On the mechanical properties of hierarchical lattices
Article
Article Title | On the mechanical properties of hierarchical lattices |
---|---|
ERA Journal ID | 4980 |
Article Category | Article |
Authors | |
Author | Banerjee, Sourish |
Journal Title | Mechanics of Materials |
Journal Citation | 72, pp. 19-32 |
Number of Pages | 14 |
Year | 2014 |
Place of Publication | Netherlands |
ISSN | 0167-6636 |
1872-7743 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.mechmat.2014.01.009 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0167663614000209 |
Abstract | Hierarchical lattices are made of finer lattices in successive smaller scales. This paper analytically studies the effect of hierarchy on the stiffness and strength of self-similar and hybrid type lattices, made by combining two distinct variants of topologies, governed by the bending and stretching dominated architectures. Scaling argument and physical reasoning are used to explain the behaviour of these lattices. The results show that the in-plane stiffness and the elastic buckling strength of the bending-bending lattices progressively improve with hierarchy; in contrast, only the buckling strength improves substantially for the stretching-stretching lattices, while the stiffness decreases. Low density bending-stretching lattices are unique with a significant improvement in stiffness, buckling, plastic collapse or crushing strength with hierarchy, whereas the stretching-bending lattices exhibit flexibility with lower strength. Despite no gain in stiffness, substantial gain in out-of-plane compressive strength is obtained with hierarchy because of the enhanced elastic and plastic buckling strength. Thus the advantage of combining lattices at multiple length scales provides a wide spectrum of choices for tailoring the properties for target applications including high performance core material, energy absorption or packaging. |
Keywords | hierarchy; multiscale; cellular; lattice; stiffness; strength |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401699. Materials engineering not elsewhere classified |
490407. Mathematical logic, set theory, lattices and universal algebra | |
401707. Solid mechanics | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre of Excellence in Engineered Fibre Composites |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q25w1/on-the-mechanical-properties-of-hierarchical-lattices
1729
total views10
total downloads1
views this month0
downloads this month