[PDF] Top 20 Effect of Sample Size on the Behavior of Granular Materials

... controlling the level of water on both sides of the inner HDPE ...At the end of the filling phase, the cell pres- sure ␴ c is gradually increased up to 100 kPa by ... Voir le document complet

... 4.1 Sample size All samples used to investigate the effect of sample size had the same thickness and were not sealed at any ...shows the moisture content ... Voir le document complet

... control of the ratio λ that compares the particle size to the thickness of the struts in the foam structure, we evidence a transition in the mechanical ... Voir le document complet

... From the results of this study, one can suggest a procedure for modeling very coarse granular materials for which experimental behavior is not accessible because of the ... Voir le document complet

... between the coordina- tion number Z and reduced particle size d r . In the analysis of the connectivity and coordination only the force-bearing contacts are ...considered. ... Voir le document complet

... description of GSD evolution The implicit description of the GSD suffers from some ...requires the choice of a specific form F(d) for the ...about the hardness ... Voir le document complet

... of the deviatoric stress throughout the entire ...from the role of the small size particles in increasing the contractiveness of the sample for ... Voir le document complet

... for the spacing between DWs (or GNBs) and can also be considered as the cell ...in the 200-1200 nm range for IF steels while according to Korzekwa et ...in the 400-700 nm range for DP ...that ... Voir le document complet

... consider the Material Point Method (MPM) and CD method, both recently implemented and applied to small assemblies of particles ...aggregate of primary rigid parti- cles with appropriate long-range ... Voir le document complet

... packings of nonconvex aggregates were simulated and analyzed in this work with the aim of quantifying the effect of nonconvex particle shape on the behavior ... Voir le document complet

... symmetry, the pentagons are less prone to local ordering than hexagons and squares, which may spontaneously organize into locally ordered ...structures. The size of a pentagonal particle is ... Voir le document complet

... INTRODUCTION The 3D reconstruction of microstructures by microtomography is based on X-ray radiography (Buffiere et ...rotations of a specimen, and with an appropriate algorithm, 3D images of ... Voir le document complet

... good sample is a point set such that any ball of radius  contains a constant number of ...points. The Delaunay triangulation of a good sample is proved to have linear ... Voir le document complet

... moving the piston, the force can be easily changed and adjusted to the chosen ...Besides, the piston can be moved backward far from the first bead in order to have the ... Voir le document complet

... for the deposit and dissemination of sci- entific research documents, whether they are pub- lished or ...not. The documents may come from teaching and research institutions in France or abroad, or ... Voir le document complet

... at the peak state and in the sheared state as a function of ...η. effect of local adhesion is amplified by nonconvex particle shape to enhance the macroscopic ...Surprisingly, ... Voir le document complet

... interpretation of the observations of no large-scale segregation and only local small-scale reorganisation in natural geophysical granular flows is that the flow time scale resulting ... Voir le document complet

... with the packing fraction and loading parameters and can be obtained by independent ...for the prediction of settlement in coarse granular materials under cyclic ...forcing. The ... Voir le document complet

... By construction, the mean-field model leads to uniform stress in W layers, whereas stress heterogeneity is evidenced in the full-field approach; it comes from the heterogeneous deformati[r] ... Voir le document complet

... because of many losses through increasing temperature, mechanical and electric losses, ...described the many phenomena occurring during grinding operations. In the case of fine or ultra-fine ... Voir le document complet