Stochastic heterogeneous material modeling for wave propagation in a ballast layer

Lúcio de Abreu Corrêa, Régis Cottereau, Charles Voivret, Sofia Costa D'Aguiar, Estelle Bongini, Baldrick Faure, F. Radjai, S. Nezamabadi, S. Luding, J.Y. Delenne
2017 EPJ Web of Conferences  
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
more » ... st-soil model. The influence of heterogeneity is discussed by comparison with a similar model where the ballast is assumed homogeneous.
doi:10.1051/epjconf/201714011012 fatcat:fbtmo46i3ba73j7qq7mzgn4acm