice truss core (Reproduced with permission from Elsevier).(179)”
- Plastic Deformation, Failure and Energy Absorption of Sandwich Structures with Metallic Cellular Cores (2010, background): “Wadley and co-workers [71–73] conducted transverse compression tests on sandwich plates with either solid or hollow aluminium alloy lattice trusses, as shown in Figure 6(a).”
- Multifunctional periodic cellular metals (2006, methodology): “A (2006) Wang et al. 2003), square (Kooistra et al. 2004; Rathbun et al. 2004), rectangular, I-beam, or hollow (Queheillalt & Wadley 2005a,b).”
- Metallic microlattice materials: a current state of the art on manufacturing, mechanical properties and applications (2016, neutral): “[16] and Queheillalt and Wadley [19,35].”
- The fracture toughness of octet-truss lattices (2017, methodology): “A method to design high specific (density scaled) mechanical properties is through the strategic arrangement of trusses in a periodic array, thus creating a cellular material (Gibson and Ashby, 1997; Wadley, 2006; Kooistra et al., 2004; Ashby, 2011).”
- Design and Optimization of Lattice Structures: A Review (2020, methodology): “Besides, stretching net folding method and punched hole mesh drawing method are proposed by Kooistra [123,124].”
- Lattice truss structures from expanded metal sheet (2007, methodology): “During compressive loading of the expanded lattice trusses the stress–strain response is similar to that of other annealed lattice structures [3,4].”