Modelling negative linear compressibility in tetragonal beam structures
Barnes, D.L.; Miller, W.; Evans, Kenneth E.; et al.Marmier, Arnaud
Date: 29 December 2011
Article
Journal
Mechanics of Materials
Publisher
Elsevier
Publisher DOI
Abstract
Most materials compress axially in all directions when loaded hydrostatically. Contrary to this, some materials have been discovered that exhibit negative linear compressibility and, as such, expand along a specific axis or plane. This paper analyses a fundamental mechanism by using a combination of finite element simulations and ...
Most materials compress axially in all directions when loaded hydrostatically. Contrary to this, some materials have been discovered that exhibit negative linear compressibility and, as such, expand along a specific axis or plane. This paper analyses a fundamental mechanism by using a combination of finite element simulations and analytical derivations to show that negative linear compressibility can be found in a body-centred or face-centred tetragonal network of nodes connected by a network of beams. The magnitude and direction of this behaviour depends on the cross geometry in the network.
Engineering
Faculty of Environment, Science and Economy
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