CUED Publications database

Mechanical properties of hierarchical lattices

Vigliotti, A and Pasini, D (2013) Mechanical properties of hierarchical lattices. Mechanics of Materials, 62. pp. 32-43. ISSN 0167-6636

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Abstract

This paper focuses on the stiffness and strength of lattices with multiple hierarchical levels. We examine two-dimensional and three-dimensional lattices with up to three levels of structural hierarchy. At each level, the topology and the orientation of the lattice are prescribed, while the relative density is varied over a defined range. The properties of selected hierarchical lattices are obtained via a multiscale approach applied iteratively at each hierarchical level. The results help to quantify the effect that multiple orders of structural hierarchy produces on stretching and bending dominated lattices. Material charts for the macroscopic stiffness and strength illustrate how the property range of the lattices can expand as subsequent levels of hierarchy are added. The charts help to gain insight into the structural benefit that multiple hierarchies can impart to the macroscopic performance of a lattice. © 2013 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Lattice materials Material property charts Multiscale mechanics Periodic cellular materials Stiffness and strength properties
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Div C > Applied Mechanics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:28
Last Modified: 08 Dec 2014 02:12
DOI: 10.1016/j.mechmat.2013.03.003