| 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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Pasternak, Elena
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Topics
Publications (15/15 displayed)
- 2023Implication of Different Types of Post-peak Behaviour in Lateral Direction on Failure of Class II Rocks in Uniaxial Compressioncitations
- 2022Possible mechanism of spallation in rock samples under uniaxial compressioncitations
- 2019Effective properties of layered auxetic hybridscitations
- 2017Behavior of Extreme Auxetic and Incompressible Elastic Materialscitations
- 2017Extracting real-crack properties from non-linear elastic behaviour of rockscitations
- 2017Transitional negative stiffness and numerical modelling of failure of particulate material
- 2017Extracting shear and normal compliances of crack-like defects from pressure dependences of elastic-wave velocitiescitations
- 2016Wave propagation in materials with negative Cosserat shear moduluscitations
- 2016Deformation analysis of reinforced-core auxetic assemblies by close-range photogrammetrycitations
- 2016Thermal stresses in hybrid materials with auxetic inclusionscitations
- 2015Negative Poisson's ratio in hollow sphere materialscitations
- 2015Hybrid materials with negative Poisson's ratio inclusionscitations
- 2007Percolation mechanism of failure of a planar assembly of interlocked osteomorphic elementscitations
- 2006Cracks of higher modes in Cosserat continuacitations
- 2004On the possibility of elastic strain localisation in a faultcitations
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article
Wave propagation in materials with negative Cosserat shear modulus
Abstract
© 2015 Elsevier Ltd. All rights reserved. Materials with negative elastic moduli are unstable, but can be stabilised by specific boundary conditions. In particulate materials under compression, rotating non-spherical particles produce the effect of negative Cosserat shear modulus. We consider wave propagation in such materials and demonstrate that when the sum of the negative Cosserat shear modulus and the conventional shear modulus is positive the waves can propagate. In the conventional isotropic Cosserat continuum the twist wave and one of the shear waves exist only at frequencies higher than a threshold. When the Cosserat shear modulus is negative all waves exist at all frequencies; observing the twist and shear waves one can detect and investigate the negative moduli.