| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Swadener, John G.
Aston University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2022Experimental testing of fracture fixation plates – A reviewcitations
- 2013Direct measurement of coherency limits for strain relaxation in heteroepitaxial core/shell nanowirescitations
- 2010Crystal orientation effects in scratch testing with a spherical indentercitations
- 2009Oxygen effects on irradiated tantalum alloyscitations
- 2009A micro-compression study of shape-memory deformation in U-13 at.% Nbcitations
- 2009Effect of microstructure upon elastic behaviour of human tooth enamelcitations
- 2008Characterization of oxide layers grown on D9 austenitic stainless steel in lead bismuth eutecticcitations
- 2008An exploratory study to determine applicability of nano-hardness and micro-compression measurements for yield stress estimationcitations
- 2008Influence of impact angles on penetration rates of CRAs exposed to a high velocity multiphase flow
- 2007Anomalies in stiffness and damping of a 2D discrete viscoelastic system due to negative stiffness componentscitations
- 2006Nanoindentation measurement of surface residual stresses in particle-reinforced metal matrix compositescitations
- 2006Mechanical properties and the evolution of matrix molecules in PTFE upon irradiation with MeV alpha particlescitations
- 2006Study on fatigue and energy-dissipation properties of nanolayered Cu/Nb thin filmscitations
- 2005Thermal stability of sputter-deposited 330 austenitic stainless-steel thin films with nanoscale growth twinscitations
- 2004Heavy ion irradiation effects in zirconium nitride
- 2003Increasing the fracture toughness of silicon by ion implantationcitations
- 2002Deformation microstructure under nanoindentations in Cu using 3D x-ray structural microscopycitations
- 2002Shear induced toughening in bonded jointscitations
- 2001Measurement of residual stress by load and depth sensing indentation with spherical indenterscitations
- 2000Experimental and simulated grain boundary groove profiles in tungstencitations
Places of action
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article
Anomalies in stiffness and damping of a 2D discrete viscoelastic system due to negative stiffness components
Abstract
The recent development of using negative stiffness inclusions to achieve extreme overall stiffness and mechanical damping of composite materials reveals a new avenue for constructing high performance materials. One of the negative stiffness sources can be obtained from phase transforming materials in the vicinity of their phase transition, as suggested by the Landau theory. To understand the underlying mechanism from a microscopic viewpoint, we theoretically analyze a 2D, nested triangular lattice cell with pre-chosen elements containing negative stiffness to demonstrate anomalies in overall stiffness and damping. Combining with current knowledge from continuum models, based on the composite theory, such as the Voigt, Reuss, and Hashin-Shtrikman model, we further explore the stability of the system with Lyapunov's indirect stability theorem. The evolution of the microstructure in terms of the discrete system is discussed. A potential application of the results presented here is to develop special thin films with unusual in-plane mechanical properties.