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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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Mylonakis, George
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024Similarity based nonlinear settlement predictions of circular surface footings on clay
- 2023"p-y" curves for piles in radially inhomogeneous soil
- 2022A simplified analytical model for developing “t-z” curves for axially loaded piles
- 2022Axial shear friction of polypropylene pipes against granular beds
- 2021Relationship between texture of polypropylene coatings and interface friction for sand at low stress levelscitations
- 2021Relationship between texture of polypropylene coatings and interface friction for sand at low stress levelscitations
- 2021Effects of Soil-Wall Separation on Static Earth Pressures
- 2019Cyclic polypropylene pipeline coating interface strength with granular materials at low stress
- 2019Cyclic polypropylene pipeline coating interface strength with granular materials at low stress
- 2019An analytical continuum model for axially loaded end-bearing piles in inhomogeneous soilcitations
- 2018Strain and strain rate effects on the rocking response of footing subjected to machine vibrations
- 2017Approximate solution for seismic earth pressures on rigid walls retaining inhomogeneous elastic soilcitations
- 2016Soil reaction to lateral harmonic pile motioncitations
- 2015Characterisation of shear wave velocity profiles of non-uniform bi-layer soil deposits:Analytical evaluation and experimental validationcitations
- 2015Characterisation of shear wave velocity profiles of non-uniform bi-layer soil depositscitations
- 2015Torsional vibrations of a column of fine-grained materialcitations
- 20131D harmonic response of layered inhomogeneous soilcitations
- 2011Wave dispersion studies in dry granular materials by the distinct element method
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document
Wave dispersion studies in dry granular materials by the distinct element method
Abstract
Wave dispersion in resonant column tests on dry granular soil is explored. Numerical investigations in two and three-dimensional Distinct Element (D.E.) elastodynamic analyses are reported, implemented by means of the commercial computer platforms PFC2D and PFC3D. The investigations focus on the effect of dimensionless sample width, H/B, dimensionless grain size d/B and wavelength, d/l, on propagation velocities of longitudinal waves in the samples. It is shown that granular materials may exhibit anomalous dispersion that is, wave velocities that increase with increasing frequency over certain frequency ranges. This increase may exceed 10% for squatty samples, but becomes less pronounced for slender samples. Similar fi ndings have been reported in experimental NDT studies of concrete materials and a number of experiments on granular materials, but have not been systematically explored by numerical means. Results are presented in the form of dimensionless graphs and charts that provide insight into the physics of the problem.