Stochastic heterogeneous material modeling for wave propagation in a ballast layer
| Autor: | de Abreu Corrêa Lúcio, Cottereau Régis, Voivret Charles, Costa D’Aguiar Sofia, Bongini Estelle, Faure Baldrick |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | EPJ Web of Conferences, Vol 140, p 11012 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2100-014X 79626122 |
| DOI: | 10.1051/epjconf/201714011012 |
| Popis: | This paper discusses the dynamical behavior of a randomly-fluctuating heterogeneous continuum model of the ballast. The Young’s modulus is modeled as a random field parameterized by its average, its variance and a correlation model. A numerical model of the ballast and the surrounding soil is then constructed based on an explicit spectral element solver. This model allows to describe numerically the wave field generated, as well as to construct dispersion curves for the ballast-soil model. The influence of heterogeneity is discussed by comparison with a similar model where the ballast is assumed homogeneous. |
| Databáze: | Directory of Open Access Journals |
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