Abstract
Classes of lattice material are reviewed, and their fracture response is explored in the context of the core of a sandwich panel. Attention is focussed on the strength of a sandwich plate with centre-cracked core made from an elastic-brittle square lattice. Predictions are summarised for the unnotched strength of the sandwiched core and for the fracture toughness of the lattice under remote tension, remote compression or remote shear. It is assumed that the lattice fails when the local stress in the cell walls attains the tensile or compressive strength of the solid, or when local buckling occurs. The local failure mechanism that dictates the unnotched strength may be different from that dictating the fracture toughness. Fracture mechanism maps are generated in order to reveal the dominant local failure mechanism for any given cell wall material.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Quintana-Alonso, I., Fleck, N.A.: The Damage Tolerance of a Sandwich Panel Containing a Cracked Honeycomb Core. Journal of Applied Mechanics (2007) (in press)
Quintana-Alonso, I., Fleck, N.A.: The Compressive Response of a Sandwich Panel with a Cracked Honeycomb Core. To appear in Journal of Mechanics and Physics of Solids (2008)
Wicks, N., Guest, S.D.: Single Member Actuation in Large Repetitive Truss Structures. International Journal of Solids and Structures 41(3-4), 965–978 (2004)
Timoshenko, S.P., Gere, J.M.: Theory of Elastic Stability, 2nd edn. McGraw-Hill, New York (1961)
Newmark, N.M.: A Simple Approximate Formula for Effective End-Fixity of Columns. Journal of the Aeronautical Sciences 16, 116 (1949)
Sih, G.C., Paris, P.C., Irwin, G.R.: On Cracks in Rectilinearly Anisotropic Bodies. International Journal of Fracture Mechanics 1(13), 189–203 (1965)
Gibson, L.J., Ashby, M.F.: Cellular Solids: Structure and Properties, 2nd edn. Pergamon Press, Oxford (1999)
Quintana Alonso, I., Fleck, N.A.: Damage Tolerance of an Elastic-Brittle Diamond-Celled Honeycomb. Scripta Materialia 56(8), 693–696 (2007)
Romijn, N.E.R., Fleck, N.A.: The Fracture Toughness of Planar Lattices: Imperfection Sensitivity. Journal of Mechanics and Physics of Solids 55(12), 2538–2564 (2007)
EduPack, C.E.S.: The Cambridge Engineering Selector, Granta Design, Rustat House, 62 Clifton Road, Cambridge CB1 7EG, UK (2007)
Huang, J.S., Lin, J.Y.: Fatigue of Cellular Materials. Acta Mater. 44(1), 289–296 (1996)
Olurin, O.B., McCullough, K.Y.G., Fleck, N.A., Ashby, M.F.: Fatigue Crack Propagation in Aluminium Alloy Foams. Int. J. Fatigue 23(5), 375–382 (2001)
Burman, M., Zenkert, D.: Fatigue of Foam Core Sandwich Beams. Int. J. Fatigue 19(7), 551–578 (1997)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 © Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Fleck, N.A. (2013). Micro-architectured Solids: From Blast Resistant Structures to Morphing Wings. In: Denier, J., Finn, M. (eds) Mechanics Down Under. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5968-8_4
Download citation
DOI: https://doi.org/10.1007/978-94-007-5968-8_4
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-5967-1
Online ISBN: 978-94-007-5968-8
eBook Packages: EngineeringEngineering (R0)